Cheap flights from Seattle to Washington Dulles Intl Airport

Round-trip
1 adult
Economy
From?
To?
Fri 10/29
Fri 11/5

Travel Restriction Alert

The COVID-19 (coronavirus) outbreak may impact travel from Seattle/Tacoma Intl to Washington Dulles Intl Airport.
View current United States travel restrictions

Flight information for Seattle to Washington Dulles Intl Airport
(SEA to IAD)

Find info about flight duration, direct flights, and airports for your flight from Seattle to Washington Dulles Intl Airport
Best Price Found$245The best flight deal from Seattle to Washington Dulles Intl Airport found on momondo in the last 72 hours is $245
Fastest flight time4h 50mThe fastest flight from Seattle to Washington Dulles Intl Airport takes 4h 50m
Direct flightsMon, Tue, Fri and SatDirect flights go from Seattle to Washington Dulles Intl Airport on Monday, Tuesday, Friday and Saturday. Airlines offering direct flights are: United Airlines, Alaska Airlines and Japan Airlines.

How to get the cheapest flight ticket from Seattle to Washington Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Seattle to Washington Dulles Intl Airport?

February

The cheapest time of year to fly to Washington Dulles Intl Airport from Seattle is February. Most expensive is December

What is the cheapest airline that flies to Washington Dulles Intl Airport from Seattle?

Sun Country Air

Alaska Airlines, Delta, and Frontier are the most popular carriers operating from Seattle to Washington Dulles Intl Airport

How far in advance should you book Seattle to Washington Dulles Intl Airport flights?

55 days before

The cheapest time to buy a flight from Seattle to Washington Dulles Intl Airport is approximately 55 days to departure


Easily compare round-trip flights from Seattle to Washington Dulles Intl Airport

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Seattle to Washington Dulles Intl Airport by changing tabs
Multiple Airlines
Nov 3
SEA1:18 pmSeattle/Tacoma Intl
14h 12m
2 stops
IAD3:30 amWashington Dulles Intl
Nov 6
IAD2:30 amWashington Dulles Intl
5h 57m
SEA8:27 amSeattle/Tacoma Intl
Alaska Airlines
Nov 15
SEA4:00 amSeattle/Tacoma Intl
5h 13m
IAD9:13 amWashington Dulles Intl
Nov 21
IAD2:05 pmWashington Dulles Intl
5h 55m
SEA8:00 pmSeattle/Tacoma Intl
Delta
Nov 5
SEA7:40 amSeattle/Tacoma Intl
5h 00m
IAD12:40 pmWashington Dulles Intl
Nov 17
IAD2:14 pmWashington Dulles Intl
6h 05m
SEA8:19 pmSeattle/Tacoma Intl
American Airlines
Nov 15
SEA5:00 pmSeattle/Tacoma Intl
9h 29m
1 stop
IAD2:29 amWashington Dulles Intl
Nov 17
IAD6:01 amWashington Dulles Intl
13h 47m
2 stops
SEA7:48 pmSeattle/Tacoma Intl
United Airlines
Dec 31
SEA6:55 pmSeattle/Tacoma Intl
6h 28m
1 stop
IAD1:23 amWashington Dulles Intl
Jan 8
IAD12:39 pmWashington Dulles Intl
6h 00m
SEA6:39 pmSeattle/Tacoma Intl
Multiple Airlines
Nov 3
SEA1:10 pmSeattle/Tacoma Intl
14h 20m
2 stops
IAD3:30 amWashington Dulles Intl
Nov 7
IAD2:14 pmWashington Dulles Intl
6h 05m
SEA8:19 pmSeattle/Tacoma Intl

Find the cheapest one-way flights from Seattle to Washington Dulles Intl Airport

If you're looking for one-way flights from Seattle to Washington Dulles Intl Airport, view some of our deals below provided by Alaska Airlines, Frontier and United Airlines
Alaska Airlines
Nov 17
SEA10:55 amSeattle/Tacoma Intl
4h 52m
IAD3:47 pmWashington Dulles Intl
Multiple Airlines
Nov 3
SEA1:10 pmSeattle/Tacoma Intl
14h 20m
2 stops
IAD3:30 amWashington Dulles Intl
Frontier
Nov 2
SEA2:58 pmSeattle/Tacoma Intl
36h 32m
2 stops
IAD3:30 amWashington Dulles Intl

