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$139+ 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 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SEA
may. 4 — may. 111
dom. 5/4
dom. 5/11
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 abril 29, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$257
(United Airlines)

One-way from

$139
(Alaska Airlines)

Popular in

December

Cheapest in

September

Average price

$392

Good round-trip deal

$359 or less

Good one-way deal

$192 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Seattle/Tacoma Intl flights.
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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. 1% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in April 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 abril 29, 2025.

This United Airlines deal was found by Cheapflights users on 4/29. 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.
mar. 5/276:48 amIAD - SEA
1 stop7h 44mUnited Airlines
mar. 6/312:44 pmSEA - IAD
1 stop7h 06mUnited Airlines
Deal found 4/29$257
This Orbitz deal was found by Cheapflights users on 4/29. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/319:00 amIAD - SEA
Nonstop5h 39mMultiple Airlines
dom. 6/13:11 pmSEA - IAD
1 stop11h 47mMultiple Airlines
Deal found 4/29$258
This Frontier deal was found by Cheapflights users on 4/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/97:45 amIAD - SEA
1 stop13h 17mFrontier
vie. 5/233:11 pmSEA - IAD
1 stop11h 44mFrontier
Deal found 4/29$260
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/246:15 pmIAD - SEA
Nonstop5h 45mAlaska Airlines
mar. 5/274:00 pmSEA - IAD
Nonstop4h 59mAlaska Airlines
Deal found 4/29$267
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/317:45 amIAD - SEA
Nonstop5h 48mDelta
dom. 6/19:50 pmSEA - IAD
Nonstop5h 02mDelta
Deal found 4/29$287
This Delta deal was found by Cheapflights users on 4/28. 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.
mar. 7/86:00 amIAD - GEG
1 stop8h 11mDelta
mar. 7/2211:10 pmGEG - IAD
1 stop7h 00mDelta
Deal found 4/28$297
This Hawaiian Airlines deal was found by Cheapflights users on 4/29. 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.
mar. 5/276:30 amIAD - PDX
1 stop7h 23mHawaiian Airlines
mar. 6/31:25 pmPDX - IAD
1 stop7h 34mHawaiian Airlines
Deal found 4/29$298
This Orbitz deal was found by Cheapflights users on 4/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/27:30 amIAD - PDX
1 stop8h 25mMultiple Airlines
lun. 6/91:25 pmPDX - IAD
1 stop7h 34mMultiple Airlines
Deal found 4/28$302
This Sun Country Air deal was found by Cheapflights users on 4/28. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/1112:40 pmIAD - PDX
1 stop7h 48mSun Country Air
dom. 6/1511:59 pmPDX - IAD
1 stop8h 44mSun Country Air
Deal found 4/28$305
This Frontier deal was found by Cheapflights users on 4/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/167:45 amIAD - PDX
1 stop10h 57mFrontier
vie. 5/231:50 pmPDX - IAD
1 stop13h 05mFrontier
Deal found 4/29$310
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/49:00 amIAD - GEG
1 stop8h 22mAlaska Airlines
mié. 6/1110:45 amGEG - IAD
2 stops16h 10mAlaska Airlines
Deal found 4/29$312
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/52:32 pmIAD - GEG
1 stop12h 06mUnited Airlines
mié. 5/145:29 amGEG - IAD
1 stop7h 07mUnited Airlines
Deal found 4/28$314

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 abril 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

mar. 5/27

6:48 am-11:32 am

1 stop7h 44m

Seattle/Tacoma Intl

mar. 6/3

12:44 pm-10:50 pm

1 stop7h 06m

$257

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

lun. 5/12

7:45 am-6:00 pm

1 stop13h 15m

Seattle/Tacoma Intl

mié. 5/21

11:30 pm-7:36 am

Nonstop5h 06m

$258

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

vie. 5/9

7:45 am-6:02 pm

1 stop13h 17m

Seattle/Tacoma Intl

vie. 5/23

3:11 pm-5:55 am

1 stop11h 44m

$260

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

sáb. 5/24

6:15 pm-9:00 pm

Nonstop5h 45m

Seattle/Tacoma Intl

mar. 5/27

4:00 pm-11:59 pm

Nonstop4h 59m

$267

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

mar. 7/8

3:30 pm-10:00 pm

1 stop9h 30m

Spokane

mar. 7/22

7:26 pm-5:57 am

1 stop7h 31m

$297

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

mar. 5/27

6:30 am-10:53 am

1 stop7h 23m

Portland

mar. 6/3

1:25 pm-11:59 pm

1 stop7h 34m

$298

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

lun. 6/2

7:30 am-12:55 pm

1 stop8h 25m

Portland

lun. 6/9

1:25 pm-11:59 pm

1 stop7h 34m

$302

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

mié. 6/11

12:40 pm-5:28 pm

1 stop7h 48m

Portland

dom. 6/15

11:59 pm-11:43 am

1 stop8h 44m

$305

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

vie. 5/16

7:45 am-3:42 pm

1 stop10h 57m

Portland

vie. 5/23

1:50 pm-5:55 am

1 stop13h 05m

$310

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

mié. 6/4

9:00 am-2:22 pm

1 stop8h 22m

Spokane

mié. 6/11

10:45 am-5:55 am

2 stops16h 10m

$312

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

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 July is currently the most expensive (average of $405). 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 abril 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 abril 29, 2025.

The most flights from IAD to USWA are scheduled on a Tuesday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 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 abril 29, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta 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.
Alaska Airlines
8.0
Very good
9,961 reviews

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,961 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,295 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,929 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,405 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Overall

8.0

Crew

8.5

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 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 $139 on Alaska Airlines. Other airlines that offer cheap prices include United Airlines from $148 and Hawaiian Airlines from $149 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 Iberia (100%), Singapore Airlines (100%) and Japan Airlines (87%).

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

    On average you can expect to pay $869 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 $226.

  • 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 $405). 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 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 abril 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$144Average$357FlexibilityNo cancel feeOn-time83%
FrontierCheapest$148Average$260FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$168Average$427FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$216Average$590FlexibilityNo cancel feeOn-time75%
DeltaCheapest$237Average$484FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$285Average$440FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$296Average$498FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$367Average$487FlexibilityNo cancel feeOn-time63%

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