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

We've found the cheapest flights to Seattle

Returns from £189.64

One-way from £109.32

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
Qatar Airways333333106:0020:32VIEW FLIGHTS
American Airlines333333106:0020:32VIEW FLIGHTS
Alaska Airlines333333106:0017:38VIEW FLIGHTS
United Airlines322332009:0017:55VIEW FLIGHTS
Jet Linx Aviation111111106:0006:00VIEW FLIGHTS
Delta Air Lines111111107:0007:00VIEW FLIGHTS
Starlux111111020:2920:32VIEW FLIGHTS
Korean Air111111007:0007:00VIEW FLIGHTS
Iberia111111020:2920:32VIEW FLIGHTS
China Eastern Airlines111111007:0007:00VIEW FLIGHTS
Ethiopian Airlines101101013:1513:15VIEW FLIGHTS
Copa Airlines101101020:4620:46VIEW FLIGHTS
Avianca101101020:4620:46VIEW FLIGHTS
Lufthansa001100020:4620:46VIEW FLIGHTS
Finnair010010009:0009:00VIEW FLIGHTS
Austrian Airlines001100020:4620:46VIEW FLIGHTS
Brussels Airlines000100020:4620:46VIEW FLIGHTS

The greatest amount of direct flights offered from Washington Dulles International to Seattle-Tacoma International United States are by Qatar Airways with around 19 flights a week. The earliest flight is available at 06:00 and the latest flights at 20:32 with the most popular flight number being QR2997, QR8811 and QR8904.

You can visit Qatar Airways at qatarairways.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
06:00
AirlineFlightNo
Alaska AirlinesAS351
American AirlinesAA7484
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:00
AirlineFlightNo
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
09:00
AirlineFlightNo
United AirlinesUA2101
Alaska AirlinesAS375
American AirlinesAA9392
Qatar AirwaysQR8904
13:15
AirlineFlightNo
United AirlinesUA2241
Ethiopian AirlinesET1368
17:35
AirlineFlightNo
Alaska AirlinesAS737
17:55
AirlineFlightNo
United AirlinesUA326
20:29
AirlineFlightNo
American AirlinesAA7585
IberiaIB7260
Qatar AirwaysQR2997
StarluxJX7073
20:46
AirlineFlightNo
AviancaAV2028
Copa AirlinesCM2766
VIEW FLIGHTS
Tuesday
06:00
AirlineFlightNo
Alaska AirlinesAS351
American AirlinesAA7484
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:00
AirlineFlightNo
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
09:00
AirlineFlightNo
FinnairAY4588
Alaska AirlinesAS375
American AirlinesAA9392
Qatar AirwaysQR8904
13:15
AirlineFlightNo
United AirlinesUA2241
17:35
AirlineFlightNo
Alaska AirlinesAS737
17:55
AirlineFlightNo
United AirlinesUA326
20:29
AirlineFlightNo
American AirlinesAA7585
IberiaIB7260
Qatar AirwaysQR2997
StarluxJX7073
VIEW FLIGHTS
Wednesday
06:00
AirlineFlightNo
Alaska AirlinesAS351
American AirlinesAA7484
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:00
AirlineFlightNo
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
09:00
AirlineFlightNo
Alaska AirlinesAS375
American AirlinesAA9392
Qatar AirwaysQR8904
13:15
AirlineFlightNo
United AirlinesUA2241
Ethiopian AirlinesET1368
17:38
AirlineFlightNo
Alaska AirlinesAS737
17:55
AirlineFlightNo
United AirlinesUA326
20:32
AirlineFlightNo
American AirlinesAA7585
IberiaIB7260
Qatar AirwaysQR2997
StarluxJX7073
20:46
AirlineFlightNo
Austrian AirlinesOS7907
LufthansaLH7484
AviancaAV2028
Copa AirlinesCM2766
VIEW FLIGHTS
Thursday
06:00
AirlineFlightNo
Alaska AirlinesAS351
American AirlinesAA7484
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:00
AirlineFlightNo
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
09:00
AirlineFlightNo
United AirlinesUA2101
Alaska AirlinesAS375
American AirlinesAA9392
Qatar AirwaysQR8904
13:15
AirlineFlightNo
United AirlinesUA2241
Ethiopian AirlinesET1368
17:35
AirlineFlightNo
Alaska AirlinesAS737
17:55
AirlineFlightNo
United AirlinesUA326
20:29
AirlineFlightNo
American AirlinesAA7585
IberiaIB7260
Qatar AirwaysQR2997
StarluxJX7073
20:46
AirlineFlightNo
Austrian AirlinesOS7907
LufthansaLH7484
AviancaAV2028
Brussels AirlinesSN8849
Copa AirlinesCM2766
VIEW FLIGHTS
Friday
06:00
AirlineFlightNo
Alaska AirlinesAS351
American AirlinesAA7484
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:00
AirlineFlightNo
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
09:00
AirlineFlightNo
FinnairAY4588
United AirlinesUA2101
Alaska AirlinesAS375
American AirlinesAA9392
Qatar AirwaysQR8904
13:15
AirlineFlightNo
United AirlinesUA2241
17:35
AirlineFlightNo
Alaska AirlinesAS737
17:55
AirlineFlightNo
United AirlinesUA326
20:29
AirlineFlightNo
American AirlinesAA7585
IberiaIB7295
Qatar AirwaysQR2997
StarluxJX7073
VIEW FLIGHTS
Saturday
06:00
AirlineFlightNo
Alaska AirlinesAS351
American AirlinesAA7484
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:00
AirlineFlightNo
Korean AirKE3182
China Eastern AirlinesMU8778
Delta Air LinesDL1015
09:00
AirlineFlightNo
United AirlinesUA2101
Alaska AirlinesAS375
American AirlinesAA9392
AviancaAV2028
Copa AirlinesCM2766
Qatar AirwaysQR8904
13:15
AirlineFlightNo
United AirlinesUA2241
Ethiopian AirlinesET1368
17:38
AirlineFlightNo
Alaska AirlinesAS737
20:32
AirlineFlightNo
American AirlinesAA7585
IberiaIB7260
Qatar AirwaysQR2997
StarluxJX7073
VIEW FLIGHTS
Sunday
06:00
AirlineFlightNo
Alaska AirlinesAS351
American AirlinesAA7484
Qatar AirwaysQR8811
Jet Linx AviationJL5441
07:00
AirlineFlightNo
Delta Air LinesDL1015
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 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 £109.32 ($147 €126.38)
£109.32
$147 | €126.38
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 £189.64 ($255 €219.23)
£189.64
$255 | €219.23
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 £81.06 ($109 €93.71)
£81.06
$109 | €93.71
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 £169.56 ($228 €196.02)
£169.56
$228 | €196.02
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, Finnair, Iberia, Jet Linx Aviation, Korean Air, Lufthansa, Qatar Airways, Starlux, 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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