Search last-minute flights to Washington Dulles Intl Airport from Seattle

Find and compare flight prices for your last-minute flight from Seattle to Washington Dulles Intl Airport
Multiple Airlines
Oct 29
SEA7:55 pmSeattle/Tacoma Intl
13h 44m
2 stops
IAD9:39 amWashington Dulles Intl
Jan 4
IAD1:57 pmWashington Dulles Intl
5h 58m
SEA7:55 pmSeattle/Tacoma Intl
United Airlines
Nov 2
SEA4:30 amSeattle/Tacoma Intl
11h 23m
1 stop
IAD3:53 pmWashington Dulles Intl
Nov 13
IAD12:40 pmWashington Dulles Intl
5h 59m
SEA6:39 pmSeattle/Tacoma Intl
Alaska Airlines
Nov 2
SEA8:37 amSeattle/Tacoma Intl
7h 53m
1 stop
IAD4:30 pmWashington Dulles Intl
Nov 7
IAD2:00 amWashington Dulles Intl
5h 55m
SEA7:55 amSeattle/Tacoma Intl
Delta
Oct 29
SEA7:40 amSeattle/Tacoma Intl
5h 00m
IAD12:40 pmWashington Dulles Intl
Nov 4
IAD2:30 amWashington Dulles Intl
5h 57m
SEA8:27 amSeattle/Tacoma Intl
American Airlines
Nov 2
SEA6:00 pmSeattle/Tacoma Intl
9h 29m
1 stop
IAD3:29 amWashington Dulles Intl
Nov 13
IAD1:09 amWashington Dulles Intl
14h 58m
2 stops
SEA4:07 pmSeattle/Tacoma Intl
Major Airline
Oct 29
SEA5:21 amSeattle/Tacoma Intl
5h 09m
IAD10:30 amWashington Dulles Intl
Oct 30
IAD3:42 amWashington Dulles Intl
5h 58m
SEA9:40 amSeattle/Tacoma Intl

Best airlines flying from Seattle to Washington Dulles Intl Airport

Compare and see reviews for airlines that fly from Seattle to Washington Dulles Intl Airport with momondo
AirlineRatingFree CancellationPrice
Frontier
PriceFrom $114
Free Cancellation
Rating
6.2
6.6

Boarding

5.9

Comfort

7.0

Crew

4.8

Entertainment

5.1

Food

Reviews

They could have had kiosks for bag tags ! Made us wait in a long line for bag drop off

1 / 10
Sun Country Air
PriceFrom $126
Free Cancellation
Rating
7.8
8.0

Boarding

7.6

Comfort

8.5

Crew

7.0

Entertainment

6.9

Food

Reviews

Price was great. Paying for selecting seats and overhead storage was not nice. Nice new plane. On time flights in both directions.

1 / 9
Spirit Airlines
PriceFrom $127
Free Cancellation
Rating
6.4
6.5

Boarding

6.0

Comfort

6.9

Crew

4.9

Entertainment

5.2

Food

Reviews

Flights were changed twice then canceled at the last minute. Previous flights have been changed and canceled. Done with Spirit.

1 / 10
Delta
PriceFrom $128
Free Cancellation
Rating
8.2
8.2

Boarding

8.4

Comfort

8.3

Crew

8.1

Entertainment

8.0

Food

Reviews

Great

1 / 10
Alaska Airlines
PriceFrom $128
Free Cancellation
Rating
8.2
8.6

Boarding

8.3

Comfort

8.6

Crew

7.8

Entertainment

7.4

Food

Reviews

Very late

1 / 10
United Airlines
PriceFrom $143
Free Cancellation
Rating
6.9
7.3

Boarding

6.8

Comfort

7.5

Crew

6.7

Entertainment

6.2

Food

Reviews

Crew is horrible

1 / 10
American Airlines
PriceFrom $170
Free Cancellation
Rating
7.2
7.4

Boarding

7.1

Comfort

7.8

Crew

7.1

Entertainment

6.8

Food

Reviews

Flight attendant for first class is definitely not a morning person. Oh and the WiFi DID NOT WORK!

1 / 10

  • Are airlines flying from Seattle/Tacoma Intl to Washington Dulles Intl offering flexible cancellation due to COVID-19?

    Some of our partner airlines flying from Seattle/Tacoma Intl to Washington Dulles Intl are adopting new policies due to the global impact of COVID-19. Some of the airlines that may be waiving their cancellation fees are United Airlines, Alaska Airlines, and Delta. You can search for the full list of airlines like United Airlines that are offering this flexibility.

  • How far is Seattle/Tacoma Intl to Washington Dulles Intl by plane?

    There are 2299.7 mi between Seattle/Tacoma Intl and Washington Dulles Intl. A reasonable flight in good conditions will take 4h 50m.


Can I fly to Washington Dulles Intl from Seattle/Tacoma Intl right now?

Information is based on travel restrictions for travel to Washington Dulles Intl within the United States

Most visitors from Seattle/Tacoma Intl need to provide a negative COVID-19 test result and/or quarantine to enter Washington Dulles Intl.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Washington Dulles Intl.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Washington Dulles Intl.

Can I fly back to Seattle/Tacoma Intl from Washington Dulles Intl?

Returning to Seattle/Tacoma Intl from Washington Dulles Intl

COVID-19 testing requirements
Visitors from Washington Dulles Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Washington Dulles Intl are not required to quarantine after entering Seattle/Tacoma Intl.

If you are planning to travel to Washington Dulles Intl Airport at this time, it is recommended that you stay up to date on current restrictions and follow proper safety measures while in public.

Alternative routes for Seattle to Washington Dulles Intl Airport

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Seattle to Baltimore Flights
Fastest flight time4h 59m
Cheapest price$159
Seattle to Washington Reagan-National Airport Flights
Fastest flight time4h 54m
Cheapest price$193
Spokane to Baltimore Flights
Fastest flight time6h 46m
Cheapest price$254
Spokane to Washington Reagan-National Airport Flights
Fastest flight time6h 02m
Cheapest price$323
Spokane to Washington Dulles Intl Airport Flights
Fastest flight time6h 09m
Cheapest price$323
Bellingham to Baltimore Flights
Fastest flight time17h 14m
Cheapest price$336

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