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Cheap flights from Dulles Intl (IAD) to Seattle (SEA) from $139

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
IAD — SEA
Jun 2 — Jun 91
From?
To?
Sun 6/2
Sun 6/9
1 adult, Economy
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The best prices from Washington, D.C. Dulles Intl to Seattle/Tacoma Intl are usually found in January or November, booked 34 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from Dulles Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 28, 2024.

Popular in

June

Cheapest in

January

Round-trip from

$247

One-way from

$152
High demand for flights, 19% potential price rise
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Best time to find cheap flights, 11% potential price drop
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From Washington, D.C. Dulles Intl to Seattle/Tacoma Intl
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One-way flight from Washington, D.C. Dulles Intl to Seattle/Tacoma Intl
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What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to Seattle?

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 22% on the overall cost on flights from Washington, D.C. Dulles Intl Airport to Seattle.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Seattle?

Users have found that booking a flight from Washington, D.C. Dulles Intl Airport to Seattle at least 53 days early can save you up to 60% on average compared to booking a flight this week. If booking 53 days before your flight isn’t an option for you, users have found flights from Washington, D.C. Dulles Intl Airport to Seattle for as little as $474 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $543 for flights departing within the next 3 days.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Seattle?

January is one of the best times of the year to fly to Seattle from Washington, D.C. Dulles Intl Airport. Prices for January average $406 per person but you can even find prices for as low as $139. The most expensive prices can be found in the month of June. Opting for a January flight can save you 29% on your journey compared to booking in June

When is the cheapest time to fly from Washington, D.C. Dulles Intl Airport to Seattle (IAD - SEA)?

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Seattle is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 44% on airfare.

Cheap Sun Country Air flights from Dulles Intl to Seattle

Explore cheap flight options specifically provided by Sun Country Air for the route between Dulles Intl and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,740,132 searches. Data last updated May 28, 2024.
Check out some of the cheapest Sun Country Air flights we've come across from Washington, D.C. to Seattle. Come back soon if you're not finding the exact deal you're looking for.
Tue 7/912:00 pmIAD - SEA
1 stop7h 59mSun Country Air
Fri 7/1211:59 pmSEA - IAD
1 stop9h 11mSun Country Air
Deal found 5/28$295
Tue 7/25:50 pmIAD - SEA
1 stop17h 12mSun Country Air
Tue 7/236:07 pmSEA - IAD
1 stop13h 23mSun Country Air
Deal found 5/28$299
Tue 7/25:50 pmIAD - SEA
1 stop17h 12mSun Country Air
Fri 7/266:00 pmSEA - IAD
1 stop13h 17mSun Country Air
Deal found 5/28$305
Tue 7/912:00 pmIAD - SEA
1 stop7h 59mSun Country Air
Tue 7/167:10 pmSEA - IAD
1 stop12h 20mSun Country Air
Deal found 5/28$309
Tue 6/1111:30 amIAD - SEA
1 stop7h 45mSun Country Air
Thu 6/1311:59 pmSEA - IAD
1 stop9h 58mSun Country Air
Deal found 5/28$315
Fri 7/128:00 pmIAD - SEA
1 stop15h 46mSun Country Air
Wed 7/245:14 pmSEA - IAD
1 stop15h 03mSun Country Air
Deal found 5/27$319
Tue 6/1111:30 amIAD - SEA
1 stop7h 45mSun Country Air
Mon 6/176:02 pmSEA - IAD
1 stop13h 55mSun Country Air
Deal found 5/27$324
Wed 6/1211:16 amIAD - SEA
1 stop8h 26mSun Country Air
Mon 6/2411:59 pmSEA - IAD
1 stop7h 31mSun Country Air
Deal found 5/27$325
Wed 6/511:20 amIAD - SEA
1 stop7h 47mSun Country Air
Wed 6/125:50 pmSEA - IAD
1 stop14h 56mSun Country Air
Deal found 5/27$330

  • Sun Country Air is one of the most popular airlines used for those traveling from Washington, D.C. Dulles Intl Airport to Seattle. Flights on this route from Sun Country Air typically cost $376.81 RT, a price that is 78% more expensive than the average Washington, D.C. Dulles Intl Airport to Seattle flight. The cheapest flight found was $139 RT. The most popular departure airport in Washington, D.C. Dulles Intl Airport when flying to Seattle is Washington, D.C. Dulles Intl Airport. The most popular airport to fly into when visiting Seattle is Seattle/Tacoma Intl Airport. When flying from Washington, D.C. Dulles Intl Airport to Seattle, Sun Country Air flights are 10% more popular than any other airline flying that same route.

