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District of Columbia

$144+ Cheap flights from Seattle (SEA) to District of Columbia

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 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — IAD
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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Cheap flight deals from Seattle to District of Columbia

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to District of Columbia (USDC). 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 December 18, 2024.

Round-trip from

$265
(flugladen.de)

One-way from

$144
(Alaska Airlines)
From Seattle/Tacoma Intl to District of Columbia
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One-way flight from Seattle/Tacoma Intl to District of Columbia
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Find flight deals from Seattle to District of Columbia

Cheapest flights from Seattle to District of Columbia
Explore the most affordable flight options available from Seattle to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This Frontier deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/259:36 pmSEA - DCA
1 stop11h 32mFrontier
Sun 1/127:00 amDCA - SEA
1 stop11h 41mFrontier
Deal found 12/17$324
This Orbitz deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/259:36 pmSEA - DCA
1 stop11h 32mMultiple Airlines
Thu 1/95:29 pmDCA - SEA
Nonstop6h 06mMultiple Airlines
Deal found 12/17$334
This Alaska Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/319:39 pmSEA - IAD
Nonstop5h 01mAlaska Airlines
Tue 1/75:25 pmIAD - SEA
1 stop19h 05mAlaska Airlines
Deal found 12/17$386
This Delta deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2410:08 pmSEA - IAD
Nonstop5h 02mDelta
Wed 1/84:05 pmIAD - SEA
Nonstop6h 01mDelta
Deal found 12/17$417
This American Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2411:10 pmSEA - DCA
1 stop9h 32mAmerican Airlines
Wed 1/812:59 pmDCA - SEA
1 stop10h 05mAmerican Airlines
Deal found 12/17$476
This Delta deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/265:30 amSEA - DCA
1 stop7h 30mDelta
Tue 1/75:10 pmDCA - SEA
1 stop10h 40mDelta
Deal found 12/17$480
This United Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/252:20 pmSEA - IAD
1 stop6h 39mUnited Airlines
Thu 1/912:40 pmIAD - SEA
1 stop8h 35mUnited Airlines
Deal found 12/17$480
This United Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/311:55 pmSEA - DCA
1 stop17h 32mUnited Airlines
Tue 1/77:02 amDCA - SEA
1 stop8h 05mUnited Airlines
Deal found 12/17$526
This Southwest deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2510:40 amSEA - DCA
2 stops9h 15mSouthwest
Thu 1/93:00 pmDCA - SEA
2 stops10h 40mSouthwest
Deal found 12/17$540
This American Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2510:26 amSEA - IAD
1 stop9h 13mAmerican Airlines
Wed 1/81:52 pmIAD - SEA
1 stop8h 18mAmerican Airlines
Deal found 12/17$556
This Southwest deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/241:10 pmSEA - IAD
1 stop6h 50mSouthwest
Mon 1/67:25 amIAD - SEA
2 stops18h 35mSouthwest
Deal found 12/16$581
This Alaska Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/248:34 amSEA - DCA
Nonstop5h 06mAlaska Airlines
Tue 1/78:00 amDCA - SEA
Nonstop6h 04mAlaska Airlines
Deal found 12/17$608

Find flights from Seattle to District of Columbia within your budget

Customize your flight search to find flights from Seattle to District of Columbia 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 2,558,603 searches. Data last updated December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleWashington, D.C.

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Sat 1/25

9:54 am-5:57 pm

Nonstop5h 03m

Washington, D.C. Dulles Intl

Sat 2/1

6:57 pm-10:00 pm

Nonstop6h 03m

$265

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Tue 2/18

11:17 pm-11:35 am

1 stop9h 18m

Washington, D.C. Reagan-National

Tue 2/25

4:15 pm-10:38 pm

1 stop9h 23m

$268

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Fri 1/31

2:05 pm-9:59 pm

Nonstop4h 54m

Washington, D.C. Reagan-National

Fri 2/7

7:00 am-2:25 pm

1 stop10h 25m

$269

SeattleWashington, D.C.

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Mon 1/13

7:00 am-8:40 pm

1 stop10h 40m

Washington, D.C. Dulles Intl

Sat 1/18

5:30 pm-8:31 pm

Nonstop6h 01m

$270

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Thu 3/6

2:02 pm-12:03 pm

1 stop19h 01m

Washington, D.C. Reagan-National

Sun 3/9

1:03 pm-12:02 pm

1 stop25h 59m

$271

SeattleWashington, D.C.

