Flights from Seattle Airport SEA to Washington Airport IAD

We've found the cheapest flights to Washington

Returns from £217.90

One-way from £108.21

Flights are available to Seattle-Tacoma International from Washington Dulles International with a choice of 18 airliners, Singapore Airlines, Japan Airlines, Ethiopian Airlines, Copa Airlines, Brussels Airlines, Avianca, Austrian Airlines, All Nippon Airways, Korean Air, Delta Air Lines, China Eastern Airlines, Lufthansa, Qatar Airways, Hawaiian Airlines, American Airlines, Air Tahiti Nui, Alaska Airlines and United 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
United Airlines454444406:0223:20VIEW FLIGHTS
Alaska Airlines333333307:2723:30VIEW FLIGHTS
Qatar Airways333332007:2723:59VIEW FLIGHTS
Hawaiian Airlines333332007:2723:59VIEW FLIGHTS
American Airlines333332007:2723:59VIEW FLIGHTS
Air Tahiti Nui333332007:2723:59VIEW FLIGHTS
Lufthansa222222008:0016:11VIEW FLIGHTS
Korean Air111111105:5921:55VIEW FLIGHTS
Delta Air Lines111111121:5521:55VIEW FLIGHTS
China Eastern Airlines111111105:5921:55VIEW FLIGHTS
Ethiopian Airlines111110106:0222:05VIEW FLIGHTS
Copa Airlines111110106:0222:05VIEW FLIGHTS
Brussels Airlines111111008:0016:11VIEW FLIGHTS
Avianca111111013:0013:00VIEW FLIGHTS
Austrian Airlines111111008:0016:11VIEW FLIGHTS
All Nippon Airways111110106:0222:05VIEW FLIGHTS
Japan Airlines111110023:3023:59VIEW FLIGHTS
Singapore Airlines010111023:5923:59VIEW FLIGHTS

United Airlines offer the most direct flights from Seattle-Tacoma International to Washington Dulles International with an average of 29 flights a week. The earliest flights are operated at 06:02 and the latest flights operated at 23:20 and the most common flight numbers are UA1873, UA2019, UA2211 and UA2275

