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Dulles Intl

$126+ Cheap flights from Washington to Dulles Intl (IAD)

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 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — IAD
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from Washington to Dulles Intl

Keep the following information in mind while searching for Washington to Dulles Intl flight deals. Data was last updated August 14, 2025.

Round-trip from

$230
(Frontier)

One-way from

$126
(Frontier)

Popular in

December

Cheapest in

September

Average price

$387

Good round-trip deal

$302 or less

Good one-way deal

$210 or less
From Washington to Washington, D.C. Dulles Intl
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One-way flight from Washington to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 9% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Washington to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Washington to Washington, D.C. Dulles Intl.
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Find flight deals from Washington to Dulles Intl

Cheapest flights from Washington to Dulles Intl
Explore the most affordable flight options available from Washington to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Frontier deal was found by Cheapflights users on 8/14. 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.
Thu 9/411:53 amGEG - IAD
2 stops18h 24mFrontier
Wed 9/109:15 amIAD - GEG
2 stops28h 43mFrontier
Deal found 8/14$230
This Frontier deal was found by Cheapflights users on 8/14. 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.
Thu 9/1811:53 amGEG - IAD
2 stops18h 24mFrontier
Thu 9/258:59 pmIAD - GEG
2 stops16h 59mFrontier
Deal found 8/14$233
This SmartFares deal was found by Cheapflights users on 8/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/114:20 pmSEA - IAD
Nonstop5h 03mAlaska Airlines
Fri 10/176:25 amIAD - SEA
Nonstop5h 43mAlaska Airlines
Deal found 8/14$257
This Alaska Airlines deal was found by Cheapflights users on 8/11. 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 9/97:44 pmGEG - IAD
1 stop8h 49mAlaska Airlines
Tue 9/166:09 pmIAD - GEG
1 stop9h 10mAlaska Airlines
Deal found 8/11$258
This Frontier deal was found by Cheapflights users on 8/14. 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.
Thu 9/1812:05 pmSEA - IAD
2 stops18h 12mFrontier
Sun 9/211:55 pmIAD - SEA
2 stops13h 35mFrontier
Deal found 8/14$260
This KAYAK deal was found by Cheapflights users on 8/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/174:20 pmSEA - IAD
Nonstop5h 03mHawaiian Airlines
Sun 9/217:00 amIAD - SEA
Nonstop5h 40mHawaiian Airlines
Deal found 8/13$263
This Delta deal was found by Cheapflights users on 8/14. 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 9/91:06 pmGEG - IAD
1 stop7h 26mDelta
Tue 9/165:00 pmIAD - GEG
2 stops10h 03mDelta
Deal found 8/14$264
This Frontier deal was found by Cheapflights users on 8/14. 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.
Thu 8/283:25 pmSEA - IAD
1 stop12h 05mFrontier
Thu 9/41:55 pmIAD - SEA
2 stops13h 35mFrontier
Deal found 8/14$266
This CheapOair deal was found by Cheapflights users on 8/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1710:16 amSEA - IAD
1 stop22h 43mFrontier
Fri 10/246:15 amIAD - SEA
2 stops52h 18mFrontier
Deal found 8/14$267
This Frontier deal was found by Cheapflights users on 8/14. 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.
Sat 10/47:00 amSEA - IAD
2 stops13h 55mFrontier
Sat 10/1812:54 pmIAD - SEA
2 stops21h 39mFrontier
Deal found 8/14$269
This flugladen.de deal was found by Cheapflights users on 8/14. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/41:40 pmGEG - IAD
1 stop7h 43mHawaiian Airlines
Wed 9/107:00 amIAD - GEG
1 stop8h 46mHawaiian Airlines
Deal found 8/14$270
This Vliegwinkel deal was found by Cheapflights users on 8/14. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/49:05 amSEA - IAD
Nonstop5h 04mHawaiian Airlines
Sat 9/137:00 amIAD - SEA
Nonstop5h 40mHawaiian Airlines
Deal found 8/14$270

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Dulles Intl 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 August 14, 2025.
Use the filters below to find and compare flights from Washington to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Washington

