Flights from Seattle Airport SEA to Washington Airport IAD

We've found the cheapest flights to Washington

Returns from £131.16

One-way from £82.99

Flights are available to Seattle-Tacoma International from Washington Dulles International with a choice of 15 airliners, Ethiopian Airlines, Avianca, Hawaiian Airlines, United Airlines, Starlux, Lufthansa, Korean Air, Delta Air Lines, China Eastern Airlines, Brussels Airlines, Austrian Airlines, Jet Linx Aviation, Qatar Airways, American Airlines and Alaska Airlines. The journey time flying from Seattle-Tacoma International to Washington Dulles International United States is around 5 Hours 10 Minutes. With the distance covered being 3,701 Km (2,300 Miles). The airport code for Seattle-Tacoma International is SEA and for Washington Dulles International it is IAD.

The cost of your trip (flights) can change at weekends and at certain times of the day (if there is a choice of flights to your chosen destination. Washington Dulles 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 Seattle-Tacoma International. Flights to Washington Dulles International United States normally increase in price the nearer the journey date, so it is worth trying to book your tickets in advance if you can.

The time zone at Washington Dulles International is 5.0 GMT compared to 8.0 GMT at Seattle-Tacoma International so bare this in mind is you need to make travel arrangements when you arrive at Washington Dulles International.

The table below shows the amount of daily flights in operation from Seattle-Tacoma International (SEA) to Washington Dulles International (IAD).

Flights Chart
AirlinerMoTuWeThFrSaSuFirst FlightLast FlightFlights
Alaska Airlines223333100:0921:41VIEW FLIGHTS
American Airlines221222100:0910:09VIEW FLIGHTS
Qatar Airways221111005:4010:09VIEW FLIGHTS
Jet Linx Aviation111111100:0905:50VIEW FLIGHTS
United Airlines111111008:0008:00VIEW FLIGHTS
Starlux111111005:4005:50VIEW FLIGHTS
Lufthansa111111008:0008:00VIEW FLIGHTS
Korean Air111111023:5523:55VIEW FLIGHTS
Delta Air Lines111111015:5915:59VIEW FLIGHTS
China Eastern Airlines111111023:5523:55VIEW FLIGHTS
Brussels Airlines111111008:0008:00VIEW FLIGHTS
Austrian Airlines111111008:0008:00VIEW FLIGHTS
Hawaiian Airlines221000005:4010:09VIEW FLIGHTS
Ethiopian Airlines101001008:0008:00VIEW FLIGHTS
Avianca010101008:0008:00VIEW FLIGHTS

Alaska Airlines offer the most direct flights from Seattle-Tacoma International to Washington Dulles International with an average of 17 flights a week. The earliest flights are operated at 00:09 and the latest flights operated at 21:41 and the most common flight numbers are AS348, AS367 and AS737

Contact Alaska Airlines at alaskaair.com to booking a flight or find up to date information on the flight times.

