Flights from Washington Airport IAD to Seattle Airport SEA

We've found the cheapest flights to Seattle

Returns from £212.67

One-way from £105.97

If it is your first time travelling to Seattle-Tacoma International then check out the airliners Finnair, Iberia, Lufthansa, Korean Air, Japan Airlines, Ethiopian Airlines, Copa Airlines, China Eastern Airlines, Brussels Airlines, Avianca, Austrian Airlines, Jet Linx Aviation, Delta Air Lines, Qatar Airways, Hawaiian Airlines, Air Tahiti Nui, American Airlines, Alaska Airlines and United 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
United Airlines222444408:4522:09VIEW FLIGHTS
Alaska Airlines333333306:3018:15VIEW FLIGHTS
American Airlines333333206:3020:42VIEW FLIGHTS
Qatar Airways333333106:3018:15VIEW FLIGHTS
Hawaiian Airlines333333106:3018:15VIEW FLIGHTS
Air Tahiti Nui333333106:3018:15VIEW FLIGHTS
Jet Linx Aviation111111106:3006:30VIEW FLIGHTS
Delta Air Lines111111107:4507:45VIEW FLIGHTS
Lufthansa111111017:4820:18VIEW FLIGHTS
Korean Air111111007:4507:45VIEW FLIGHTS
Japan Airlines111111009:1009:10VIEW FLIGHTS
Ethiopian Airlines111111012:5020:18VIEW FLIGHTS
Copa Airlines111111017:4820:18VIEW FLIGHTS
China Eastern Airlines111111007:4507:45VIEW FLIGHTS
Brussels Airlines111111017:4820:18VIEW FLIGHTS
Avianca111111017:4820:18VIEW FLIGHTS
Austrian Airlines111111017:4820:18VIEW FLIGHTS
Iberia011111018:1518:15VIEW FLIGHTS
Finnair101101009:0009:00VIEW FLIGHTS

United Airlines offer the highest number of flights for this route with departures times between 08:45 and 22:09.