Cheap Alaska Airlines flights from Dulles Intl to Seattle

Explore cheap flight options specifically provided by Alaska Airlines for the route between Dulles Intl and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,740,132 searches. Data last updated May 28, 2024.
Browse through some of the cheapest Alaska Airlines flights traveling from Washington, D.C. to Seattle. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Sat 9/74:16 pmIAD - SEA
1 stop10h 26mAlaska Airlines
Tue 9/174:06 pmSEA - IAD
Nonstop4h 53mAlaska Airlines
Deal found 5/27$286
Fri 9/64:16 pmIAD - SEA
1 stop10h 26mAlaska Airlines
Tue 9/174:06 pmSEA - IAD
Nonstop4h 53mAlaska Airlines
Deal found 5/27$292
Thu 7/44:16 pmIAD - SEA
1 stop10h 28mAlaska Airlines
Wed 7/2411:43 pmSEA - IAD
Nonstop4h 52mAlaska Airlines
Deal found 5/28$298
Sat 9/144:16 pmIAD - SEA
1 stop10h 26mAlaska Airlines
Thu 9/194:06 pmSEA - IAD
Nonstop4h 53mAlaska Airlines
Deal found 5/27$326
Thu 7/44:16 pmIAD - SEA
1 stop10h 28mAlaska Airlines
Tue 7/2311:43 pmSEA - IAD
Nonstop4h 52mAlaska Airlines
Deal found 5/28$332
Wed 9/114:16 pmIAD - SEA
1 stop10h 26mAlaska Airlines
Wed 9/189:15 pmSEA - IAD
1 stop16h 18mAlaska Airlines
Deal found 5/27$339
Tue 7/96:37 pmIAD - SEA
Nonstop5h 53mAlaska Airlines
Wed 7/2411:43 pmSEA - IAD
Nonstop4h 52mAlaska Airlines
Deal found 5/28$353
Mon 6/107:00 amIAD - SEA
Nonstop5h 30mAlaska Airlines
Mon 6/1711:38 pmSEA - IAD
Nonstop4h 52mAlaska Airlines
Deal found 5/27$374
Wed 8/214:13 pmIAD - SEA
Nonstop5h 46mAlaska Airlines
Tue 8/279:00 amSEA - IAD
1 stop28h 33mAlaska Airlines
Deal found 5/27$379

  • Alaska Airlines is one of the most popular airlines used for those traveling from Washington, D.C. Dulles Intl Airport to Seattle. Flights on this route from Alaska Airlines typically cost $378.38 RT, a price that is 76% cheaper than the average Washington, D.C. Dulles Intl Airport to Seattle flight. The cheapest flight found was $145 RT. Washington, D.C. Dulles Intl Airport is the most common Washington, D.C. Dulles Intl Airport airport to take off from when flying to Seattle. Seattle/Tacoma Intl Airport is the most popular arrival airport in Seattle. When flying from Washington, D.C. Dulles Intl Airport to Seattle, Alaska Airlines flights are 10% more popular than any other airline flying that same route.

Cheap Dulles Intl to Seattle flights in May & June 2024

Find cheap flight options from Dulles Intl to Seattle specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,740,132 searches. Prices were last updated on May 28, 2024.
The lowest fares we've come across on flights traveling from Washington, D.C. to Seattle in May and June 2024. For more flight deals, be sure to check back very soon.
Mon 6/1710:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Tue 6/1811:59 pmSEA - IAD
1 stop6h 56mUnited Airlines
Deal found 5/27$293
Tue 6/1111:30 amIAD - SEA
1 stop7h 45mSun Country Air
Wed 6/125:50 pmSEA - IAD
1 stop14h 56mSun Country Air
Deal found 5/28$295
Sat 6/2210:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Tue 7/210:30 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 5/27$297
Mon 6/1710:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Tue 6/1811:29 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 5/27$298
Sun 6/168:00 amIAD - SEA
1 stop17h 54mSun Country Air
Tue 7/167:10 pmSEA - IAD
1 stop12h 20mSun Country Air
Deal found 5/27$299
Mon 6/1010:50 amIAD - SEA
2 stops25h 09mMultiple Airlines
Fri 6/145:55 pmSEA - IAD
1 stop16h 02mMultiple Airlines
Deal found 5/28$302
Tue 6/1111:30 amIAD - SEA
1 stop7h 45mSun Country Air
Fri 6/1411:59 pmSEA - IAD
1 stop9h 58mSun Country Air
Deal found 5/28$305
Tue 6/2510:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Tue 7/211:20 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 5/28$307
Wed 6/1211:16 amIAD - SEA
1 stop8h 26mSun Country Air
Fri 6/1411:59 pmSEA - IAD
1 stop9h 58mSun Country Air
Deal found 5/26$309

