Direct flights from Seattle to Dulles SEA → IAD
United Airlines, Alaska Airlines and Delta Air Lines fly nonstop from Seattle (SEA) to Dulles (IAD), daily. The flight takes about 5h 15m and covers 2,300 miles (3,702 km). Arrivals run on time 80.8% at SEA and 83.7% at IAD — BTS data for the last three months, counting arrivals within 15 minutes of schedule.
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Alaska Airlines
AS
Delta Air Lines
DL
NetJets Aviation
1I
United Airlines
UA
Frequently asked questions
Is there a direct flight from Seattle to Dulles?
Yes, United Airlines, Alaska Airlines and 1 more airline operate nonstop flights from Seattle (SEA) to Dulles (IAD).
Which airlines fly direct from Seattle to Dulles?
United Airlines, Alaska Airlines, Delta Air Lines operate nonstop flights from Seattle to Dulles.
How long is the flight from Seattle to Dulles?
The nonstop flight from Seattle to Dulles takes ~5h 15m (approximately 3702 km).
How often do direct flights operate from Seattle to Dulles?
Nonstop flights from Seattle to Dulles operate daily.
What is the on-time performance for flights from Seattle to Dulles?
Arrivals run on time 80.8% at SEA and 83.7% at IAD — BTS data for the last three months, counting arrivals within 15 minutes of schedule.
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