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$144+ Cheap flights from Dulles Intl (IAD) to Washington

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.
IAD — SEA
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Dulles Intl to Washington

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Washington (USWA). 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 January 21, 2025.

Round-trip from

$277
(Delta)

One-way from

$144
(United Airlines)

Good round-trip deal

$399 or less

Good one-way deal

$237 or less
From Washington, D.C. Dulles Intl to Washington
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One-way flight from Washington, D.C. Dulles Intl to Washington
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Washington.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Washington.
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Find flight deals from Dulles Intl to Washington

Cheapest flights from Dulles Intl to Washington
Explore the most affordable flight options available from Dulles Intl to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This Delta deal was found by Cheapflights users on 1/21. 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.
Wed 3/267:43 amIAD - SEA
Nonstop6h 02mDelta
Tue 4/110:15 pmSEA - IAD
Nonstop5h 04mDelta
Deal found 1/21$277
This United Airlines deal was found by Cheapflights users on 1/21. 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.
Sat 2/156:17 pmIAD - SEA
1 stop9h 38mUnited Airlines
Tue 2/188:10 amSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 1/21$287
This Alaska Airlines deal was found by Cheapflights users on 1/21. 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 3/45:18 pmIAD - SEA
1 stop19h 05mAlaska Airlines
Thu 3/69:40 pmSEA - IAD
Nonstop4h 52mAlaska Airlines
Deal found 1/21$292
This United Airlines deal was found by Cheapflights users on 1/20. 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 4/25:30 pmIAD - PDX
Nonstop5h 44mUnited Airlines
Tue 4/811:30 pmPDX - IAD
Nonstop4h 59mUnited Airlines
Deal found 1/20$297
This American Airlines deal was found by Cheapflights users on 1/21. 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 2/115:00 amIAD - SEA
1 stop10h 41mAmerican Airlines
Wed 2/2610:21 pmSEA - IAD
1 stop7h 21mAmerican Airlines
Deal found 1/21$303
This eDestinos deal was found by Cheapflights users on 1/21. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1112:37 pmIAD - SEA
2 stops47h 58mFrontier
Wed 2/261:36 pmSEA - IAD
2 stops25h 41mFrontier
Deal found 1/21$306
This Delta deal was found by Cheapflights users on 1/21. 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 2/114:05 pmIAD - GEG
1 stop9h 47mDelta
Wed 2/191:10 pmGEG - IAD
1 stop8h 10mDelta
Deal found 1/21$307
This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/212:45 pmIAD - PDX
1 stop7h 46mSun Country Air
Tue 6/106:45 pmPDX - IAD
1 stop13h 58mSun Country Air
Deal found 1/20$309
This Delta deal was found by Cheapflights users on 1/20. 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 3/412:05 pmIAD - PDX
1 stop14h 24mDelta
Wed 3/1212:36 pmPDX - IAD
1 stop8h 55mDelta
Deal found 1/20$310
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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 2/46:57 pmIAD - PDX
1 stop7h 46mAlaska Airlines
Tue 2/115:26 pmPDX - IAD
2 stops19h 57mAlaska Airlines
Deal found 1/20$315
This American Airlines deal was found by Cheapflights users on 1/20. 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 4/82:12 pmIAD - PDX
2 stops10h 22mAmerican Airlines
Tue 4/155:31 amPDX - IAD
1 stop7h 46mAmerican Airlines
Deal found 1/20$322
This Cheapflightsfares deal was found by Cheapflights users on 1/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2512:40 pmIAD - SEA
1 stop13h 04mSun Country Air
Fri 7/411:59 pmSEA - IAD
1 stop8h 44mSun Country Air
Deal found 1/21$329

Find flights from Dulles Intl to Washington within your budget

Customize your flight search to find flights from Dulles Intl to Washington 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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Wed 3/26

