Flights from Washington Airport IAD to Seattle Airport SEA

We've found the cheapest flights to Seattle

Returns from £147.44

One-way from £84.57

If it is your first time travelling to Seattle-Tacoma International then check out the airliners ITA Airways, Starlux, Ethiopian Airlines, Copa Airlines, Brussels Airlines, Avianca, Austrian Airlines, Virgin Atlantic, United Airlines, Korean Air, Jet Linx Aviation, China Eastern Airlines, Delta Air Lines, Qatar Airways, Hawaiian Airlines, American Airlines and Alaska Airlines. These airliners all offer direct flights that depart from Washington Dulles International, so you will find flying to Seattle-Tacoma International is quite easy. The flight time is approximately 5 Hours 10 Minutes.

The cost of the flights varies significantly so we can’t provide you an estimate. Prices can be 50% cheaper if you book more than a month in advance. The cheapest flights available will generally be mid week or late in the evening, so if you are on a budget then these are the flight times you should consider. Alternatively, you could book well in advance and you flight could be up to 50% cheaper, especially with budget airliners. We recommend our viewers to pay and reserve the seats in advance. This ensures you get the best seats on the plane at the cheapest prices.

When arriving at Seattle-Tacoma International don’t forget to set your watch to the local time!

Please see below the airlines that fly from Washington Dulles International (IAD) to Seattle-Tacoma International (SEA) and the amount of daily flights in operation.

Flights Chart
AirlinerMoTuWeThFrSaSuFirst FlightLast FlightFlights
Alaska Airlines001221107:0518:27VIEW FLIGHTS
Qatar Airways000221107:0521:35VIEW FLIGHTS
Hawaiian Airlines000221107:0521:35VIEW FLIGHTS
American Airlines000221107:0521:35VIEW FLIGHTS
Delta Air Lines001111107:0010:01VIEW FLIGHTS
Virgin Atlantic000111107:0007:00VIEW FLIGHTS
United Airlines001111017:5517:55VIEW FLIGHTS
Korean Air000111107:0007:00VIEW FLIGHTS
Jet Linx Aviation000111107:0507:05VIEW FLIGHTS
China Eastern Airlines000111107:0007:00VIEW FLIGHTS
Ethiopian Airlines001101020:5620:56VIEW FLIGHTS
Copa Airlines001101020:5620:56VIEW FLIGHTS
Brussels Airlines001101020:5620:56VIEW FLIGHTS
Avianca001101020:5620:56VIEW FLIGHTS
Austrian Airlines001101020:5620:56VIEW FLIGHTS
Starlux000110021:3521:35VIEW FLIGHTS
ITA Airways000100020:5620:56VIEW FLIGHTS

Flights from Washington Dulles International to Seattle-Tacoma International are very limited. Only Alaska Airlines operate flights, of which there is only 1 per week. The time of the departure for this flight is 07:05

You can find the latest flight availability and prices from Alaska Airlines at alaskaair.com. You can also book direct and get their latest discounts.

Flight times for the route are summarised in the table below. These time were correct at the time of writing, but please be aware that times may vary from time to time so please check their website for exact times and the dates you wish to fly.