Dulles Intl to Seattle 2024 flight deals

Discover exclusive flight deals for travel between Dulles Intl and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,740,132 searches. Data last updated May 28, 2024.
The lowest fares we've come across on flights traveling from Washington, D.C. to Seattle in May and June 2024. For more flight deals, be sure to check back very soon.
Tue 8/205:36 pmIAD - SEA
Nonstop6h 03mDelta
Tue 8/279:59 pmSEA - IAD
Nonstop4h 57mDelta
Deal found 5/28$277
Mon 8/197:30 amIAD - SEA
Nonstop5h 47mDelta
Wed 8/289:59 pmSEA - IAD
Nonstop4h 57mDelta
Deal found 5/28$283
Sat 9/74:16 pmIAD - SEA
1 stop10h 26mAlaska Airlines
Tue 9/174:06 pmSEA - IAD
Nonstop4h 53mAlaska Airlines
Deal found 5/27$286
Tue 8/205:26 pmIAD - SEA
Nonstop5h 48mUnited Airlines
Wed 8/288:53 amSEA - IAD
1 stop6h 53mUnited Airlines
Deal found 5/28$287
Fri 8/165:36 pmIAD - SEA
Nonstop6h 03mDelta
Mon 8/269:59 pmSEA - IAD
Nonstop4h 57mDelta
Deal found 5/28$289
Fri 9/64:16 pmIAD - SEA
1 stop10h 26mAlaska Airlines
Tue 9/174:06 pmSEA - IAD
Nonstop4h 53mAlaska Airlines
Deal found 5/27$292
Tue 8/1310:10 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Tue 8/208:53 amSEA - IAD
1 stop6h 53mUnited Airlines
Deal found 5/27$293
Fri 7/128:00 pmIAD - SEA
1 stop15h 46mMultiple Airlines
Wed 7/245:10 amSEA - IAD
2 stops32h 10mMultiple Airlines
Deal found 5/27$294
Tue 7/912:00 pmIAD - SEA
1 stop7h 59mSun Country Air
Fri 7/1211:59 pmSEA - IAD
1 stop9h 11mSun Country Air
Deal found 5/28$295

Non-stop flights to Seattle from Dulles Intl

Discover non-stop flight options from Dulles Intl to Seattle. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,740,132 searches. Data last updated May 28, 2024.
Consider booking one of these non-stop flights heading from Washington, D.C. to Seattle. Those looking to potentially save on 1 or 2-stop flights from Washington, D.C. to Seattle should utilize the search form at the the top of the page.
Tue 8/205:36 pmIAD - SEA
Nonstop6h 03mDelta
Wed 8/289:59 pmSEA - IAD
Nonstop4h 57mDelta
Deal found 5/28$277
Mon 8/197:30 amIAD - SEA
Nonstop5h 47mDelta
Wed 8/289:59 pmSEA - IAD
Nonstop4h 57mDelta
Deal found 5/28$283
Fri 8/165:36 pmIAD - SEA
Nonstop6h 03mDelta
Mon 8/269:59 pmSEA - IAD
Nonstop4h 57mDelta
Deal found 5/28$289
Tue 6/1810:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Wed 6/1911:29 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 5/27$293
Sat 6/2210:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Tue 7/210:30 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 5/27$297
Mon 6/1710:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Tue 6/1811:29 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 5/27$298
Sat 8/1010:10 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Wed 8/2110:50 pmSEA - IAD
Nonstop5h 05mUnited Airlines
Deal found 5/27$301
Fri 8/238:55 amIAD - SEA
Nonstop5h 48mUnited Airlines
Sat 8/3110:50 pmSEA - IAD
Nonstop5h 05mUnited Airlines
Deal found 5/28$303
Tue 6/2510:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Tue 7/211:20 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 5/28$307

