Dulles Intl

$129+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — IAD
Jul 1 — Jul 81
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 26, 2025.

Round-trip from

$258
(Hawaiian Airlines)

One-way from

$129
(Alaska Airlines)

Popular in

December

Cheapest in

September

Average price

$458

Good round-trip deal

$346 or less

Good one-way deal

$186 or less
From Washington to Washington, D.C. Dulles Intl
One-way flight from Washington to Washington, D.C. Dulles Intl
Highest demand for flights based on searches. 7% potential increase in price ($32 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Average for round-trip flights in June 2025
Price to beat on a round-trip flight from Washington to Washington, D.C. Dulles Intl.
Price to beat on a one-way flight from Washington to Washington, D.C. Dulles Intl.

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 June 26, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/25. 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.
Wed 8/64:47 pmGEG - IAD
1 stop11h 03mAlaska Airlines
Wed 8/136:13 pmIAD - GEG
1 stop8h 46mAlaska Airlines
Deal found 6/25$258
This Delta deal was found by Cheapflights users on 6/26. 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.
Wed 8/205:30 pmGEG - IAD
1 stop9h 25mDelta
Sat 8/237:35 amIAD - GEG
1 stop8h 06mDelta
Deal found 6/26$259
This Trip.com deal was found by Cheapflights users on 6/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/75:30 pmSEA - IAD
1 stop10h 04mMultiple Airlines
Wed 8/139:00 amIAD - SEA
Nonstop5h 47mMultiple Airlines
Deal found 6/24$272
This SmartFares deal was found by Cheapflights users on 6/25. 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.
Wed 8/1311:30 pmSEA - IAD
Nonstop4h 57mAlaska Airlines
Mon 8/189:00 amIAD - SEA
Nonstop5h 47mAlaska Airlines
Deal found 6/25$275
This Hawaiian Airlines deal was found by Cheapflights users on 6/24. 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.
Wed 8/138:10 amSEA - IAD
1 stop8h 09mHawaiian Airlines
Tue 8/195:25 pmIAD - SEA
1 stop9h 26mHawaiian Airlines
Deal found 6/24$276
This United Airlines deal was found by Cheapflights users on 6/24. 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 8/66:25 pmGEG - IAD
1 stop7h 59mUnited Airlines
Wed 8/136:35 amIAD - GEG
1 stop7h 21mUnited Airlines
Deal found 6/24$284
This Priceline deal was found by Cheapflights users on 6/24. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/43:11 pmSEA - IAD
1 stop12h 19mFrontier
Mon 7/77:30 amIAD - SEA
1 stop9h 36mFrontier
Deal found 6/24$286
This Cheapflightsfares deal was found by Cheapflights users on 6/25. 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.
Fri 7/1811:59 pmSEA - IAD
1 stop8h 44mSun Country Air
Sat 7/1912:46 pmIAD - SEA
1 stop13h 01mSun Country Air
Deal found 6/25$289
This Alaska Airlines deal was found by Cheapflights users on 6/25. 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.
Sat 9/134:06 pmPSC - IAD
1 stop12h 26mAlaska Airlines
Wed 9/179:00 amIAD - PSC
1 stop9h 29mAlaska Airlines
Deal found 6/25$289
This American Airlines deal was found by Cheapflights users on 6/24. 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.
Mon 9/156:00 amGEG - IAD
1 stop7h 50mAmerican Airlines
Wed 9/1711:18 amIAD - GEG
2 stops10h 21mAmerican Airlines
Deal found 6/24$293
This Southwest deal was found by Cheapflights users on 6/25. 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 8/208:25 amSEA - IAD
1 stop10h 40mSouthwest
Tue 8/265:45 amIAD - SEA
2 stops15h 55mSouthwest
Deal found 6/25$293
This Delta deal was found by Cheapflights users on 6/25. 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.
Sat 9/135:45 pmPSC - IAD
1 stop9h 15mDelta
Wed 9/171:00 pmIAD - PSC
2 stops9h 52mDelta
Deal found 6/25$294

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 June 26, 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

Wed 8/6

4:47 pm-6:50 am

1 stop11h 03m

Washington, D.C. Dulles Intl

Wed 8/13

6:13 pm-11:59 pm

1 stop8h 46m

$258

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Wed 8/20

7:25 pm-5:55 am

1 stop7h 30m

Washington, D.C. Dulles Intl

Tue 8/26

7:35 am-12:41 pm

1 stop8h 06m

$259

SeattleWashington, D.C.