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Sat 2/1

7:10 am-3:10 pm

Nonstop5h 00m

Washington, D.C. Dulles Intl

Sat 2/8

6:00 am-10:45 am

1 stop7h 45m

$275

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Sat 1/11

7:14 am-7:50 pm

1 stop9h 36m

Washington, D.C. Reagan-National

Sat 1/18

11:40 am-7:10 pm

1 stop10h 30m

$276

SeattleWashington, D.C.

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Sat 2/1

5:22 am-4:14 pm

1 stop7h 52m

Washington, D.C. Dulles Intl

Sat 2/8

5:24 pm-11:31 pm

1 stop9h 07m

$276

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Thu 1/9

5:30 am-4:00 pm

1 stop7h 30m

Washington, D.C. Reagan-National

Sun 1/12

7:34 am-1:00 pm

1 stop8h 26m

$284

SeattleWashington, D.C.

SEA - DCA

SEADCA

Seattle/Tacoma Intl

Mon 1/13

6:10 am-8:48 pm

2 stops11h 38m

Washington, D.C. Reagan-National

Sat 1/18

4:13 pm-9:11 pm

1 stop7h 58m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 28 results
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Best time to book a flight from Seattle to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from Seattle 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.

Travel insights for flights from Seattle to District of Columbia

Get recent, data-driven insights about flights from Seattle to District of Columbia including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Seattle to District of Columbia?

Currently, November is the cheapest month in which you can book a flight from Seattle to District of Columbia (average of $299). Flying from Seattle to District of Columbia in June is currently the most expensive (average of $377). 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.

What is the cheapest time of day to fly from SEA to DC?

Find hourly flight availability from Seattle to District of Columbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to District of Columbia as you normally would.

Rainfall in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in District of Columbia ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit District of Columbia when rainfall is around 2.6 in.

Temperature in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to District of Columbia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing District of Columbia

Get insights into the airlines that provide service to District of Columbia. 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 District of Columbia. Reviews last updated December 18, 2024.
See what other customers who have flown with Alaska Airlines, United Airlines and American Airlines from Seattle to District of Columbia have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,848 reviews

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,552 reviews
Southwest
8.1
Very good
4,848 reviews

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

JetBlue
7.4
Good
3,279 reviews
Southwest
8.1
Very good
4,848 reviews

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,059 reviews
Southwest
8.1
Very good
4,848 reviews

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from Seattle to District of Columbia. 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 from for flights from Seattle to District of Columbia?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to District of Columbia. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • What are the cheapest airlines to fly from Seattle to District of Columbia one-way?

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $144. Users have also found prices from $147 and $147 on United Airlines and American Airlines, respectively.

  • What are the most reliable airlines from Seattle to District of Columbia?

    Before booking your flight to District of Columbia from Seattle, check out the most reliable airlines to get you to your destination on time: Copa Airlines (98%), United Airlines (94%), Ethiopian Air( 93%).

  • What are the cheapest flights from Seattle to District of Columbia?

    While on average a flight from Seattle to District of Columbia is generally $839, our data shows the cheapest flight currently is $141. When looking at the most popular route, (Seattle/Tacoma Intl - Washington, D.C. Dulles Intl), you can expect to pay $177 for that flight.

  • Can I find deals for flights from Seattle to District of Columbia that include hotel bookings?

    Yes. In addition to deals on Seattle to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to District of Columbia?

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

  • Can I find deals for business class flights from Seattle to District of Columbia?

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

  • What is the cheapest month to book a flight from Seattle to District of Columbia?

    Currently, November is the cheapest month in which you can book a flight from Seattle to District of Columbia (average of $299). Flying from Seattle to District of Columbia in June is currently the most expensive (average of $377). 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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Alternative routes for Seattle to District of Columbia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Seattle to District of Columbia

Discover the top 9 airlines that operate flights from Seattle to District of Columbia. 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 2,558,603 searches. Data last updated December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$86Average$225FlexibilityNo cancel feeOn-time62%
DeltaCheapest$152Average$483FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$169Average$534FlexibilityNo cancel feeOn-time83%
Spirit AirlinesCheapest$192Average$268FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$215Average$519FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$222Average$506FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$237Average$433FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$248Average$475FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$248Average$315FlexibilityNo cancel feeOn-time62%
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