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
05:40
AirlineFlightNo
Hawaiian AirlinesHA6718
American AirlinesAA9440
Qatar AirwaysQR2068
Jet Linx AviationJL5440
StarluxJX7072
08:00
AirlineFlightNo
United AirlinesUA2861
Austrian AirlinesOS7908
Ethiopian AirlinesET1369
LufthansaLH7485
Brussels AirlinesSN8850
10:09
AirlineFlightNo
Alaska AirlinesAS737
Hawaiian AirlinesHA6724
American AirlinesAA9349
Qatar AirwaysQR3383
15:59
AirlineFlightNo
Delta Air LinesDL541
21:40
AirlineFlightNo
Alaska AirlinesAS367
23:55
AirlineFlightNo
Korean AirKE3019
China Eastern AirlinesMU8804
VIEW FLIGHTS
Tuesday
05:40
AirlineFlightNo
Hawaiian AirlinesHA6718
American AirlinesAA9440
Qatar AirwaysQR2068
Jet Linx AviationJL5440
StarluxJX7072
08:00
AirlineFlightNo
United AirlinesUA2861
Austrian AirlinesOS7908
LufthansaLH7485
AviancaAV2029
Brussels AirlinesSN8850
10:09
AirlineFlightNo
Alaska AirlinesAS737
Hawaiian AirlinesHA6724
American AirlinesAA9349
Qatar AirwaysQR3383
15:59
AirlineFlightNo
Delta Air LinesDL541
21:40
AirlineFlightNo
Alaska AirlinesAS367
23:55
AirlineFlightNo
Korean AirKE3019
China Eastern AirlinesMU8804
VIEW FLIGHTS
Wednesday
05:40
AirlineFlightNo
Hawaiian AirlinesHA6718
American AirlinesAA9440
Qatar AirwaysQR2068
Jet Linx AviationJL5440
StarluxJX7072
08:00
AirlineFlightNo
United AirlinesUA2861
Austrian AirlinesOS7908
Ethiopian AirlinesET1369
LufthansaLH7485
Brussels AirlinesSN8850
15:55
AirlineFlightNo
Alaska AirlinesAS348
15:59
AirlineFlightNo
Delta Air LinesDL541
18:20
AirlineFlightNo
Alaska AirlinesAS737
21:41
AirlineFlightNo
Alaska AirlinesAS367
23:55
AirlineFlightNo
Korean AirKE3019
China Eastern AirlinesMU8804
VIEW FLIGHTS
Thursday
00:09
AirlineFlightNo
American AirlinesAA9375
05:50
AirlineFlightNo
American AirlinesAA9440
Qatar AirwaysQR2150
Jet Linx AviationJL5440
StarluxJX7072
08:00
AirlineFlightNo
United AirlinesUA2861
Austrian AirlinesOS7908
LufthansaLH7485
AviancaAV2029
Brussels AirlinesSN8850
15:55
AirlineFlightNo
Alaska AirlinesAS348
15:59
AirlineFlightNo
Delta Air LinesDL541
18:20
AirlineFlightNo
Alaska AirlinesAS737
21:41
AirlineFlightNo
Alaska AirlinesAS367
23:55
AirlineFlightNo
Korean AirKE3019
China Eastern AirlinesMU8804
VIEW FLIGHTS
Friday
00:09
AirlineFlightNo
American AirlinesAA9375
05:50
AirlineFlightNo
American AirlinesAA9440
Qatar AirwaysQR2150
Jet Linx AviationJL5440
StarluxJX7072
08:00
AirlineFlightNo
United AirlinesUA2861
Austrian AirlinesOS7908
LufthansaLH7485
Brussels AirlinesSN8850
15:55
AirlineFlightNo
Alaska AirlinesAS348
15:59
AirlineFlightNo
Delta Air LinesDL541
18:20
AirlineFlightNo
Alaska AirlinesAS737
21:41
AirlineFlightNo
Alaska AirlinesAS367
23:55
AirlineFlightNo
Korean AirKE3019
China Eastern AirlinesMU8804
VIEW FLIGHTS
Saturday
00:09
AirlineFlightNo
American AirlinesAA9375
05:50
AirlineFlightNo
Alaska AirlinesAS367
American AirlinesAA9440
Qatar AirwaysQR2150
Jet Linx AviationJL5440
StarluxJX7072
08:00
AirlineFlightNo
United AirlinesUA2861
Austrian AirlinesOS7908
Ethiopian AirlinesET1369
LufthansaLH7485
AviancaAV2029
Brussels AirlinesSN8850
15:55
AirlineFlightNo
Alaska AirlinesAS348
15:59
AirlineFlightNo
Delta Air LinesDL541
18:20
AirlineFlightNo
Alaska AirlinesAS737
23:55
AirlineFlightNo
Korean AirKE3019
China Eastern AirlinesMU8804
VIEW FLIGHTS
Sunday
00:09
AirlineFlightNo
Alaska AirlinesAS348
American AirlinesAA9375
Jet Linx AviationJL5440
VIEW FLIGHTS

You may instead fly from Seattle-Tacoma International and arrive at Washington Dulles International by an alternative airport or airports. The summary of this is in the table below.

Alternative Direct Routes
RouteStopsDistanceFlying Time
Seattle Boeing Field King County to Dulles03,701 km (2,299 miles)5 Hours 10 Minutes

Remember to have some local currency before travelling to Washington Dulles International as there may not be a bureau de change open upon your arrival.

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

DIRECT Alaska Airlines
What is the cheapest direct flight one way from Seattle SEA to Washington IAD?
The cheapest direct flight one way from Seattle SEA to Washington IAD is £82.99 ($112 €95.54)
£82.99
$112 | €95.54
Check Latest Price
DIRECT Delta
What is the cheapest direct return flight from Seattle SEA to Washington IAD?
The cheapest direct return flight from Seattle SEA to Washington IAD is £131.16 ($177 €150.99)
£131.16
$177 | €150.99
Check Latest Price
1+ STOP(S)
What is the cheapest flight one way from Seattle SEA to Washington IAD?
The cheapest flight one way from Seattle SEA to Washington IAD is £73.36 ($99 €84.45)
£73.36
$99 | €84.45
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 SEA to IAD

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

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

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