Airlines with flights from Dulles to Seattle
There are 6 airlines with scheduled flights between IAD and SEA. Alaska Airlines, United and Delta has non-stop flights from Washington Dulles Airport to Seattle Airport and the flight time is 5 hours and 47 minutes.
There are 6 airlines with scheduled flights between IAD and SEA. Alaska Airlines, United and Delta has non-stop flights from Washington Dulles Airport to Seattle Airport and the flight time is 5 hours and 47 minutes. Choose airline
Schedules
Non-stop with Alaska Airlines
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Total flight time: 5 hours and 47 minutes
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One World Alliance
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Seattle is a Alaska Airlines hub (Primary hub).
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21 flights per week
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Boeing 737-900 (winglets) Passenger/BBJ3Boeing 737MAX 9 PassengerBoeing 737-800 (winglets) Passenger/BBJ2
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Business and first class available
Flight
The timetable & schedule information was updated at 2026-04-22
Non-stop with United Airlines
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Total flight time: 5 hours and 45 minutes
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Dulles is a United Airlines hub (Secondary hub).
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20 flights per week
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Boeing 737-800 PassengerBoeing 737MAX 9 Passenger
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Business and first class available
Flight
The timetable & schedule information was updated at 2026-04-22
Non-stop with Delta Air Lines
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Total flight time: 5 hours and 51 minutes
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Sky Team Alliance
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Seattle is a Delta Air Lines hub.
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7 flights per week
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Airbus A220-300
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First class available
Flight
The timetable & schedule information was updated at 2026-04-22
Via Minneapolis with Delta Air Lines
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Total flight time: 7h 13m - 9h 38m.
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Sky Team Alliance
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Seattle is a Delta Air Lines hub.
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90 flights per week
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Airbus A220-300
Flight
DL868
DL877
DL505
The timetable & schedule information was updated at 2026-04-22
Via Minneapolis with Sun Country Airlines
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Total flight time: 7h 19m - 8h 33m.
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Low-cost airline
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11 flights per week
Flight
SY285
The timetable & schedule information was updated at 2026-04-22
Via Detroit with Delta Air Lines
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Total flight time: 7h 22m - 8h 27m.
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Sky Team Alliance
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Seattle is a Delta Air Lines hub.
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77 flights per week
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Airbus A220-300
Flight
DL734
DL565
DL565
The timetable & schedule information was updated at 2026-04-22
Via Denver with Southwest Airlines
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Total flight time: 7h 30m - 9h 00m.
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Low-cost airline
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99 flights per week
Flight
The timetable & schedule information was updated at 2026-04-22
Via Charlotte with American Airlines