Contact United Airlines at united.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
05:59
AirlineFlightNo
Korean AirKE3019
China Eastern AirlinesMU8804
08:00
AirlineFlightNo
United AirlinesUA1873
09:15
AirlineFlightNo
Air Tahiti NuiTN2556
Alaska AirlinesAS406
Hawaiian AirlinesHA6724
American AirlinesAA9349
Qatar AirwaysQR2990
13:00
AirlineFlightNo
United AirlinesUA2275
LufthansaLH7487
AviancaAV2029
15:59
AirlineFlightNo
Alaska AirlinesAS348
16:11
AirlineFlightNo
Austrian AirlinesOS7908
LufthansaLH7485
Brussels AirlinesSN8850
21:55
AirlineFlightNo
Delta Air LinesDL541
22:05
AirlineFlightNo
United AirlinesUA2402
Ethiopian AirlinesET1369
All Nippon AirwaysNH7282
Copa AirlinesCM2765
23:20
AirlineFlightNo
United AirlinesUA2019
23:30
AirlineFlightNo
Air Tahiti NuiTN2791
Alaska AirlinesAS367
Hawaiian AirlinesHA6718
American AirlinesAA9440
Japan AirlinesJL5440
Qatar AirwaysQR2049
23:59
AirlineFlightNo
Air Tahiti NuiTN2543
Hawaiian AirlinesHA6717
American AirlinesAA9375
Qatar AirwaysQR3352
VIEW FLIGHTS
Tuesday
07:17
AirlineFlightNo
United AirlinesUA2019
08:00
AirlineFlightNo
United AirlinesUA1873
Austrian AirlinesOS7908
LufthansaLH7485
Brussels AirlinesSN8850
09:15
AirlineFlightNo
Air Tahiti NuiTN2556
Alaska AirlinesAS406
Hawaiian AirlinesHA6724
American AirlinesAA9349
Qatar AirwaysQR2990
13:00
AirlineFlightNo
United AirlinesUA2275
LufthansaLH7487
AviancaAV2029
15:59
AirlineFlightNo
Alaska AirlinesAS348
21:55
AirlineFlightNo
Korean AirKE3019
China Eastern AirlinesMU8804
Delta Air LinesDL541
22:05
AirlineFlightNo
United AirlinesUA2402
Ethiopian AirlinesET1369
All Nippon AirwaysNH7282
Copa AirlinesCM2765
23:20
AirlineFlightNo
United AirlinesUA2211
23:30
AirlineFlightNo
Air Tahiti NuiTN2791
Alaska AirlinesAS367
Hawaiian AirlinesHA6718
American AirlinesAA9440
Japan AirlinesJL5440
Qatar AirwaysQR2049
23:59
AirlineFlightNo
Air Tahiti NuiTN2543
Singapore AirlinesSQ1234
Hawaiian AirlinesHA6717
American AirlinesAA9375
Qatar AirwaysQR3352
VIEW FLIGHTS
Wednesday
08:00
AirlineFlightNo
United AirlinesUA1873
Austrian AirlinesOS7908
LufthansaLH7485
Brussels AirlinesSN8850
09:15
AirlineFlightNo
Air Tahiti NuiTN2556
Alaska AirlinesAS406
Hawaiian AirlinesHA6724
American AirlinesAA9349
Qatar AirwaysQR2990
13:00
AirlineFlightNo
United AirlinesUA2275
LufthansaLH7487
AviancaAV2029
15:59
AirlineFlightNo
Alaska AirlinesAS348
21:55
AirlineFlightNo
Korean AirKE3019
China Eastern AirlinesMU8804
Delta Air LinesDL541
22:05
AirlineFlightNo
United AirlinesUA2402
Ethiopian AirlinesET1369
All Nippon AirwaysNH7282
Copa AirlinesCM2765
23:20
AirlineFlightNo
United AirlinesUA2211
23:30
AirlineFlightNo
Air Tahiti NuiTN2791
Alaska AirlinesAS367
Hawaiian AirlinesHA6718
American AirlinesAA9440
Japan AirlinesJL5440
Qatar AirwaysQR2049
23:59
AirlineFlightNo
Air Tahiti NuiTN2543
Hawaiian AirlinesHA6717
American AirlinesAA9375
Qatar AirwaysQR3352
VIEW FLIGHTS
Thursday
05:59
AirlineFlightNo
Korean AirKE3019
China Eastern AirlinesMU8804
08:00
AirlineFlightNo
United AirlinesUA1873
Austrian AirlinesOS7908
LufthansaLH7485
Brussels AirlinesSN8850
09:15
AirlineFlightNo
Air Tahiti NuiTN2556
Alaska AirlinesAS406
Hawaiian AirlinesHA6724
American AirlinesAA9349
Qatar AirwaysQR2990
13:00
AirlineFlightNo
United AirlinesUA2275
LufthansaLH7487
AviancaAV2029
15:59
AirlineFlightNo
Alaska AirlinesAS348
21:55
AirlineFlightNo
Delta Air LinesDL541
22:05
AirlineFlightNo
United AirlinesUA2402
Ethiopian AirlinesET1369
All Nippon AirwaysNH7282
Copa AirlinesCM2765
23:20
AirlineFlightNo
United AirlinesUA2211
23:30
AirlineFlightNo
Air Tahiti NuiTN2791
Alaska AirlinesAS367
Hawaiian AirlinesHA6718
American AirlinesAA9440
Japan AirlinesJL5440
Qatar AirwaysQR2049
23:59
AirlineFlightNo
Air Tahiti NuiTN2543
Singapore AirlinesSQ1234
Hawaiian AirlinesHA6717
American AirlinesAA9375
Qatar AirwaysQR3352
VIEW FLIGHTS
Friday
06:02
AirlineFlightNo
United AirlinesUA2402
Ethiopian AirlinesET1369
All Nippon AirwaysNH7282
Copa AirlinesCM2765
07:17
AirlineFlightNo
United AirlinesUA2211
07:27
AirlineFlightNo
Air Tahiti NuiTN2791
Alaska AirlinesAS367
Hawaiian AirlinesHA6718
American AirlinesAA9440
Qatar AirwaysQR2049
08:00
AirlineFlightNo
United AirlinesUA1873
Austrian AirlinesOS7908
LufthansaLH7485
Brussels AirlinesSN8850
09:15
AirlineFlightNo
Air Tahiti NuiTN2556
Alaska AirlinesAS406
Hawaiian AirlinesHA6724
American AirlinesAA9349
Qatar AirwaysQR2990
13:00
AirlineFlightNo
United AirlinesUA2275
LufthansaLH7487
AviancaAV2029
15:59
AirlineFlightNo
Alaska AirlinesAS348
21:55
AirlineFlightNo
Korean AirKE3019
China Eastern AirlinesMU8804
Delta Air LinesDL541
23:59
AirlineFlightNo
Air Tahiti NuiTN2543
Singapore AirlinesSQ1234
Hawaiian AirlinesHA6717
American AirlinesAA9375
Japan AirlinesJL5440
Qatar AirwaysQR3352
VIEW FLIGHTS
Saturday
08:00
AirlineFlightNo
United AirlinesUA1873
Austrian AirlinesOS7908
LufthansaLH7485
Brussels AirlinesSN8850
09:15
AirlineFlightNo
Air Tahiti NuiTN2556
Alaska AirlinesAS406
Hawaiian AirlinesHA6724
American AirlinesAA9349
Qatar AirwaysQR2990
13:00
AirlineFlightNo
United AirlinesUA2275
LufthansaLH7487
AviancaAV2029
15:59
AirlineFlightNo
Alaska AirlinesAS348
21:55
AirlineFlightNo
Korean AirKE3019
China Eastern AirlinesMU8804
Delta Air LinesDL541
22:05
AirlineFlightNo
United AirlinesUA2402
23:20
AirlineFlightNo
United AirlinesUA2211
23:30
AirlineFlightNo
Alaska AirlinesAS367
23:59
AirlineFlightNo
Air Tahiti NuiTN2543
Singapore AirlinesSQ1234
Hawaiian AirlinesHA6717
American AirlinesAA9375
Qatar AirwaysQR3352
VIEW FLIGHTS
Sunday
05:59
AirlineFlightNo
Korean AirKE3019
China Eastern AirlinesMU8804
06:02
AirlineFlightNo
Ethiopian AirlinesET1369
All Nippon AirwaysNH7282
Copa AirlinesCM2765
08:14
AirlineFlightNo
United AirlinesUA1873
09:15
AirlineFlightNo
Alaska AirlinesAS406
13:00
AirlineFlightNo
United AirlinesUA2275
15:59
AirlineFlightNo
Alaska AirlinesAS348
21:55
AirlineFlightNo
Delta Air LinesDL541
22:05
AirlineFlightNo
United AirlinesUA2402
23:20
AirlineFlightNo
United AirlinesUA2211
23:30
AirlineFlightNo
Alaska AirlinesAS367
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
Richmond Vancouver to Dulles03,763 km (2,338 miles)5 Hours 14 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.

