Flights from Washington Airport (IAD) to Seattle Airport Airport (SEA)

We've found the cheapest flights to Seattle

Returns from £217.48

One-way from £101.55

Multiple companies offer flights from Washington Dulles International to Seattle-Tacoma International. The journey time flying from Washington Dulles International to Seattle-Tacoma International United States is around 5 Hours 10 Minutes. With the distance covered being 3,701 Km (2,300 Miles). The airport code for Washington Dulles International is IAD and for Seattle-Tacoma International it is SEA.

The price of the flight is dependent on the time of the day you fly (if there is a choice) and the day of the week with weekends being normally a higher price. Seattle-Tacoma International United States flights may be normally booked months in advance and this may be the best option if you intend to get the best prices from Washington Dulles International. Our recommendation is to book well in advance if you are looking to get the best possible prices.

There is a time difference of 8.0 GMT at Seattle-Tacoma International United States, so remember to alter your watch to the correct time upon your arrival.

The table below displays the numbers of daily flights from Washington Dulles International (IAD) to Seattle-Tacoma International (SEA) and the relevant airlines that fly.

Flights Chart
AirlinerMoTuWeThFrSaSuFirst FlightLast FlightFlights
Alaska Airlines211221207:0015:54VIEW FLIGHTS
Hawaiian Airlines211221107:0015:54VIEW FLIGHTS
Air Tahiti Nui211221107:0015:54VIEW FLIGHTS
Qatar Airways111121107:0015:54VIEW FLIGHTS
United Airlines111111117:1517:15VIEW FLIGHTS
Korean Air112111010:0018:20VIEW FLIGHTS
Jet Linx Aviation111111107:0007:00VIEW FLIGHTS
Delta Air Lines111111118:2018:20VIEW FLIGHTS
Lufthansa111111017:1517:15VIEW FLIGHTS
KLM111111018:2018:20VIEW FLIGHTS
Ethiopian Airlines111111017:1517:15VIEW FLIGHTS
Copa Airlines111111017:1517:15VIEW FLIGHTS
China Eastern Airlines111111018:2018:20VIEW FLIGHTS
Brussels Airlines111111017:1517:15VIEW FLIGHTS
Avianca111111017:1517:15VIEW FLIGHTS
Austrian Airlines010111017:1517:15VIEW FLIGHTS

Currently Alaska Airlines offer the most direct flights from to Seattle-Tacoma International from Washington Dulles International with only 1 flight weekly. The time of the departure is 07:00

You can visit Alaska Airlines at alaskaair.com website for late minute deals and up to date information.

Below you can see the times of all flights. These flight times do vary so we recommend you look on the appropriate airline website for accurate information for the dates you are departing.

