Flights from Washington Airport IAD to Seattle Airport SEA

We've found the cheapest flights to Seattle

Returns from £213.54

One-way from £99.71

If it is your first time travelling to Seattle-Tacoma International then check out the airliners Flexjet, Austrian Airlines, Singapore Airlines, Korean Air, KLM, Jet Linx Aviation, Lufthansa, Ethiopian Airlines, Brussels Airlines, Japan Airlines, Copa Airlines, Avianca, Air Tahiti Nui, China Eastern Airlines, Qatar Airways, Hawaiian Airlines, Delta Air Lines, United 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
United Airlines222122208:3517:15VIEW FLIGHTS
Alaska Airlines222122207:0219:06VIEW FLIGHTS
Qatar Airways222122107:0219:06VIEW FLIGHTS
Hawaiian Airlines222122107:0219:06VIEW FLIGHTS
Delta Air Lines222112207:1518:25VIEW FLIGHTS
China Eastern Airlines222112107:1518:25VIEW FLIGHTS
Air Tahiti Nui111111107:0207:02VIEW FLIGHTS
Japan Airlines111111007:0210:00VIEW FLIGHTS
Copa Airlines111111008:3517:15VIEW FLIGHTS
Avianca111111008:3517:15VIEW FLIGHTS
Lufthansa111011017:1517:15VIEW FLIGHTS
Ethiopian Airlines111011017:1517:15VIEW FLIGHTS
Brussels Airlines111011017:1517:15VIEW FLIGHTS
Singapore Airlines101011019:0619:06VIEW FLIGHTS
Korean Air111001018:2518:25VIEW FLIGHTS
KLM111001018:2518:25VIEW FLIGHTS
Jet Linx Aviation100101107:0207:02VIEW FLIGHTS
Austrian Airlines010011017:1517:15VIEW FLIGHTS
Flexjet0000010VIEW FLIGHTS

Flights from Washington Dulles International to Seattle-Tacoma International are very limited. Only United Airlines operate flights, of which there is only 1 per week. The time of the departure for this flight is 08:35

