Year-round direct route · 3,702 km
Dulles (IAD) to Seattle (SEA)
Nonstop service operated by Alaska Airlines, Delta Air Lines, United Airlines. Around 5h 04m gate to gate over 3,702 km (2,300 mi).
Route facts
| Airlines | Alaska Airlines, Delta Air Lines, United Airlines |
| Service | Year-round |
| Distance | 3,702 km / 2,300 mi |
| Est. flight time | about 5h 04m |
| Return direction | see SEA departures |
Times are estimates from distance; days of operation and schedules change. Verify with the airline before booking.
IAD · Washington Dulles International Airport
Dulles, United States
SEA · Seattle–Tacoma International Airport
Seattle, United States