Flights Time In WeekDays
DayFlight TimesFlights
Monday
07:00
AirlineFlightNo
Air Tahiti NuiTN2395
Alaska AirlinesAS499
Hawaiian AirlinesHA4890
Qatar AirwaysQR8811
Jet Linx AviationJL5441
15:54
AirlineFlightNo
Air Tahiti NuiTN2465
Alaska AirlinesAS351
Hawaiian AirlinesHA4967
17:15
AirlineFlightNo
United AirlinesUA326
Ethiopian AirlinesET1368
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
18:20
AirlineFlightNo
Korean AirKE3026
China Eastern AirlinesMU8778
KLMKL7391
Delta Air LinesDL555
VIEW FLIGHTS
Tuesday
07:00
AirlineFlightNo
Air Tahiti NuiTN2395
Alaska AirlinesAS499
Hawaiian AirlinesHA4890
Qatar AirwaysQR8811
Jet Linx AviationJL5441
17:15
AirlineFlightNo
United AirlinesUA326
Austrian AirlinesOS7907
Ethiopian AirlinesET1368
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
18:20
AirlineFlightNo
Korean AirKE3026
China Eastern AirlinesMU8778
KLMKL7391
Delta Air LinesDL555
VIEW FLIGHTS
Wednesday
07:00
AirlineFlightNo
Air Tahiti NuiTN2395
Alaska AirlinesAS499
Hawaiian AirlinesHA4890
Qatar AirwaysQR8811
Jet Linx AviationJL5441
10:00
AirlineFlightNo
Korean AirKE2454
17:15
AirlineFlightNo
United AirlinesUA326
Ethiopian AirlinesET1368
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
18:20
AirlineFlightNo
Korean AirKE3026
China Eastern AirlinesMU8778
KLMKL7391
Delta Air LinesDL555
VIEW FLIGHTS
Thursday
07:00
AirlineFlightNo
Air Tahiti NuiTN2395
Alaska AirlinesAS499
Hawaiian AirlinesHA4890
Qatar AirwaysQR8811
Jet Linx AviationJL5441
15:54
AirlineFlightNo
Air Tahiti NuiTN2465
Alaska AirlinesAS351
Hawaiian AirlinesHA4967
17:15
AirlineFlightNo
United AirlinesUA326
Austrian AirlinesOS7907
Ethiopian AirlinesET1368
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
18:20
AirlineFlightNo
Korean AirKE3026
China Eastern AirlinesMU8778
KLMKL7391
Delta Air LinesDL555
VIEW FLIGHTS
Friday
07:00
AirlineFlightNo
Air Tahiti NuiTN2395
Alaska AirlinesAS499
Hawaiian AirlinesHA4890
Qatar AirwaysQR8811
Jet Linx AviationJL5441
15:54
AirlineFlightNo
Air Tahiti NuiTN2465
Alaska AirlinesAS351
Hawaiian AirlinesHA4967
Qatar AirwaysQR2990
17:15
AirlineFlightNo
United AirlinesUA326
Austrian AirlinesOS7907
Ethiopian AirlinesET1368
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
18:20
AirlineFlightNo
Korean AirKE3026
China Eastern AirlinesMU8778
KLMKL7391
Delta Air LinesDL555
VIEW FLIGHTS
Saturday
07:00
AirlineFlightNo
Air Tahiti NuiTN2395
Alaska AirlinesAS499
Hawaiian AirlinesHA4890
Qatar AirwaysQR8811
Jet Linx AviationJL5441
17:15
AirlineFlightNo
United AirlinesUA326
Austrian AirlinesOS7907
Ethiopian AirlinesET1368
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
18:20
AirlineFlightNo
Korean AirKE3026
China Eastern AirlinesMU8778
KLMKL7391
Delta Air LinesDL555
VIEW FLIGHTS
Sunday
07:00
AirlineFlightNo
Air Tahiti NuiTN2395
Alaska AirlinesAS499
Hawaiian AirlinesHA4890
Qatar AirwaysQR8811
Jet Linx AviationJL5441
15:54
AirlineFlightNo
Alaska AirlinesAS351
17:15
AirlineFlightNo
United AirlinesUA326
18:20
AirlineFlightNo
Delta Air LinesDL555
VIEW FLIGHTS

Instead of flying directly from Washington Dulles International and arrive at Seattle-Tacoma International, you may arrive Seattle-Tacoma International by another airport. Please see chart below for a list of these.

Alternative Direct Routes
RouteStopsDistanceFlying Time
Baltimore Washington Thurgood Marshall to Seattle 03,748 km (2,329 miles)5 Hours 13 Minutes
Washington Ronald Reagan Washington National to Seattle 03,738 km (2,323 miles)5 Hours 12 Minutes
Philadelphia to Seattle 03,817 km (2,372 miles)5 Hours 18 Minutes

Before departing Washington Dulles International please check that you are holding a valid passport.

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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 £101.55 ($127 €122.21)
£101.55
$127 | €122.21
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 £217.48 ($272 €261.73)
£217.48
$272 | €261.73
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 £211.89 ($265 €254)
£211.89
$265 | €254
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, Hawaiian Airlines, Jet Linx Aviation, KLM, 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.

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