7:43 am-10:45 am

Nonstop6h 02m

Seattle/Tacoma Intl

Tue 4/1

10:15 pm-6:19 am

Nonstop5h 04m

$277

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Sat 2/15

6:17 pm-12:55 am

1 stop9h 38m

Seattle/Tacoma Intl

Tue 2/18

8:10 am-4:09 pm

Nonstop4h 59m

$287

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Tue 3/4

5:18 pm-9:23 am

1 stop19h 05m

Seattle/Tacoma Intl

Thu 3/6

9:40 pm-5:32 am

Nonstop4h 52m

$292

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Wed 4/2

5:30 pm-8:14 pm

Nonstop5h 44m

Portland

Tue 4/8

11:30 pm-7:29 am

Nonstop4h 59m

$297

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Tue 2/11

5:00 am-12:41 pm

1 stop10h 41m

Seattle/Tacoma Intl

Wed 2/26

10:21 pm-8:42 am

1 stop7h 21m

$303

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Tue 2/11

12:37 pm-9:35 am

2 stops47h 58m

Seattle/Tacoma Intl

Wed 2/26

1:36 pm-6:17 pm

2 stops25h 41m

$306

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Tue 2/11

4:05 pm-10:52 pm

1 stop9h 47m

Spokane

Wed 2/19

1:10 pm-12:20 am

1 stop8h 10m

$307

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Mon 6/2

12:45 pm-5:31 pm

1 stop7h 46m

Portland

Tue 6/10

6:45 pm-11:43 am

1 stop13h 58m

$309

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Tue 3/4

12:05 pm-11:29 pm

1 stop14h 24m

Portland

Tue 3/11

7:29 pm-6:19 am

1 stop7h 50m

$310

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Tue 2/4

6:57 pm-11:43 pm

1 stop7h 46m

Portland

Tue 2/11

5:26 pm-4:23 pm

2 stops19h 57m

$315

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 53 results
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Best time to book a flight from Dulles Intl to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington 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.

Travel insights for flights from Dulles Intl to Washington

Get recent, data-driven insights about flights from Dulles Intl to Washington including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to State of Washington?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to State of Washington (average of $238). Flying from Washington, D.C. Dulles Intl Airport to State of Washington in July is currently the most expensive (average of $411). 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 IAD to WA?

Find hourly flight availability from Dulles Intl to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.

When flying from Washington, D.C. Dulles Intl Airport to State of Washington, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to State of Washington

Explore weekly flight availability from Dulles Intl to Washington. 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 January 21, 2025.

The most flights from IAD to USWA are scheduled on a Tuesday (14 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (12 on average).

Rainfall in Washington by month

Plan your trip to Washington by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

Plan your trip to Washington by taking into account the average temperature totals by month.

If weather is an important factor for your trip to State of Washington, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated January 21, 2025.
Get a feel of what it's like to fly with Sun Country Air, Delta and United Airlines from Washington, D.C. to Washington by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

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
4,662 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

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
9,706 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

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
8,521 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

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
8,985 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

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.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

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 Dulles Intl to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    One-way options have recently been found by users for as low as $144 on United Airlines. Other airlines that offer cheap prices include Alaska Airlines from $148 and Southwest from $154 one-way.

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to State of Washington?

    When deciding which route to take from Washington, D.C. Dulles Intl Airport to State of Washington consider Washington, D.C. Dulles Intl - Seattle/Tacoma Intl, Washington, D.C. Dulles Intl - Portland or Washington, D.C. Dulles Intl - Spokane as they are the most popular.

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

    The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to State of Washington are Air Tahiti Nui (93%), Hawaiian Airlines (90%) and Qatar Airways (89%).

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

    On average you can expect to pay $989 for a flight from Washington, D.C. Dulles Intl Airport to State of Washington. The cheapest flight overall is $143 while the most popular route, (Washington, D.C. Dulles Intl - Seattle/Tacoma Intl) is currently priced at $277.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Washington 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 Washington, D.C. Dulles Intl Airport to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to State of Washington (average of $238). Flying from Washington, D.C. Dulles Intl Airport to State of Washington in July is currently the most expensive (average of $411). 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 Dulles Intl to Washington

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 Washington

Discover the top 5 airlines that operate flights from Dulles Intl to Washington. 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$144Average$360FlexibilityNo cancel feeOn-time83%
DeltaCheapest$187Average$538FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$230Average$585FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$254Average$484FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$274Average$541FlexibilityNo cancel feeOn-time69%
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