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$143+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SEA
ago. 3 — ago. 101
dom. 8/3
dom. 8/10
1 adult, Economy
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Cheap flight deals from Dulles Intl to Washington

Keep the following information in mind while searching for Dulles Intl to Washington flight deals. Data was last updated julio 29, 2025.

Round-trip from

$257
(Alaska Airlines)

One-way from

$143
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$455

Good round-trip deal

$356 or less

Good one-way deal

$222 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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Highest demand for flights based on searches. 3% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 julio 29, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/28. 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.
mié. 8/277:00 amIAD - SEA
Nonstop5h 40mAlaska Airlines
sáb. 9/69:05 amSEA - IAD
Nonstop5h 04mAlaska Airlines
Deal found 7/28$257
This KAYAK deal was found by Cheapflights users on 7/27. 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.
sáb. 9/207:00 amIAD - SEA
Nonstop5h 38mHawaiian Airlines
sáb. 9/274:20 pmSEA - IAD
Nonstop5h 03mHawaiian Airlines
Deal found 7/27$263
This Delta deal was found by Cheapflights users on 7/26. 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.
lun. 8/187:35 amIAD - SEA
Nonstop5h 45mDelta
mar. 8/269:55 pmSEA - IAD
Nonstop5h 00mDelta
Deal found 7/26$287
This American Airlines deal was found by Cheapflights users on 7/27. 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.
sáb. 9/202:21 pmIAD - SEA
1 stop8h 44mAmerican Airlines
sáb. 9/275:26 amSEA - IAD
1 stop8h 21mAmerican Airlines
Deal found 7/27$295
This Hawaiian Airlines deal was found by Cheapflights users on 7/29. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/186:25 amIAD - GEG
1 stop9h 12mHawaiian Airlines
sáb. 10/257:30 amGEG - IAD
1 stop7h 58mHawaiian Airlines
Deal found 7/29$296
This United Airlines deal was found by Cheapflights users on 7/29. 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.
sáb. 9/205:33 pmIAD - PDX
Nonstop5h 30mUnited Airlines
sáb. 9/278:08 amPDX - IAD
Nonstop5h 07mUnited Airlines
Deal found 7/29$297
This Delta deal was found by Cheapflights users on 7/28. 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.
sáb. 10/187:35 amIAD - GEG
1 stop8h 00mDelta
sáb. 10/251:16 pmGEG - IAD
1 stop8h 24mDelta
Deal found 7/28$297
This Frontier deal was found by Cheapflights users on 7/27. 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.
jue. 8/147:30 amIAD - SEA
1 stop9h 36mFrontier
lun. 8/183:11 pmSEA - IAD
1 stop12h 23mFrontier
Deal found 7/27$298
This SmartFares deal was found by Cheapflights users on 7/27. 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.
mié. 9/109:00 amIAD - PDX
1 stop7h 47mHawaiian Airlines
mié. 9/178:37 pmPDX - IAD
1 stop7h 56mHawaiian Airlines
Deal found 7/27$298
This CheapOair deal was found by Cheapflights users on 7/28. 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.
vie. 8/298:00 amIAD - PDX
1 stop13h 14mFrontier
dom. 8/3111:27 amPDX - IAD
1 stop16h 03mFrontier
Deal found 7/28$299
This Southwest deal was found by Cheapflights users on 7/28. 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.
mar. 8/262:25 pmIAD - SEA
1 stop9h 30mSouthwest
mié. 8/277:00 amSEA - IAD
2 stops12h 05mSouthwest
Deal found 7/28$302
This Cheapflightsfares deal was found by Cheapflights users on 7/28. 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.
jue. 10/1611:52 amIAD - SEA
1 stop8h 33mSun Country Air
dom. 10/1911:59 pmSEA - IAD
1 stop8h 27mSun Country Air
Deal found 7/28$304

Cheapflights Fare Finder

 
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 julio 29, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Washington that are best for you.

Fly from

Dulles Intl

Fly to

Washington

Route

Depart

Return

Price

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

mié. 8/27

7:00 am-9:40 am

Nonstop5h 40m

Seattle/Tacoma Intl

sáb. 9/6

9:05 am-5:09 pm

Nonstop5h 04m

$257

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

sáb. 9/20

7:00 am-9:38 am

Nonstop5h 38m

Seattle/Tacoma Intl

sáb. 9/27

4:20 pm-12:23 am

Nonstop5h 03m

$263

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

lun. 8/18

7:35 am-10:20 am

Nonstop5h 45m

Seattle/Tacoma Intl

mar. 8/26

9:55 pm-5:55 am

Nonstop5h 00m

$287

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

sáb. 9/20

2:21 pm-8:05 pm

1 stop8h 44m

Seattle/Tacoma Intl

sáb. 9/27

5:26 am-4:47 pm

1 stop8h 21m

$295

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

sáb. 10/18

6:25 am-11:06 am

1 stop7h 41m

Spokane

sáb. 10/25

7:30 am-6:28 pm

1 stop7h 58m

$296

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

sáb. 9/20

5:33 pm-8:03 pm

Nonstop5h 30m

Portland

sáb. 9/27

8:08 am-4:15 pm

Nonstop5h 07m

$297

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

sáb. 10/18

7:35 am-12:35 pm

1 stop8h 00m

Spokane

sáb. 10/25

1:16 pm-12:40 am

1 stop8h 24m

$297

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

jue. 8/14

7:30 am-2:06 pm

1 stop9h 36m

Seattle/Tacoma Intl

lun. 8/18

3:11 pm-6:34 am

1 stop12h 23m

$298

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

mié. 9/10

9:00 am-1:47 pm

1 stop7h 47m

Portland

mié. 9/17

8:37 pm-7:33 am

1 stop7h 56m

$298

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

vie. 8/29

8:00 am-6:14 pm

1 stop13h 14m

Portland

dom. 8/31

11:27 am-6:30 am

1 stop16h 03m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 60 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.

Cheapflights Insights

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

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 June is currently the most expensive (average of $389). 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 julio 29, 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 julio 29, 2025.

The most flights from IAD to USWA are scheduled on a Tuesday (30 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).

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 julio 29, 2025.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Washington, such as Alaska Airlines, Southwest, and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,238 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,979 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,605 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 $143 on Frontier. Other airlines that offer cheap prices include Alaska Airlines from $144 and Sun Country Air from $145 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 Japan Airlines (97%), China Eastern (82%) and Delta (82%).

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

    On average you can expect to pay $1,019 for a flight from Washington, D.C. Dulles Intl Airport to State of Washington. The cheapest flight overall is $156 while the most popular route, (Washington, D.C. Dulles Intl - Seattle/Tacoma Intl) is currently priced at $257.

  • 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 June is currently the most expensive (average of $389). 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

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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 8 airlines flying from Dulles Intl to Washington

Discover the top 8 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 julio 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$111Average$252FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$144Average$370FlexibilityNo cancel feeOn-time83%
Hawaiian AirlinesCheapest$168Average$389FlexibilityNo cancel feeOn-time85%
DeltaCheapest$206Average$392FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$262Average$481FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$282Average$452FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$297Average$522FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$367Average$498FlexibilityNo cancel feeOn-time63%

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