Flights Time In WeekDays
DayFlight TimesFlights
Wednesday
10:01
AirlineFlight  No
Delta Air LinesDL1015
10:05
AirlineFlight  No
Alaska AirlinesAS351
17:55
AirlineFlight  No
United AirlinesUA1303
20:56
AirlineFlight  No
Austrian AirlinesOS7907
Ethiopian AirlinesET1368
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
VIEW FLIGHTS
Thursday
07:00
AirlineFlight  No
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
Virgin AtlanticVS2534
07:05
AirlineFlight  No
Alaska AirlinesAS351
Hawaiian AirlinesHA4967
American AirlinesAA7484
Qatar AirwaysQR8811
Jet Linx AviationJL5441
17:55
AirlineFlight  No
United AirlinesUA1303
18:27
AirlineFlight  No
Alaska AirlinesAS406
20:56
AirlineFlight  No
Austrian AirlinesOS7907
Ethiopian AirlinesET1368
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
ITA AirwaysAZ4416
21:35
AirlineFlight  No
Hawaiian AirlinesHA4969
American AirlinesAA9349
Qatar AirwaysQR2990
StarluxJX7073
VIEW FLIGHTS
Friday
07:00
AirlineFlight  No
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
Virgin AtlanticVS2534
07:05
AirlineFlight  No
Alaska AirlinesAS351
Hawaiian AirlinesHA4967
American AirlinesAA7484
Qatar AirwaysQR8811
Jet Linx AviationJL5441
17:55
AirlineFlight  No
United AirlinesUA1303
18:27
AirlineFlight  No
Alaska AirlinesAS406
21:35
AirlineFlight  No
Hawaiian AirlinesHA4969
American AirlinesAA9349
Qatar AirwaysQR2990
StarluxJX7073
VIEW FLIGHTS
Saturday
07:00
AirlineFlight  No
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
Virgin AtlanticVS2534
07:05
AirlineFlight  No
Alaska AirlinesAS351
Hawaiian AirlinesHA4967
American AirlinesAA7484
Qatar AirwaysQR8811
Jet Linx AviationJL5441
17:55
AirlineFlight  No
United AirlinesUA1303
20:56
AirlineFlight  No
Austrian AirlinesOS7907
Ethiopian AirlinesET1368
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
VIEW FLIGHTS
Sunday
07:00
AirlineFlight  No
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
Virgin AtlanticVS2534
07:05
AirlineFlight  No
Alaska AirlinesAS351
Hawaiian AirlinesHA4967
American AirlinesAA7484
Qatar AirwaysQR8811
Jet Linx AviationJL5441
VIEW FLIGHTS

Flights to Seattle-Tacoma International are also available from airports close to Washington Dulles International. Below we have provided a short list of routes which you could consider is you feel that are suitable.

Alternative Direct Routes
RouteStopsDistanceFlying Time
Baltimore Washington Thurgood Marshall to Seattle05 Hours 13 Minutes
Washington Ronald Reagan Washington National to Seattle05 Hours 12 Minutes
Philadelphia to Seattle05 Hours 18 Minutes

Before you start your journey remember to check you have all your documents; in particular, your passport and flight tickets. You will be surprised at the amount of people of forget these!

Don't forget to book a hire car!

Search for cheap car rentals at IAD

Flight Price FAQ - Washington (IAD) to Seattle (SEA)

DIRECT Hawaiian Airlines
What is the cheapest direct flight one way from Washington IAD to Seattle SEA?
The cheapest direct flight one way from Washington IAD to Seattle SEA is £84.57 ($113 €97.85)
£84.57
$113 | €97.85
Check Latest Price
DIRECT Delta
What is the cheapest direct return flight from Washington IAD to Seattle SEA?
The cheapest direct return flight from Washington IAD to Seattle SEA is £147.44 ($197 €170.58)
£147.44
$197 | €170.58
Check Latest Price
1+ STOP(S)
What is the cheapest flight one way from Washington IAD to Seattle SEA?
The cheapest flight one way from Washington IAD to Seattle SEA is £80.83 ($108 €93.52)
£80.83
$108 | €93.52
Check Latest Price
Important Note: Prices shown are taken from searches performed for flights operating during the current month. Please use the "Latest Price" buttons to get the most up to date airfares.

Compare Flight Prices from IAD to SEA

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Flight Info FAQ - Washington (IAD) to Seattle (SEA)

Who flies from Washington to Seattle?
The following airlines fly from Washington (IAD) to Seattle (SEA): Alaska Airlines, American Airlines, Austrian Airlines, Avianca, Brussels Airlines, China Eastern Airlines, Copa Airlines, Delta Air Lines, Ethiopian Airlines, Hawaiian Airlines, ITA Airways, Jet Linx Aviation, Korean Air, Qatar Airways, Starlux, United Airlines, Virgin Atlantic.
How far is the flight from Washington to Seattle?
The flight from Washington to Seattle is 3,701KM or 2,300 miles.
How long does the flight from Washington to Seattle to take?
The flight from Washington to Seattle takes 5 Hours 10 Minutes.

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