Flights from Seattle Airport (SEA) to Dulles International Airport Airport (IAD)

We've found the cheapest flights to Washington

Returns from £192.90

One-way from £110.88

Airliners including NetJets, Ethiopian Airlines, Copa Airlines, Brussels Airlines, Avianca, Austrian Airlines, Starlux, Korean Air, Jet Linx Aviation, Delta Air Lines, China Eastern Airlines, Qatar Airways, Lufthansa, American Airlines, United Airlines and Alaska Airlines all offer direct flights between Seattle-Tacoma International to Washington Dulles International. The flight time is approximately 5 Hours 10 Minutes.

The cost of ticket prices to Washington Dulles International United States can vary quite considerably if you travel at certain times of the week especially at weekends. 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. If it is possible, you should book your flights 2 or more months in advance as ticket prices will be substantially lower.

On arriving at Washington Dulles International please note the time difference, the time zone at Washington Dulles International is 5.0 GMT compared to 8.0 GMT at Seattle-Tacoma International.

Below you will see all the airlines that fly from Seattle-Tacoma International (SEA) to Washington Dulles International (IAD) and the number of flights they operate each day.

Flights Chart
AirlinerMoTuWeThFrSaSuFirst FlightLast FlightFlights
Alaska Airlines333333106:3922:43VIEW FLIGHTS
United Airlines323333007:2223:20VIEW FLIGHTS
American Airlines222222106:3922:43VIEW FLIGHTS
Lufthansa222222008:0021:06VIEW FLIGHTS
Qatar Airways212121106:3922:43VIEW FLIGHTS
Starlux111111106:3922:43VIEW FLIGHTS
Korean Air111111100:2516:20VIEW FLIGHTS
Jet Linx Aviation111111106:3922:43VIEW FLIGHTS
Delta Air Lines111111100:2516:20VIEW FLIGHTS
China Eastern Airlines111111100:2516:20VIEW FLIGHTS
Copa Airlines111111021:0621:06VIEW FLIGHTS
Brussels Airlines111111008:0008:00VIEW FLIGHTS
Avianca111111008:0021:06VIEW FLIGHTS
Austrian Airlines111111008:0008:00VIEW FLIGHTS
Ethiopian Airlines101111007:2223:20VIEW FLIGHTS
NetJets010000017:3017:30VIEW FLIGHTS

Alaska Airlines is the most popular airliners who operate this route. They have around 19 a week with times that vary between 06:39 and 22:43.