Dulles Intl to Seattle flights leaving soon

Find last-minute flight options from Dulles Intl to Seattle for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,740,132 searches. Data last updated May 28, 2024.
Check out these flights departing soon from Washington, D.C. to Seattle. It's wise to confirm all flight details are correct before booking.
Wed 6/511:20 amIAD - SEA
1 stop23h 42mSun Country Air
Wed 6/125:50 pmSEA - IAD
1 stop14h 56mSun Country Air
Deal found 5/28$295
Wed 6/511:20 amIAD - SEA
1 stop23h 42mSun Country Air
Wed 6/265:43 pmSEA - IAD
1 stop14h 37mSun Country Air
Deal found 5/27$315
Wed 6/511:20 amIAD - SEA
2 stops24h 12mMultiple Airlines
Wed 6/125:50 pmSEA - IAD
1 stop14h 56mMultiple Airlines
Deal found 5/27$324
Wed 6/511:20 amIAD - SEA
1 stop7h 47mSun Country Air
Wed 6/125:50 pmSEA - IAD
1 stop14h 56mSun Country Air
Deal found 5/27$330
Thu 6/612:03 pmIAD - SEA
1 stop23h 05mSun Country Air
Mon 6/106:15 pmSEA - IAD
1 stop13h 22mSun Country Air
Deal found 5/28$335
Mon 6/35:25 pmIAD - SEA
1 stop20h 15mSun Country Air
Mon 6/106:15 pmSEA - IAD
1 stop13h 22mSun Country Air
Deal found 5/27$340
Thu 6/612:03 pmIAD - SEA
2 stops23h 29mMultiple Airlines
Wed 6/125:50 pmSEA - IAD
1 stop14h 56mMultiple Airlines
Deal found 5/28$343
Wed 6/511:20 amIAD - SEA
2 stops24h 12mMultiple Airlines
Wed 6/265:43 pmSEA - IAD
1 stop14h 37mMultiple Airlines
Deal found 5/27$346
Wed 6/511:20 amIAD - SEA
2 stops24h 12mMultiple Airlines
Wed 6/269:28 amSEA - IAD
2 stops22h 52mMultiple Airlines
Deal found 5/27$347

One-way flights to Seattle from Dulles Intl

Search for one-way flight options from Dulles Intl to Seattle. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,740,132 searches. Data last updated May 28, 2024.
Users in need of a one-way flight from Washington, D.C. to Seattle can choose from these deals. Those seeking round-trip flights from Washington, D.C. to Seattle should utilize the search form at the the top of the page.
Tue 9/37:09 pmIAD - SEA
Nonstop5h 51mAlaska Airlines
Deal found 5/28$139
Mon 6/1010:50 amIAD - SEA
2 stops25h 09mMultiple Airlines
Deal found 5/28$140
Mon 7/1511:33 amIAD - SEA
1 stop14h 20mSun Country Air
Deal found 5/27$145
Tue 9/31:17 pmIAD - SEA
1 stop9h 22mAmerican Airlines
Deal found 5/27$147
Tue 9/245:22 pmIAD - SEA
1 stop8h 39mAmerican Airlines
Deal found 5/27$148
Thu 9/1911:06 amIAD - SEA
2 stops28h 39mMultiple Airlines
Deal found 5/28$149
Tue 9/106:55 amIAD - SEA
2 stops13h 07mAmerican Airlines
Deal found 5/27$152
Tue 7/2311:32 amIAD - SEA
1 stop26h 40mSun Country Air
Deal found 5/27$153
Thu 7/44:16 pmIAD - SEA
1 stop10h 28mAlaska Airlines
Deal found 5/28$154

Find flights from Dulles Intl to Seattle within your budget

Customize your flight search to find flights from Dulles Intl to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,740,132 searches. Data last updated May 28, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$277 - $296

