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IAD–SEA · Nonstop
Washington (Washington Dulles International Airport) to Seattle (Seattle-Tacoma International Airport).
The estimated flight time from Washington (IAD) to Seattle (SEA) is about 5h 20m, covering 2,300 miles. Alaska Airlines, United Airlines, and Delta Air Lines fly the route nonstop with 6-7/day departures, from 06:03 to 23:22 local time.
Plan this route| Est. flight time | Distance | Route type | Captured freq. | Market |
|---|---|---|---|---|
| ~5h 20m Estimated from great-circle distance — no tracked flights yet. | 2,300 mi | Nonstop | 6-7/day From the current provider sample; confirm live timetables before booking. | Domestic |
Alaska Airlines, United Airlines, and Delta Air Lines operate 6-7/day flights from IAD to SEA.
| Airline | Captured frequency | Aircraft | Departures (local) |
|---|---|---|---|
| Alaska Airlines | 3/day | Boeing 737 · Seat map | 06:0309:3018:14 |
| United Airlines | 2-3/day | Boeing 737 · Seat map | 09:0013:1013:2013:3617:5518:0023:22 |
| Delta Air Lines | 1/day | Airbus A220 | 07:1013:25 |
Methodology: airline, aircraft, terminal, and departure-time details come from a full week of published airline schedules for IAD, refreshed on a rolling basis. Frequency uses 43 scheduled departures across 7 observed days; flight time is estimated from flying distance until this route has enough tracked flights for an observed average.
The estimated flight time from Washington (IAD) to Seattle (SEA) is about 5h 20m, based on the 2,300-mile flying distance.
Washington (IAD) to Seattle (SEA) is about 2,300 miles by air.
Yes. Alaska Airlines, United Airlines, and Delta Air Lines fly nonstop from Washington (IAD) to Seattle (SEA), with 6-7/day departures.
Alaska Airlines, United Airlines, and Delta Air Lines fly nonstop from Washington (IAD) to Seattle (SEA).
The IAD–SEA route is flown with Airbus A220, Boeing 737.