Direct flights from Seattle to Washington
42 nonstop flights a week on 3 airlines. Zero layovers — one hop from SEA to IAD.
Flight time: about 4h29m nonstop
Which days does it fly?
When does it fly?
Departure times in Seattle local time, from flights observed over the last 7 days.
| Flight | Departs | Duration | Days |
|---|---|---|---|
| Delta DAL541 | 12:03a | 4h28m | Tue |
| United UAL2693 | 12:43a | 4h34m | Fri |
| United UAL1523 | 8:34a | 4h26m | Tue |
| United UAL1523 | 8:42a | 4h27m | Mon, Wed, Thu, Fri, Sat |
| Alaska ASA737 | 8:43a | 4h36m | Sat |
| United UAL1523 | 8:55a | 4h25m | Sun |
| Alaska ASA737 | 8:58a | 4h45m | Sun |
| Alaska ASA737 | 9:10a | 4h15m | Mon–Thu |
| Alaska ASA1414 | 9:12a | 4h43m | Fri |
| Delta DAL541 | 12:50p | 4h39m | Sat |
| Delta DAL541 | 3:24p | 4h31m | Wed |
| Delta DAL541 | 3:34p | 4h31m | Thu |
| Delta DAL541 | 3:49p | 3h45m | Sun |
| Alaska ASA675 | 4:04p | 4h37m | Mon |
| Alaska ASA675 | 4:24p | 4h24m | Wed, Sat, Sun |
| Delta DAL541 | 4:38p | 3h19m | Fri |
| Alaska ASA675 | 4:42p | 4h38m | Fri |
| Alaska ASA675 | 4:47p | 4h15m | Tue |
| Alaska ASA675 | 5:05p | 4h28m | Thu |
| Delta DAL541 | 6:34p | 4h36m | Tue |
| Alaska ASA367 | 9:52p | 4h19m | Wed, Sat |
| Alaska ASA367 | 9:58p | 4h32m | Fri, Sun |
| Alaska ASA367 | 10:09p | 4h31m | Tue |
| Alaska ASA367 | 10:26p | 4h50m | Mon |
| Alaska ASA367 | 10:37p | 4h17m | Thu |
| United UAL2693 | 11:31p | 4h25m | Tue, Fri |
| United UAL2693 | 11:39p | 4h30m | Sat |
| United UAL2693 | 11:48p | 4h24m | Mon, Wed, Sun |
Delta
UnitedThe route
One hop: SEA → IADDrag to pan · scroll with ⌘/Ctrl to zoom · arrow keys when focused
Nonstop from Seattle (SEA) to Washington (IAD)
Seattle–Tacoma International Airport (SEA) has 42 nonstop flights a week to Washington (IAD), operated by Alaska, Delta and United. No layovers, no connections — one hop out of SEA and you're there.
This route flies every day of the week, so any travel day works. Route data updated October 2026 from observed departures.
Route data updated October 2026 from observed flight departures. Schedules change — always confirm with the airline before booking.
How long is the flight from Seattle to Washington?
The nonstop flight from Seattle (SEA) to Washington (IAD) takes about 4h29m in the air, based on recently observed nonstop departures.