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$127+ 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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SEA
ene. 15 — ene. 221
jue. 1/15
jue. 1/22
1 adult, Economy
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Cheap 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 diciembre 16, 2025.

This United Airlines deal was found by Cheapflights users on 12/15. 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.
mié. 12/315:55 pmIAD - SEA
Nonstop6h 02mUnited Airlines
mar. 1/68:10 amSEA - IAD
Nonstop5h 06mUnited Airlines
Deal found 12/15$402
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/315:50 pmIAD - PDX
Nonstop5h 58mUnited Airlines
dom. 1/411:55 pmPDX - IAD
1 stop8h 50mUnited Airlines
Deal found 12/14$458
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/315:55 pmIAD - SEA
Nonstop6h 02mUnited Airlines
dom. 1/411:59 pmSEA - IAD
1 stop8h 46mUnited Airlines
Deal found 12/14$477
This Delta deal was found by Cheapflights users on 12/15. 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. 12/227:05 amIAD - SEA
Nonstop5h 57mDelta
vie. 1/93:20 pmSEA - IAD
Nonstop4h 50mDelta
Deal found 12/15$497
This Delta deal was found by Cheapflights users on 12/15. 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. 12/2210:57 amIAD - SEA
1 stop8h 50mDelta
jue. 1/83:20 pmSEA - IAD
Nonstop4h 50mDelta
Deal found 12/15$507
This American Airlines deal was found by Cheapflights users on 12/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/311:57 pmIAD - PDX
2 stops11h 02mAmerican Airlines
lun. 1/510:21 pmPDX - IAD
1 stop9h 37mAmerican Airlines
Deal found 12/14$522
This Delta deal was found by Cheapflights users on 12/15. 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. 12/227:05 amIAD - SEA
Nonstop5h 57mDelta
sáb. 1/106:05 amSEA - IAD
1 stop7h 41mDelta
Deal found 12/15$528
This Delta deal was found by Cheapflights users on 12/15. 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. 12/2210:57 amIAD - SEA
1 stop8h 50mDelta
mié. 1/71:38 pmSEA - IAD
1 stop7h 10mDelta
Deal found 12/15$538
This Delta deal was found by Cheapflights users on 12/14. 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.
mié. 12/247:05 amIAD - SEA
1 stop8h 31mDelta
mar. 1/63:20 pmSEA - IAD
Nonstop4h 50mDelta
Deal found 12/14$547
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/218:26 amIAD - SEA
Nonstop6h 01mUnited Airlines
dom. 1/411:59 pmSEA - IAD
1 stop8h 46mUnited Airlines
Deal found 12/14$552
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/245:50 pmIAD - PDX
Nonstop5h 58mUnited Airlines
lun. 1/510:52 pmPDX - IAD
Nonstop4h 58mUnited Airlines
Deal found 12/14$553
This American Airlines deal was found by Cheapflights users on 12/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/241:57 pmIAD - PDX
1 stop10h 22mAmerican Airlines
lun. 1/510:21 pmPDX - IAD
1 stop9h 37mAmerican Airlines
Deal found 12/14$562

Find 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 diciembre 16, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$209
(Delta)

One-way from

$127
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$461

Good round-trip deal

$343 or less

Good one-way deal

$251 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Seattle/Tacoma Intl flights.
Search Deals
From Washington, D.C. Dulles Intl to Washington
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Washington
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Washington.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Washington.
Search Deals

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 diciembre 16, 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. 2/25