Fly to

Dulles Intl

Route

Depart

Return

Price

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Thu 9/4

11:53 am-9:17 am

2 stops18h 24m

Washington, D.C. Dulles Intl

Wed 9/10

9:15 am-10:58 am

2 stops28h 43m

$230

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Thu 9/18

11:53 am-9:17 am

2 stops18h 24m

Washington, D.C. Dulles Intl

Thu 9/25

8:59 pm-10:58 am

2 stops16h 59m

$233

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Tue 9/9

7:44 pm-7:33 am

1 stop8h 49m

Washington, D.C. Dulles Intl

Tue 9/16

9:00 am-4:51 pm

1 stop10h 51m

$258

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Tue 9/9

7:44 pm-7:33 am

1 stop8h 49m

Washington, D.C. Dulles Intl

Tue 9/16

6:09 pm-12:19 am

1 stop9h 10m

$258

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Tue 1/13

1:00 pm-11:16 pm

1 stop7h 16m

Washington, D.C. Dulles Intl

Tue 1/20

6:15 am-1:14 pm

1 stop9h 59m

$259

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Wed 1/14

2:05 pm-11:35 pm

1 stop6h 30m

Washington, D.C. Dulles Intl

Tue 1/20

6:15 am-1:14 pm

1 stop9h 59m

$259

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Wed 1/14

1:30 pm-11:50 pm

1 stop7h 20m

Washington, D.C. Dulles Intl

Wed 1/21

7:00 am-1:00 pm

1 stop9h 00m

$259

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Tue 1/13

1:00 pm-11:16 pm

1 stop7h 16m

Washington, D.C. Dulles Intl

Wed 1/21

6:15 am-1:14 pm

1 stop9h 59m

$259

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Tue 9/9

2:21 pm-11:40 pm

1 stop6h 19m

Washington, D.C. Dulles Intl

Tue 9/16

5:00 pm-11:58 pm

2 stops9h 58m

$264

SeattleWashington, D.C.

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Mon 9/8

11:30 pm-7:33 am

Nonstop5h 03m

Washington, D.C. Dulles Intl

Sat 9/20

6:09 pm-8:56 pm

Nonstop5h 47m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Dulles Intl

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

Cheapflights Insights

Everything you need to know about your flight from Washington to Washington, D.C. Dulles Intl Airport

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

Currently, July is the cheapest month in which you can book a flight from State of Washington to Washington, D.C. Dulles Intl Airport (average of $302). Flying from State of Washington to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 WA to IAD?

Find hourly flight availability from Washington to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

When flying from State of Washington to Washington, D.C. Dulles Intl Airport, 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 State of Washington to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Washington to Dulles Intl. 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 August 14, 2025.

The most flights from USWA to IAD are scheduled on a Thursday (33 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (15 on average).

How much does it cost to fly round-trip from State of Washington to Washington, D.C. Dulles Intl Airport?

Related info for your journey

Find useful and relevant information for your journey from Washington to Dulles Intl. 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 State of Washington to Washington, D.C. Dulles Intl Airport one-way?

    One-way options have recently been found by users for as low as $126 on Frontier. Other airlines that offer cheap prices include Hawaiian Airlines from $129 and Delta from $130 one-way.

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

    Most travelers choose Seattle/Tacoma Intl - Washington, D.C. Dulles Intl, Portland - Washington, D.C. Dulles Intl or Spokane - Washington, D.C. Dulles Intl when deciding on the best route from State of Washington to Washington, D.C. Dulles Intl Airport.

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

    Before booking your flight to Washington, D.C. Dulles Intl Airport from State of Washington, check out the most reliable airlines to get you to your destination on time: Austrian Airlines (85%), Brussels Airlines (85%), Lufthansa( 83%).

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

    While on average a flight from State of Washington to Washington, D.C. Dulles Intl Airport is generally $873, our data shows the cheapest flight currently is $158. When looking at the most popular route, (Seattle/Tacoma Intl - Washington, D.C. Dulles Intl), you can expect to pay $263 for that flight.

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

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from State of Washington to Washington, D.C. Dulles Intl Airport (average of $302). Flying from State of Washington to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Waldorf
Bowie

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Reagan-National flights
Los Angeles to Dulles Intl flights
Los Angeles to Reagan-National flights
Boston to Baltimore flights
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Boston to Reagan-National flights
Los Angeles to Baltimore flights
San Francisco to Reagan-National flights
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San Francisco to Baltimore flights
O'Hare Intl to Reagan-National flights
Atlanta to Baltimore flights
Seattle to Reagan-National flights
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Seattle to Baltimore flights
Atlanta to Dulles Intl flights
Seattle to Dulles Intl flights
O'Hare Intl to Baltimore flights
Hobby to Baltimore flights
Hobby to Reagan-National flights
Austin to Dulles Intl flights
Denver to Baltimore flights
San Diego to Dulles Intl flights
Atlanta to Reagan-National flights
Ontario to Dulles Intl flights
Fort Lauderdale to Baltimore flights
Burbank to Baltimore flights
Tampa to Baltimore flights
Fort Lauderdale to Reagan-National flights
John F Kennedy Intl to Dulles Intl flights
Charlotte to Dulles Intl flights
Minneapolis to Reagan-National flights
Midway to Dulles Intl flights
Hobby to Dulles Intl flights
Denver to Dulles Intl flights
John F Kennedy Intl to Reagan-National flights
Orlando to Dulles Intl flights
Denver to Reagan-National flights
San Diego to Reagan-National flights
Detroit to Reagan-National flights
George Bush Intcntl to Dulles Intl flights
Orlando to Baltimore flights
Ontario to Baltimore flights
Minneapolis to Dulles Intl flights
Charlotte to Baltimore flights
Orlando to Reagan-National flights
Austin to Reagan-National flights

Top 5 airlines flying from Washington to Dulles Intl

Discover the top 5 airlines that operate flights from Washington to Dulles Intl. 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$143Average$332FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$174Average$460FlexibilityNo cancel feeOn-time75%
DeltaCheapest$206Average$402FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$237Average$452FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$256Average$486FlexibilityNo cancel feeOn-time71%

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