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
07:02
AirlineFlight  No
Air Tahiti NuiTN2395
Alaska AirlinesAS499
Hawaiian AirlinesHA4913
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:15
AirlineFlight  No
China Eastern AirlinesMU8821
Delta Air LinesDL1015
08:35
AirlineFlight  No
United AirlinesUA1964
10:00
AirlineFlight  No
Japan AirlinesJL5441
17:15
AirlineFlight  No
United AirlinesUA326
Ethiopian AirlinesET1368
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
18:25
AirlineFlight  No
Korean AirKE3026
China Eastern AirlinesMU8778
KLMKL7391
Delta Air LinesDL508
19:06
AirlineFlight  No
Singapore AirlinesSQ1235
Alaska AirlinesAS406
Hawaiian AirlinesHA4969
Qatar AirwaysQR2990
VIEW FLIGHTS
Tuesday
07:02
AirlineFlight  No
Air Tahiti NuiTN2395
Alaska AirlinesAS499
Hawaiian AirlinesHA4913
Japan AirlinesJL5441
Qatar AirwaysQR8811
07:15
AirlineFlight  No
China Eastern AirlinesMU8821
Delta Air LinesDL1015
08:35
AirlineFlight  No
United AirlinesUA1964
17:15
AirlineFlight  No
United AirlinesUA326
Austrian AirlinesOS7907
Ethiopian AirlinesET1368
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
18:25
AirlineFlight  No
Korean AirKE3026
China Eastern AirlinesMU8778
KLMKL7391
Delta Air LinesDL508
19:06
AirlineFlight  No
Alaska AirlinesAS406
Hawaiian AirlinesHA4969
Qatar AirwaysQR2990
VIEW FLIGHTS
Wednesday
07:02
AirlineFlight  No
Air Tahiti NuiTN2395
Alaska AirlinesAS499
Hawaiian AirlinesHA4913
Japan AirlinesJL5441
Qatar AirwaysQR8811
07:15
AirlineFlight  No
China Eastern AirlinesMU8821
Delta Air LinesDL1015
08:35
AirlineFlight  No
United AirlinesUA1964
17:15
AirlineFlight  No
United AirlinesUA326
Ethiopian AirlinesET1368
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
18:25
AirlineFlight  No
Korean AirKE3026
China Eastern AirlinesMU8778
KLMKL7391
Delta Air LinesDL508
19:06
AirlineFlight  No
Singapore AirlinesSQ1235
Alaska AirlinesAS406
Hawaiian AirlinesHA4969
Qatar AirwaysQR2990
VIEW FLIGHTS
Thursday
07:02
AirlineFlight  No
Air Tahiti NuiTN2395
Alaska AirlinesAS499
Hawaiian AirlinesHA4913
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:15
AirlineFlight  No
China Eastern AirlinesMU8821
Delta Air LinesDL1015
08:35
AirlineFlight  No
United AirlinesUA1964
AviancaAV2028
Copa AirlinesCM2766
10:00
AirlineFlight  No
Japan AirlinesJL5441
VIEW FLIGHTS
Friday
07:02
AirlineFlight  No
Air Tahiti NuiTN2395
Alaska AirlinesAS499
Hawaiian AirlinesHA4913
Japan AirlinesJL5441
Qatar AirwaysQR8811
07:15
AirlineFlight  No
China Eastern AirlinesMU8821
Delta Air LinesDL1015
08:35
AirlineFlight  No
United AirlinesUA1964
17:15
AirlineFlight  No
United AirlinesUA326
Austrian AirlinesOS7907
Ethiopian AirlinesET1368
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
19:06
AirlineFlight  No
Singapore AirlinesSQ1235
Alaska AirlinesAS406
Hawaiian AirlinesHA4969
Qatar AirwaysQR2990
VIEW FLIGHTS
Saturday
07:02
AirlineFlight  No
Air Tahiti NuiTN2395
Alaska AirlinesAS499
Hawaiian AirlinesHA4913
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:15
AirlineFlight  No
China Eastern AirlinesMU8821
Delta Air LinesDL1015
08:35
AirlineFlight  No
United AirlinesUA1964
09:30
AirlineFlight  No
FlexjetLXJ594
10:00
AirlineFlight  No
Japan AirlinesJL5441
17:15
AirlineFlight  No
United AirlinesUA326
Austrian AirlinesOS7907
Ethiopian AirlinesET1368
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
18:25
AirlineFlight  No
Korean AirKE3026
China Eastern AirlinesMU8778
KLMKL7391
Delta Air LinesDL508
19:06
AirlineFlight  No
Singapore AirlinesSQ1235
Alaska AirlinesAS406
Hawaiian AirlinesHA4969
Qatar AirwaysQR2990
VIEW FLIGHTS
Sunday
07:02
AirlineFlight  No
Air Tahiti NuiTN2395
Alaska AirlinesAS499
Hawaiian AirlinesHA4913
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:15
AirlineFlight  No
China Eastern AirlinesMU8821
Delta Air LinesDL1015
08:35
AirlineFlight  No
United AirlinesUA1964
17:15
AirlineFlight  No
United AirlinesUA326
18:25
AirlineFlight  No
Delta Air LinesDL508
19:06
AirlineFlight  No
Alaska AirlinesAS406
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 United
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 £99.71 ($127 €120.05)
£99.71
$127 | €120.05
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 £213.54 ($272 €257.11)
£213.54
$272 | €257.11
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 £208.05 ($265 €250.49)
£208.05
$265 | €250.49
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, Austrian Airlines, Avianca, Brussels Airlines, China Eastern Airlines, Copa Airlines, Delta Air Lines, Ethiopian Airlines, Flexjet, Hawaiian Airlines, Japan Airlines, Jet Linx Aviation, KLM, Korean Air, Lufthansa, Qatar Airways, Singapore Airlines, 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.

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