Route

Depart

Return

Price

Washington, D.C. Dulles IntlSeattle/Tacoma Intl

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Tue 8/20

Nonstop6h 03m

Seattle/Tacoma Intl

Wed 8/28

Nonstop4h 57m

$277

Washington, D.C. Dulles IntlSeattle/Tacoma Intl

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Mon 8/19

Nonstop5h 47m

Seattle/Tacoma Intl

Wed 8/28

Nonstop4h 57m

$283

Washington, D.C. Dulles IntlSeattle/Tacoma Intl

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Sat 9/7

1 stop10h 26m

Seattle/Tacoma Intl

Tue 9/17

Nonstop4h 53m

$286

Washington, D.C. Dulles IntlSeattle/Tacoma Intl

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Sat 8/24

1 stop9h 52m

Seattle/Tacoma Intl

Wed 8/28

Nonstop5h 05m

$287

Washington, D.C. Dulles IntlSeattle/Tacoma Intl

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Mon 7/15

Nonstop5h 44m

Seattle/Tacoma Intl

Mon 7/22

Nonstop4h 59m

$289

Washington, D.C. Dulles IntlSeattle/Tacoma Intl

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Fri 9/6

1 stop10h 26m

Seattle/Tacoma Intl

Tue 9/17

Nonstop4h 53m

$292

Washington, D.C. Dulles IntlSeattle/Tacoma Intl

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Fri 7/12

1 stop15h 46m

Seattle/Tacoma Intl

Wed 7/24

2 stops32h 10m

$294

Washington, D.C. Dulles IntlSeattle/Tacoma Intl

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Tue 7/9

1 stop7h 59m

Seattle/Tacoma Intl

Fri 7/12

1 stop9h 11m

$295

Washington, D.C. Dulles IntlSeattle/Tacoma Intl

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Wed 8/21

1 stop10h 20m

Seattle/Tacoma Intl

Wed 8/28

1 stop8h 09m

$296

Flights are sorted by cheapest first

Deals found on 5/28

When is the best time to book a flight from Washington, D.C. Dulles Intl Airport to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Seattle. Price data was last updated on May 24, 2024.
The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 34 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

When is the cheapest time to fly from Washington, D.C. Dulles Intl Airport to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Seattle. Price data was last updated on May 26, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Seattle flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Dulles Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average temperature and rainfall totals by month.

SEA

Temperature

41 - 66.2 °F

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated May 28, 2024.
Get a feel of what it's like to fly with Sun Country Air, Alaska Airlines and United Airlines from Washington, D.C. to Seattle by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,194 reviews
Check prices

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.1

Comfort

7.9

Entertainment

7.3

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

Alaska Airlines
8.1
Very good
9,194 reviews
Alaska Airlines
8.1
Very good
9,194 reviews
Check prices

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.1

Comfort

7.9

Entertainment

7.3

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

Delta
8.0
Very good
10,476 reviews
Alaska Airlines
8.1
Very good
9,194 reviews
Check prices

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.1

Comfort

7.9

Entertainment

7.3

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

United Airlines
7.4
Good
10,799 reviews
Alaska Airlines
8.1
Very good
9,194 reviews
Check prices

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.1

Comfort

7.9

Entertainment

7.3

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

American Airlines
7.3
Good
14,316 reviews
Alaska Airlines
8.1
Very good
9,194 reviews
Check prices

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.1

Comfort

7.9

Entertainment

7.3

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

Sun Country Air
7.2
Good
597 reviews
Alaska Airlines
8.1
Very good
9,194 reviews
Check prices

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.1

Comfort

7.9

Entertainment

7.3

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from Washington, D.C. Dulles Intl?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Seattle. 6 airlines have flights to Seattle/Tacoma Intl from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 13 inbound flights from Washington, D.C. Dulles Intl per day.

  • Can I find flights from Washington, D.C. Dulles Intl Airport to Seattle for under $300 on Cheapflights?

    Yes, there are multiple flights from Washington, D.C. Dulles Intl Airport to Seattle for under $300. The cheapest flight booked recently is on Delta for just $277, but on average you can expect to pay $295.

  • Are there nonstop flights from Washington, D.C. Dulles Intl Airport to Seattle for under $300 on Cheapflights?

    Cheapflights has at least 20 direct flights from Washington, D.C. Dulles Intl Airport to Seattle under $300. A good price for a nonstop flight from Washington, D.C. Dulles Intl Airport to Seattle is less than $311.

  • Are there last-minute flights available from Washington, D.C. Dulles Intl Airport to Seattle for under $300?

    There are currently 20+ open flights from Washington, D.C. Dulles Intl Airport to Seattle within the next 7 days for less than $300.

  • What days are nonstop flights available from Washington, D.C. Dulles Intl Airport to Seattle?

