Direct flights from Seattle to Houston
41 nonstop flights a week on 2 airlines. Zero layovers — one hop from SEA to IAH.
Flight time: about 3h48m 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 UAL2702 | 12:21a | 3h40m | Mon, Sun |
| United UAL2702 | 12:29a | 3h47m | Tue–Thu |
| United UAL2702 | 12:40a | 3h44m | Sat |
| United UAL2702 | 1:33a | 4h5m | Fri |
| United UAL2135 | 7:23a | 3h48m | Sat |
| United UAL2135 | 7:32a | 3h42m | Sun |
| United UAL2135 | 7:38a | 3h51m | Fri |
| United UAL2135 | 7:47a | 3h47m | Mon–Wed |
| Alaska ASA438 | 10:54a | 4h1m | Sat |
| Alaska ASA438 | 11:00a | 3h36m | Sun |
| Alaska ASA438 | 11:10a | 3h57m | Wed–Thu |
| Alaska ASA438 | 11:24a | 3h59m | Mon |
| Alaska ASA438 | 11:26a | 3h49m | Fri |
| Alaska ASA438 | 12:03p | 3h41m | Tue |
| United UAL1752 | 12:19p | 4h | Mon, Wed |
| United UAL1752 | 12:31p | 3h47m | Tue, Thu |
| United UAL1752 | 12:41p | 3h44m | Sat |
| United UAL1752 | 12:49p | 3h47m | Fri |
| United UAL1752 | 1:05p | 3h45m | Sun |
| United UAL1660 | 5:14p | 4h6m | Fri |
| United UAL1660 | 5:18p | 3h44m | Mon, Tue, Wed, Thu, Sat |
| United UAL1660 | 5:25p | 3h32m | Sun |
| Alaska ASA240 | 5:42p | 3h55m | Fri–Sun |
| Alaska ASA240 | 5:48p | 3h48m | Tue |
| Alaska ASA240 | 6:12p | 4h11m | Thu |
| Alaska ASA240 | 6:40p | 3h48m | Mon, Wed |
UnitedThe route
One hop: SEA → IAHDrag to pan · scroll with ⌘/Ctrl to zoom · arrow keys when focused
Nonstop from Seattle (SEA) to Houston (IAH)
Seattle–Tacoma International Airport (SEA) has 41 nonstop flights a week to Houston (IAH), operated by Alaska 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 Houston?
The nonstop flight from Seattle (SEA) to Houston (IAH) takes about 3h48m in the air, based on recently observed nonstop departures.