Nonstop from Washington Dulles International to Seattle-Tacoma International: distance, flying time, which airlines fly it and how often.
Distance
2,300 mi, great circle
Flying time
typical, gate to gate
Flights a day
average, November 2026
Airlines
passenger airlines
The shortest path over the Earth's surface. Actual tracks vary with winds and airspace. Map © OpenStreetMap contributors.
Fares found in recent searches load here. You can also compare IAD to SEA fares by month.
Alaska cruise flights compared: SEA, YVR or ANC, why Anchorage cruises really leave from Whittier or Seward, and how the PVSA rule shapes routes.
The closest airport to Seattle cruise terminals is SEA, about 15 miles from Pier 91 and 14 from Pier 66. Compare transfers, costs and timing.
About 5h 04m gate to gate for the 3,702 km (2,300 mile) trip, estimated from distance. Schedules vary by airline and season, and winds can add or save time.
Alaska Airlines, Delta Air Lines and United Airlines, with about 5 flights a day between them in our data (AeroDataBox, November 2026).