    Nonstop flights can be found on the following days: Sunday, Tuesday, Wednesday, Friday, Saturday.

  • How many flights depart from Washington, D.C. Dulles Intl Airport to Seattle on average per day?

    Per day, 9 flights depart from Washington, D.C. Dulles Intl Airport to Seattle on average.
    Morning (6am - Noon) - 67% of flight departures
    Evening (6pm - Midnight) - 33% of flight departures

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Seattle?

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Seattle in 6h 03m. Fly via Delta, Alaska Airlines, or United Airlines to get the fastest option. Airlines will cover a distance of 2313 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Seattle round-trip?

    Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Seattle round-trip from $277. Other airlines that can offer you cheap pricing are Alaska Airlines, from $286, and United Airlines, from $287. Delta is currently priced 28% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Seattle one-way?

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $139. Sun Country Air flights start at $145 while deals on American Airlines start at $147 one-way.

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Seattle?

    The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Seattle are Japan Airlines (90%), United Airlines (87%) and Air Tahiti Nui (85%).

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Seattle?

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to Seattle is $144. On average you can expect to pay $744. The most popular route, (Washington, D.C. Dulles Intl - Seattle/Tacoma Intl), can usually be booked for $277.

  • What does IAD to SEA mean?

    Great question - IAD to SEA just means Washington, D.C. Dulles Intl Airport to Seattle/Tacoma Intl Airport. Now you’ll know what these unique codes when you look for flights!

  • Can I find deals for flights from Dulles Intl to Seattle that include extra baggage allowance?

    The amount of baggage you can bring on your Dulles Intl to Seattle flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Dulles Intl to Seattle with specific airlines?

    Yes, Cheapflights allows you to browse and filter Dulles Intl to Seattle flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Dulles Intl to Seattle that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Seattle.

  • Can I find deals for business class flights from Dulles Intl to Seattle?

    Yes. Cheapflights offers flight deals from Dulles Intl to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Dulles Intl to Seattle that allow pets onboard?

    Many airlines flying from Dulles Intl to Seattle offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Dulles Intl to Seattle?

    Yes, you can often find last-minute deals on Dulles Intl to Seattle flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Washington, D.C. Dulles Intl Airport to Seattle flight deals updated?

    The Washington, D.C. Dulles Intl Airport to Seattle flight deals you see on this page were last updated on 5/28.

  • What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Seattle?

    When booking a flight from Washington, D.C. Dulles Intl Airport to Seattle, you may want to consider flying on Undisclosed Carrier, American Airlines or Alaska Airlines as they are the most popular for this route.

  • When is the best time to book a flight from Washington, D.C. Dulles Intl Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Seattle (average of $247). Flying from Washington, D.C. Dulles Intl Airport to Seattle in July is currently the most expensive (average of $406). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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See prices for flight routes from nearby airports that may be better suited for you.

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Top 5 airlines flying from Dulles Intl to Seattle

Discover the top 5 airlines that operate flights from Dulles Intl to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,740,132 searches. Data last updated May 28, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$139Average$377FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapest$145Average$378FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
FrontierCheapest$188Average$265FlexibilityNo cancel feeOn-time62%
Search Frontier flights
United AirlinesCheapest$194Average$428FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$254Average$517FlexibilityNo cancel feeOn-time71%
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Search flights from Dulles Intl to Seattle by cabin class

Find flights from Dulles Intl to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from Dulles Intl to Seattle

Find hourly flight availability from Dulles Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 28, 2024.
1%of flight departuresEarly morningMidnight to 6 am
41%of flight departuresMorning6 am to noon
55%of flight departuresAfternoonNoon to 6 pm
3%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Dulles Intl to Seattle

Explore weekly flight availability from Dulles Intl to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 28, 2024.
Sunday14daily flights
Monday14daily flights
Tuesday11daily flights
Wednesday13daily flights
Thursday12daily flights
Friday15daily flights
Saturday14daily flights

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How does Cheapflights help users find flights from Dulles Intl to Seattle?

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Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Seattle?

Cheapflights simply makes it quick and affordable to book flights from Dulles Intl to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Dulles Intl to Seattle with no change fees?

Need flexible booking options for your flight to Seattle from Dulles Intl? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Dulles Intl to Seattle become cheaper?

Yes! Start tracking prices for Dulles Intl to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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