12:23 pm-8:00 pm

1 stop10h 37m

Seattle/Tacoma Intl

jue. 3/5

3:20 pm-11:10 pm

Nonstop4h 50m

$209

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

sáb. 2/14

5:55 pm-8:56 pm

Nonstop6h 01m

Seattle/Tacoma Intl

dom. 2/15

8:17 am-4:19 pm

Nonstop5h 02m

$218

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

vie. 3/13

12:12 pm-6:24 pm

1 stop9h 12m

Seattle/Tacoma Intl

mar. 3/17

6:00 am-4:40 pm

1 stop7h 40m

$219

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

dom. 1/25

6:00 am-10:42 am

1 stop7h 42m

Seattle/Tacoma Intl

sáb. 1/31

11:10 pm-11:52 am

1 stop9h 42m

$219

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

vie. 1/9

5:55 pm-8:57 pm

Nonstop6h 02m

Seattle/Tacoma Intl

dom. 1/11

12:35 pm-12:59 am

1 stop9h 24m

$228

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

vie. 1/16

6:04 pm-9:08 pm

Nonstop6h 04m

Seattle/Tacoma Intl

mar. 1/20

8:30 am-4:26 pm

Nonstop4h 56m

$238

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

lun. 2/2

5:17 pm-10:43 pm

1 stop8h 26m

Seattle/Tacoma Intl

mié. 2/4

8:20 am-4:26 pm

Nonstop5h 06m

$245

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

jue. 1/15

5:55 pm-8:57 pm

Nonstop6h 02m

Seattle/Tacoma Intl

dom. 1/18

8:10 am-4:16 pm

Nonstop5h 06m

$245

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

jue. 2/12

5:55 pm-8:56 pm

Nonstop6h 01m

Seattle/Tacoma Intl

lun. 2/23

8:17 am-4:19 pm

Nonstop5h 02m

$245

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

vie. 1/16

5:55 pm-8:57 pm

Nonstop6h 02m

Seattle/Tacoma Intl

mar. 1/20

5:10 pm-6:47 am

1 stop10h 37m

$247

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

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, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to State of Washington (average of $157). Flying from Washington, D.C. Dulles Intl Airport to State of Washington in March is currently the most expensive (average of $270). 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 diciembre 16, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 7% on flights from Washington, D.C. Dulles Intl Airport to State of Washington by exploring options for tickets in the evening.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to State of Washington?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Washington. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to State of Washington flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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

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 diciembre 16, 2025.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Washington, such as Alaska Airlines, Delta, and Hawaiian Airlines. 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
11,469 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Alaska Airlines
8.0
Very good
11,469 reviews
Alaska Airlines
8.0
Very good
11,469 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Delta
7.9
Good
8,008 reviews
Alaska Airlines
8.0
Very good
11,469 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Hawaiian Airlines
7.8
Good
2,819 reviews
Alaska Airlines
8.0
Very good
11,469 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
United Airlines
7.4
Good
9,092 reviews
Alaska Airlines
8.0
Very good
11,469 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
American Airlines
7.2
Good
11,049 reviews
Alaska Airlines
8.0
Very good
11,469 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

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.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to State of Washington?

    A quick flight from Washington, D.C. Dulles Intl Airport to State of Washington can take about 6h 01m. Delta provides one of the quickest options available for as low as $218. Airlines will cover a distance of 2299 mi. This flight may include one or multiple stops.

  • 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 $116 on Frontier. Other airlines that offer cheap prices include Southwest from $129 and Delta from $129 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 ITA Airways (100%), United Airlines (87%) and Austrian Airlines (78%).

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

    On average you can expect to pay $1,192 for a flight from Washington, D.C. Dulles Intl Airport to State of Washington. The cheapest flight overall is $119 while the most popular route, (Washington, D.C. Dulles Intl - Seattle/Tacoma Intl) is currently priced at $191.

  • 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, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to State of Washington (average of $157). Flying from Washington, D.C. Dulles Intl Airport to State of Washington in March is currently the most expensive (average of $270). 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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Reagan-National to George Bush Intcntl flights
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Baltimore to Salt Lake City flights
Dulles Intl to Honolulu flights

Top 7 airlines flying from Dulles Intl to Washington

Discover the top 7 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 diciembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$111Average$258FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$149Average$393FlexibilityNo cancel feeOn-time85%
DeltaCheapest$179Average$390FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$260Average$471FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$274Average$450FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$336Average$527FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$367Average$498FlexibilityNo cancel feeOn-time63%

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