Planning a Holiday or Business Trip?

Find cheap vehicle rental deals in Seattle

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 £108.21 ($147 €125.60)
£108.21
$147 | €125.60
Check Latest Price
DIRECT United
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 £217.90 ($296 €252.91)
£217.90
$296 | €252.91
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 £78.03 ($106 €90.57)
£78.03
$106 | €90.57
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 £195.08 ($265 €226.42)
£195.08
$265 | €226.42
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

Was your flight delayed or cancelled?

Was your flight delayed or cancelled?

You may be eligible to receive up to 600 EUR compensation per person in your party.

Claim Now!

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

Who flies from Seattle to Washington?
The following airlines fly from Seattle (SEA) to Washington (IAD): Air Tahiti Nui, Alaska Airlines, All Nippon Airways, American Airlines, Austrian Airlines, Avianca, Brussels Airlines, China Eastern Airlines, Copa Airlines, Delta Air Lines, Ethiopian Airlines, Hawaiian Airlines, Japan Airlines, Korean Air, Lufthansa, Qatar Airways, Singapore Airlines, 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.

Alternative Airports in United States with Connections from Seattle Airport

Looking for the best hire car deals?

Search for the cheapest vehicle hire deals at SEA

Useful Information about Seattle Airport

Lounges at Seattle Airport

See all the airport lounges, locations and opening times available at Seattle Airport

View...
Eating and Drinking at Seattle Airport

See all bars and restaurants at Seattle Airport, including locations and if they are before or after check-in

View...
Duty Free Shopping at Seattle Airport

See all shops available at Seattle Airport - plan your duty free shopping in advance

View...
Seattle Tourist Attractions

From wine tasting to a coffee & chocolate walking tour, just some of the things to see in Seattle..

View...