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Thu 8/7

5:30 pm-6:34 am

1 stop10h 04m

Washington, D.C. Dulles Intl

Wed 8/13

9:00 am-11:47 am

Nonstop5h 47m

$272

SeattleWashington, D.C.

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Wed 8/13

11:30 pm-7:27 am

Nonstop4h 57m

Washington, D.C. Dulles Intl

Mon 8/18

9:00 am-11:47 am

Nonstop5h 47m

$275

SeattleWashington, D.C.

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Wed 8/13

8:10 am-7:19 pm

1 stop8h 09m

Washington, D.C. Dulles Intl

Tue 8/19

5:25 pm-11:51 pm

1 stop9h 26m

$276

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Wed 8/6

6:25 pm-5:24 am

1 stop7h 59m

Washington, D.C. Dulles Intl

Wed 8/13

6:35 am-10:56 am

1 stop7h 21m

$284

SeattleWashington, D.C.

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Fri 7/11

3:11 pm-6:34 am

1 stop12h 23m

Washington, D.C. Dulles Intl

Fri 7/18

7:30 am-2:06 pm

1 stop9h 36m

$286

SeattleWashington, D.C.

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Fri 7/18

11:59 pm-11:43 am

1 stop8h 44m

Washington, D.C. Dulles Intl

Sat 7/19

12:46 pm-10:47 pm

1 stop13h 01m

$289

PascoWashington, D.C.

PSC - IAD

PSCIAD

Pasco Tri Cities

Sat 9/13

4:06 pm-7:32 am

1 stop12h 26m

Washington, D.C. Dulles Intl

Wed 9/17

9:00 am-3:29 pm

1 stop9h 29m

$289

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Mon 9/15

6:00 am-4:50 pm

1 stop7h 50m

Washington, D.C. Dulles Intl

Wed 9/17

11:18 am-6:39 pm

2 stops10h 21m

$293

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/25

Showing 1-10 of 60 results
1
2
3
...
6

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, August is the cheapest month in which you can book a flight from State of Washington to Washington, D.C. Dulles Intl Airport (average of $309). Flying from State of Washington to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $346). 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 June 26, 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 June 26, 2025.

The most flights from USWA to IAD are scheduled on a Wednesday (32 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (13 on average).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated June 26, 2025.
Read through reviews of airlines operating flights from Washington to Washington, D.C. Dulles Intl Airport, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
8.0
Very good

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $129 on Alaska Airlines. Other airlines that offer cheap prices include Delta from $130 and Southwest from $135 one-way.

  • What are the most popular routes 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: Avianca (93%), Copa Airlines (89%), ANA( 88%).

  • 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 $1,006, our data shows the cheapest flight currently is $148. When looking at the most popular route, (Seattle/Tacoma Intl - Washington, D.C. Dulles Intl), you can expect to pay $257 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, August is the cheapest month in which you can book a flight from State of Washington to Washington, D.C. Dulles Intl Airport (average of $309). Flying from State of Washington to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $346). 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?

Book flights to Washington if you plan to visit one of these locations
Arlington
Woodbridge
Alexandria
Tysons
Silver Spring
Linthicum Heights
Fredericksburg
Gaithersburg
Fairfax
Easton
Towson
Falls Church
Rockville
Springfield
National Harbor
Manassas
Dundalk
Waldorf
Bowie
Hanover

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Dulles Intl

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

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 June 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$143Average$337FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$174Average$453FlexibilityNo cancel feeOn-time75%
DeltaCheapest$213Average$409FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$237Average$453FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$336Average$488FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.