Seattle to Washington flights
Direct and connecting flights from Seattle Tacoma International Airport (SEA) to Washington Dulles International Airport (IAD) — airlines, aircraft types, and the safety record for this route.
Route FAQ
How long does the flight from Seattle to Washington take?
Flight time from Seattle (SEA) to Washington (IAD) depends on routing, aircraft type, and whether the flight is direct or connecting. A direct flight typically reflects great-circle distance plus winds, while one-stop options can add several hours depending on the layover airport. The typical block time and frequency we have observed for this route are shown above.
Which airlines fly from Seattle to Washington?
Airline availability for SEA to IAD changes by season and sometimes week to week as carriers adjust capacity. The airlines and aircraft types observed operating this route, both direct and connecting, are listed below based on real flight-tracking data.
Are there direct flights from Seattle to Washington?
Direct (nonstop) availability on SEA to IAD varies by date, day of week, and season. Busy city pairs usually have multiple daily nonstops, while thinner routes may only have direct service a few days per week or only during peak seasons.
No fatal or serious occurrence involving any operator on this pair in the last 90 days.
- Alaska Airlines46
- United Airlines40
| Carrier | Sightings / 90d | Safety events |
|---|---|---|
| United Airlines | 3 sightings | No recorded events |
| Alaska Airlines | 3 sightings | No recorded events |
Planning SEA → IAD
SEA to IAD is a medium-haul route of 3,702 km (2,300 mi). See the return IAD → SEA route.
Alternative airports near Seattle: Seattle (BFI) — 9 km, Renton (RNT) — 9 km, Tacoma (TIW) — 28 km.
Alternative airports near Washington: Manassas (MNZ) — 25 km, Gaithersburg (GAI) — 35 km, Fort Belvoir (DAA) — 35 km.