Direct flights from Seattle to Denver
127 nonstop flights a week on 5 airlines. Zero layovers — one hop from SEA to DEN.
Flight time: about 2h9m 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 |
|---|---|---|---|
| United UAL2601 | 5:02a | 2h12m | Mon, Sun |
| United UAL2601 | 5:07a | 2h9m | Tue–Sat |
| Southwest SWA4697 | 5:30a | 2h21m | Sun |
| Southwest SWA3753 | 6:07a | 2h17m | Thu |
| Southwest SWA1384 | 6:42a | 2h16m | Mon, Fri |
| Southwest SWA4697 | 7:01a | 2h21m | Tue, Wed, Sat |
| Alaska ASA682 | 7:40a | 2h5m | Tue, Wed, Sun |
| Alaska ASA682 | 7:46a | 2h7m | Mon, Thu |
| Alaska ASA682 | 8:04a | 2h30m | Fri–Sat |
| United UAL1505 | 8:39a | 2h13m | Mon, Wed, Sun |
| United UAL1505 | 8:49a | 2h7m | Sat |
| Delta DAL1358 | 8:58a | 2h13m | Wed |
| Delta DAL1358 | 9:07a | 2h7m | Mon, Fri, Sat |
| United UAL1505 | 9:12a | 2h9m | Thu |
| Southwest SWA1921 | 9:15a | 2h4m | Sun |
| United UAL1505 | 9:18a | 2h10m | Tue |
| Delta DAL1358 | 9:25a | 2h2m | Tue |
| Delta DAL1358 | 9:38a | 1h56m | Thu |
| Delta DAL1358 | 10:07a | 2h8m | Sun |
| Alaska ASA535 | 10:34a | 2h5m | Sun |
| Alaska ASA535 | 10:39a | 2h4m | Tue, Thu, Sat |
| Southwest SWA1663 | 10:49a | 2h19m | Sat |
| Alaska ASA535 | 10:51a | 2h8m | Mon, Fri |
| Alaska ASA535 | 11:03a | 2h6m | Wed |
| Southwest SWA3754 | 11:20a | 2h3m | Thu |
| Southwest SWA4507 | 11:36a | 2h4m | Wed |
| Southwest SWA2860 | 11:40a | 2h14m | Mon, Fri |
| United UAL142 | 11:57a | 2h | Tue |
| United UAL2033 | 12:52p | 2h8m | Mon |
| Southwest SWA4507 | 12:59p | 2h8m | Tue |
| United UAL2033 | 12:59p | 2h7m | Sun |
| Alaska ASA304 | 1:01p | 2h30m | Mon |
| United UAL2033 | 1:09p | 2h12m | Wed, Thu, Sat |
| Alaska ASA304 | 1:11p | 2h18m | Thu, Sun |
| Southwest SWA428 | 1:13p | 2h7m | Sat |
| United UAL2033 | 1:15p | 2h9m | Tue |
| Alaska ASA304 | 1:16p | 2h13m | Wed |
| Southwest SWA1384 | 1:36p | 2h22m | Wed |
| Alaska ASA304 | 1:45p | 2h17m | Tue |
| Southwest SWA1384 | 1:46p | 2h4m | Tue |
| Delta DAL2543 | 1:52p | 2h7m | Wed |
| Delta DAL2543 | 1:56p | 2h18m | Thu, Sun |
| Delta DAL2543 | 2:13p | 2h12m | Tue, Sat |
| Southwest SWA2690 | 2:31p | 2h3m | Sun |
| Alaska ASA602 | 2:38p | 2h22m | Mon, Tue, Sun |
| United UAL333 | 2:40p | 2h20m | Thu |
| Delta DAL2543 | 2:44p | 2h26m | Fri |
| Alaska ASA602 | 2:48p | 2h5m | Wed |
| Southwest SWA4507 | 2:56p | 2h22m | Mon |
| Alaska ASA602 | 2:58p | 2h8m | Thu, Sat |
| United UAL333 | 3:05p | 2h15m | Mon |
| Alaska ASA602 | 3:15p | 2h33m | Fri |
| United UAL333 | 3:21p | 2h31m | Fri, Sun |
| Southwest SWA4507 | 3:26p | 2h3m | Fri |
| United UAL757 | 4:06p | 2h11m | Mon, Wed, Sat |
| United UAL757 | 4:22p | 2h10m | Sun |
| Frontier FFT3406 | 4:33p | 2h9m | Wed |
| Southwest SWA4697 | 4:41p | 2h | Mon |
| Southwest SWA4507 | 4:42p | 2h34m | Thu |
| United UAL757 | 4:44p | 2h21m | Thu |
| Frontier FFT3406 | 4:50p | 2h5m | Mon, Tue, Sat |
| Southwest SWA4697 | 4:57p | 2h15m | Thu |
| United UAL757 | 5:10p | 2h13m | Tue |
| Frontier FFT3406 | 5:52p | 2h18m | Thu |
| Southwest SWA4697 | 6:00p | 2h5m | Fri |
| United UAL1218 | 6:10p | 2h10m | Mon, Wed |
| United UAL757 | 6:12p | 2h8m | Fri |
| United UAL1218 | 6:23p | 2h12m | Sun |
| United UAL1505 | 6:25p | 2h4m | Fri |
| United UAL1218 | 6:36p | 2h10m | Thu–Fri |
| Southwest SWA3485 | 6:52p | 2h6m | Mon, Thu, Fri |
| Frontier FFT3406 | 6:58p | 2h8m | Fri |
| Southwest SWA196 | 7:07p | 1h55m | Sat |
| Southwest SWA2860 | 7:10p | 2h3m | Tue |
| Southwest SWA2860 | 7:19p | 2h14m | Wed |
| Alaska ASA310 | 7:38p | 2h27m | Thu, Sat |
| Alaska ASA310 | 7:49p | 2h10m | Sun |
| Alaska ASA310 | 7:59p | 2h20m | Wed |
| Alaska ASA310 | 8:11p | 2h6m | Mon, Fri |
| Delta DAL2851 | 8:19p | 2h2m | Mon, Sun |
| Delta DAL2851 | 8:29p | 2h13m | Thu–Sat |
| Delta DAL2851 | 8:44p | 2h13m | Tue |
| Alaska ASA310 | 8:52p | 1h24m | Tue |
| Delta DAL2851 | 9:23p | 2h7m | Wed |
| Southwest SWA2522 | 11:43p | 2h3m | Sun |
Delta
Southwest
UnitedThe route
One hop: SEA → DENDrag to pan · scroll with ⌘/Ctrl to zoom · arrow keys when focused
Nonstop from Seattle (SEA) to Denver (DEN)
Seattle–Tacoma International Airport (SEA) has 127 nonstop flights a week to Denver (DEN), operated by Alaska, Delta, Frontier, Southwest 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 Denver?
The nonstop flight from Seattle (SEA) to Denver (DEN) takes about 2h9m in the air, based on recently observed nonstop departures.