You can find the latest flight availability and prices from United Airlines at united.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
Monday
06:30
AirlineFlight  No
Air Tahiti NuiTN2395
Alaska AirlinesAS308
Hawaiian AirlinesHA4967
American AirlinesAA7576
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:45
AirlineFlight  No
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
08:46
AirlineFlight  No
United AirlinesUA2005
09:00
AirlineFlight  No
FinnairAY4588
Air Tahiti NuiTN2722
Alaska AirlinesAS396
Hawaiian AirlinesHA4968
American AirlinesAA9392
Qatar AirwaysQR8904
09:10
AirlineFlight  No
Japan AirlinesJL5441
17:26
AirlineFlight  No
United AirlinesUA1998
18:15
AirlineFlight  No
Air Tahiti NuiTN2583
Alaska AirlinesAS351
Hawaiian AirlinesHA4836
American AirlinesAA7484
Qatar AirwaysQR2990
20:18
AirlineFlight  No
Austrian AirlinesOS7907
Ethiopian AirlinesET1368
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
VIEW FLIGHTS
Tuesday
06:30
AirlineFlight  No
Air Tahiti NuiTN2395
Alaska AirlinesAS308
Hawaiian AirlinesHA4967
American AirlinesAA7576
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:45
AirlineFlight  No
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
08:46
AirlineFlight  No
United AirlinesUA2005
09:00
AirlineFlight  No
Air Tahiti NuiTN2722
Alaska AirlinesAS396
Hawaiian AirlinesHA4968
American AirlinesAA9392
Qatar AirwaysQR8904
09:10
AirlineFlight  No
Japan AirlinesJL5441
17:26
AirlineFlight  No
United AirlinesUA1998
18:15
AirlineFlight  No
Air Tahiti NuiTN2583
Alaska AirlinesAS351
Hawaiian AirlinesHA4836
American AirlinesAA7484
IberiaIB7263
Qatar AirwaysQR2990
20:18
AirlineFlight  No
Austrian AirlinesOS7907
Ethiopian AirlinesET1368
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
VIEW FLIGHTS
Wednesday
06:30
AirlineFlight  No
Air Tahiti NuiTN2395
Alaska AirlinesAS308
Hawaiian AirlinesHA4967
American AirlinesAA7576
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:45
AirlineFlight  No
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
08:46
AirlineFlight  No
United AirlinesUA2005
09:00
AirlineFlight  No
FinnairAY4588
Air Tahiti NuiTN2722
Alaska AirlinesAS396
Hawaiian AirlinesHA4968
American AirlinesAA9392
Qatar AirwaysQR8904
09:10
AirlineFlight  No
Japan AirlinesJL5441
17:26
AirlineFlight  No
United AirlinesUA1998
18:15
AirlineFlight  No
Air Tahiti NuiTN2583
Alaska AirlinesAS351
Hawaiian AirlinesHA4836
American AirlinesAA7484
IberiaIB7263
Qatar AirwaysQR2990
20:18
AirlineFlight  No
Austrian AirlinesOS7907
Ethiopian AirlinesET1368
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
VIEW FLIGHTS
Thursday
06:30
AirlineFlight  No
Air Tahiti NuiTN2395
Alaska AirlinesAS308
Hawaiian AirlinesHA4967
American AirlinesAA7576
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:45
AirlineFlight  No
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
08:45
AirlineFlight  No
United AirlinesUA1366
09:00
AirlineFlight  No
FinnairAY4588
Air Tahiti NuiTN2722
Alaska AirlinesAS396
Hawaiian AirlinesHA4968
American AirlinesAA9392
Qatar AirwaysQR8904
09:10
AirlineFlight  No
Japan AirlinesJL5441
12:50
AirlineFlight  No
United AirlinesUA1395
Ethiopian AirlinesET1368
17:48
AirlineFlight  No
United AirlinesUA326
Austrian AirlinesOS7907
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
18:15
AirlineFlight  No
Air Tahiti NuiTN2583
Alaska AirlinesAS351
Hawaiian AirlinesHA4836
American AirlinesAA7484
IberiaIB7263
Qatar AirwaysQR2990
22:09
AirlineFlight  No
United AirlinesUA2136
VIEW FLIGHTS
Friday
06:30
AirlineFlight  No
Air Tahiti NuiTN2395
Alaska AirlinesAS308
Hawaiian AirlinesHA4967
American AirlinesAA7576
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:45
AirlineFlight  No
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
08:45
AirlineFlight  No
United AirlinesUA1366
09:00
AirlineFlight  No
Air Tahiti NuiTN2722
Alaska AirlinesAS396
Hawaiian AirlinesHA4968
American AirlinesAA9392
Qatar AirwaysQR8904
09:10
AirlineFlight  No
Japan AirlinesJL5441
12:50
AirlineFlight  No
United AirlinesUA1395
17:48
AirlineFlight  No
United AirlinesUA326
Austrian AirlinesOS7907
Ethiopian AirlinesET1368
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
18:15
AirlineFlight  No
Air Tahiti NuiTN2583
Alaska AirlinesAS351
Hawaiian AirlinesHA4836
American AirlinesAA7484
IberiaIB7263
Qatar AirwaysQR2990
22:09
AirlineFlight  No
United AirlinesUA2136
VIEW FLIGHTS
Saturday
00:59
AirlineFlight  No
United AirlinesUA2136
07:00
AirlineFlight  No
Air Tahiti NuiTN2395
Alaska AirlinesAS308
Hawaiian AirlinesHA4967
American AirlinesAA7576
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:45
AirlineFlight  No
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
08:45
AirlineFlight  No
United AirlinesUA1366
09:00
AirlineFlight  No
FinnairAY4588
Air Tahiti NuiTN2722
Alaska AirlinesAS396
Hawaiian AirlinesHA4968
American AirlinesAA9392
Qatar AirwaysQR8904
09:40
AirlineFlight  No
Japan AirlinesJL5441
13:01
AirlineFlight  No
United AirlinesUA1395
Ethiopian AirlinesET1368
17:48
AirlineFlight  No
United AirlinesUA326
Austrian AirlinesOS7907
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
18:15
AirlineFlight  No
Air Tahiti NuiTN2583
Alaska AirlinesAS351
Hawaiian AirlinesHA4836
American AirlinesAA7484
IberiaIB7263
Qatar AirwaysQR2990
VIEW FLIGHTS
Sunday
06:30
AirlineFlight  No
Air Tahiti NuiTN2395
Alaska AirlinesAS308
Hawaiian AirlinesHA4967
American AirlinesAA7576
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:45
AirlineFlight  No
Delta Air LinesDL1015
08:45
AirlineFlight  No
United AirlinesUA1366
09:00
AirlineFlight  No
Alaska AirlinesAS396
12:50
AirlineFlight  No
United AirlinesUA1395
17:48
AirlineFlight  No
United AirlinesUA326
18:15
AirlineFlight  No
Alaska AirlinesAS351
20:42
AirlineFlight  No
American AirlinesAA9721
22:09
AirlineFlight  No
United AirlinesUA2136
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 Delta
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 £105.97 ($143 €126.23)
£105.97
$143 | €126.23
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 £212.67 ($287 €253.35)
£212.67
$287 | €253.35
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 £78.55 ($106 €93.57)
£78.55
$106 | €93.57
Check Latest Price
1+ STOP(S)
What is the cheapest return flight from Washington IAD to Seattle SEA?
The cheapest return flight from Washington IAD to Seattle SEA is £148.20 ($200 €176.55)
£148.20
$200 | €176.55
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): Air Tahiti Nui, Alaska Airlines, American Airlines, Austrian Airlines, Avianca, Brussels Airlines, China Eastern Airlines, Copa Airlines, Delta Air Lines, Ethiopian Airlines, Finnair, Hawaiian Airlines, Iberia, Japan Airlines, Jet Linx Aviation, Korean Air, Lufthansa, Qatar Airways, United Airlines.
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.

Alternative Airports in United States with Connections from Dulles International Airport

Don't forget to book your car rental!

Search for cheap car rentals in Dulles Virginia

Useful Information about Dulles International Airport

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