Direct flights from Dulles to Seattle IAD → SEA
Alaska Airlines, Delta Air Lines and United Airlines fly nonstop from Dulles (IAD) to Seattle (SEA). The flight takes about 5h 15m and covers 2,300 miles (3,702 km). Arrivals run on time 83.7% at IAD and 80.8% at SEA — BTS data for the last three months, counting arrivals within 15 minutes of schedule.
🔔 Watch IAD → SEA
We'll run this search daily and email you the cheapest direct fares we find.
Free · checked daily · one-click unsubscribe
Alaska Airlines
AS
Delta Air Lines
DL
United Airlines
UA
Frequently asked questions
Is there a direct flight from Dulles to Seattle?
Yes, Alaska Airlines, Delta Air Lines and 1 more airline operate nonstop flights from Dulles (IAD) to Seattle (SEA).
Which airlines fly direct from Dulles to Seattle?
Alaska Airlines, Delta Air Lines, United Airlines operate nonstop flights from Dulles to Seattle.
How long is the flight from Dulles to Seattle?
The nonstop flight from Dulles to Seattle takes ~5h 15m (approximately 3702 km).
What is the on-time performance for flights from Dulles to Seattle?
Arrivals run on time 83.7% at IAD and 80.8% at SEA — BTS data for the last three months, counting arrivals within 15 minutes of schedule.
Explore More
Scout — our search agent — hunts nonstop fares from Dulles every night and pings you when one's worth booking.
Watch it work →