To book your flight you can visit Alaska Airlines on their website alaskaair.com. You will find up to date information on availability and the 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
07:22
AirlineFlight  No
United AirlinesUA264
Ethiopian AirlinesET1369
08:00
AirlineFlight  No
United AirlinesUA688
Austrian AirlinesOS7908
LufthansaLH7485
Brussels AirlinesSN8850
16:01
AirlineFlight  No
Alaska AirlinesAS406
American AirlinesAA9349
Qatar AirwaysQR3352
16:20
AirlineFlight  No
Korean AirKE3019
China Eastern AirlinesMU8804
Delta Air LinesDL541
17:11
AirlineFlight  No
Alaska AirlinesAS737
21:06
AirlineFlight  No
United AirlinesUA2131
LufthansaLH7487
AviancaAV2029
Copa AirlinesCM2765
22:43
AirlineFlight  No
Alaska AirlinesAS367
American AirlinesAA9440
Qatar AirwaysQR2992
Jet Linx AviationJL5440
StarluxJX7072
VIEW FLIGHTS
Tuesday
08:00
AirlineFlight  No
United AirlinesUA688
Austrian AirlinesOS7908
LufthansaLH7485
AviancaAV2029
Brussels AirlinesSN8850
16:01
AirlineFlight  No
Alaska AirlinesAS406
American AirlinesAA9349
16:20
AirlineFlight  No
Korean AirKE3019
China Eastern AirlinesMU8804
Delta Air LinesDL541
17:11
AirlineFlight  No
Alaska AirlinesAS737
17:30
AirlineFlight  No
NetJetsEJA133
21:06
AirlineFlight  No
United AirlinesUA2131
LufthansaLH7487
Copa AirlinesCM2765
22:43
AirlineFlight  No
Alaska AirlinesAS367
American AirlinesAA9440
Qatar AirwaysQR2992
Jet Linx AviationJL5440
StarluxJX7072
VIEW FLIGHTS
Wednesday
08:00
AirlineFlight  No
United AirlinesUA688
Austrian AirlinesOS7908
LufthansaLH7485
Brussels AirlinesSN8850
16:01
AirlineFlight  No
Alaska AirlinesAS406
American AirlinesAA9349
Qatar AirwaysQR3352
16:20
AirlineFlight  No
Korean AirKE3019
China Eastern AirlinesMU8804
Delta Air LinesDL541
17:11
AirlineFlight  No
Alaska AirlinesAS737
21:06
AirlineFlight  No
United AirlinesUA2131
LufthansaLH7487
AviancaAV2029
Copa AirlinesCM2765
22:43
AirlineFlight  No
Alaska AirlinesAS367
American AirlinesAA9440
Qatar AirwaysQR2992
Jet Linx AviationJL5440
StarluxJX7072
23:20
AirlineFlight  No
United AirlinesUA264
Ethiopian AirlinesET1369
VIEW FLIGHTS
Thursday
08:00
AirlineFlight  No
United AirlinesUA688
Austrian AirlinesOS7908
LufthansaLH7485
AviancaAV2029
Brussels AirlinesSN8850
16:01
AirlineFlight  No
Alaska AirlinesAS406
American AirlinesAA9349
16:20
AirlineFlight  No
Korean AirKE3019
China Eastern AirlinesMU8804
Delta Air LinesDL541
17:11
AirlineFlight  No
Alaska AirlinesAS737
21:06
AirlineFlight  No
United AirlinesUA2131
LufthansaLH7487
Copa AirlinesCM2765
22:43
AirlineFlight  No
Alaska AirlinesAS367
American AirlinesAA9440
Qatar AirwaysQR2992
Jet Linx AviationJL5440
StarluxJX7072
23:20
AirlineFlight  No
United AirlinesUA264
Ethiopian AirlinesET1369
VIEW FLIGHTS
Friday
08:00
AirlineFlight  No
United AirlinesUA688
Austrian AirlinesOS7908
LufthansaLH7485
Brussels AirlinesSN8850
16:01
AirlineFlight  No
Alaska AirlinesAS406
American AirlinesAA9349
Qatar AirwaysQR3352
16:20
AirlineFlight  No
Korean AirKE3019
China Eastern AirlinesMU8804
Delta Air LinesDL541
17:11
AirlineFlight  No
Alaska AirlinesAS737
21:06
AirlineFlight  No
United AirlinesUA2131
LufthansaLH7487
AviancaAV2029
Copa AirlinesCM2765
22:43
AirlineFlight  No
Alaska AirlinesAS367
American AirlinesAA9440
Qatar AirwaysQR2992
Jet Linx AviationJL5440
StarluxJX7072
23:20
AirlineFlight  No
United AirlinesUA264
Ethiopian AirlinesET1369
VIEW FLIGHTS
Saturday
06:39
AirlineFlight  No
American AirlinesAA9440
Qatar AirwaysQR2992
Jet Linx AviationJL5440
StarluxJX7072
07:22
AirlineFlight  No
United AirlinesUA264
Ethiopian AirlinesET1369
08:00
AirlineFlight  No
United AirlinesUA688
Austrian AirlinesOS7908
LufthansaLH7485
AviancaAV2029
Brussels AirlinesSN8850
16:01
AirlineFlight  No
Alaska AirlinesAS406
American AirlinesAA9349
16:20
AirlineFlight  No
Korean AirKE3019
China Eastern AirlinesMU8804
Delta Air LinesDL541
17:11
AirlineFlight  No
Alaska AirlinesAS737
21:06
AirlineFlight  No
United AirlinesUA2131
LufthansaLH7487
Copa AirlinesCM2765
22:43
AirlineFlight  No
Alaska AirlinesAS367
VIEW FLIGHTS
Sunday
00:25
AirlineFlight  No
Korean AirKE3019
China Eastern AirlinesMU8804
Delta Air LinesDL541
06:39
AirlineFlight  No
Alaska AirlinesAS367
American AirlinesAA9440
Qatar AirwaysQR2992
Jet Linx AviationJL5440
StarluxJX7072
VIEW FLIGHTS

Other routes are also possible. Flying from a different airport may offer more convenient flight times, so below we have we have put a list of other routes that may well be suitable.

Alternative Direct Routes
RouteStopsDistanceFlying Time
Seattle Boeing Field King County to Dulles 05 Hours 10 Minutes
Richmond Vancouver to Dulles 05 Hours 14 Minutes

A useful tip to save money to exchange money before you go, or go to a bureau de change outside of the airport when you arrive. The exchange rate within the airport are not very good so try to avoid changing money their if you can.

Planning a trip? Save money on car hire by booking in advance

Search for the cheapest car rental deals in Dulles Virginia, United States

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

DIRECT Delta
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 £110.88 ($146 €128.70)
£110.88
$146 | €128.70
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 £192.90 ($254 €223.90)
£192.90
$254 | €223.90
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 £78.98 ($104 €91.68)
£78.98
$104 | €91.68
Check Latest Price
1+ STOP(S)
What is the cheapest return flight from Seattle SEA to Washington IAD?
The cheapest return flight from Seattle SEA to Washington IAD is £187.58 ($247 €217.73)
£187.58
$247 | €217.73
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, Copa Airlines, Delta Air Lines, Ethiopian Airlines, Jet Linx Aviation, Korean Air, Lufthansa, NetJets, 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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Planning a trip? Save money on car rental by booking in advance

Search for the cheapest car hire deals at Dulles International Airport

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