Direct flights from Houston to Seattle
42 nonstop flights a week on 2 airlines. Zero layovers — one hop from IAH to SEA.
Flight time: about 4h3m nonstop
Which days does it fly?
When does it fly?
Departure times in Houston local time, from flights observed over the last 7 days.
| Flight | Departs | Duration | Days |
|---|---|---|---|
| Alaska ASA241 | 7:10a | 4h1m | Mon, Tue, Sat |
| Alaska ASA241 | 7:19a | 3h51m | Wed–Fri |
| Alaska ASA241 | 7:41a | 4h13m | Sun |
| United UAL2205 | 10:04a | 4h24m | Thu |
| United UAL2205 | 10:10a | 4h7m | Mon, Tue, Wed, Sun |
| United UAL2205 | 10:16a | 4h2m | Fri–Sat |
| United UAL2228 | 12:13p | 4h1m | Fri |
| United UAL2228 | 12:16p | 3h56m | Mon, Wed, Sat |
| United UAL2228 | 12:25p | 3h57m | Sun |
| United UAL2228 | 12:46p | 4h19m | Thu |
| United UAL2228 | 1:19p | 3h56m | Tue |
| Alaska ASA439 | 2:46p | 4h5m | Mon, Tue, Thu, Sat, Sun |
| Alaska ASA439 | 2:55p | 4h15m | Wed |
| Alaska ASA439 | 3:13p | 3h40m | Fri |
| United UAL2638 | 4:22p | 4h | Tue |
| United UAL2638 | 4:30p | 4h4m | Sat–Sun |
| United UAL2638 | 5:01p | 4h24m | Thu |
| United UAL2638 | 5:16p | 4h5m | Wed |
| United UAL2638 | 5:50p | 3h54m | Mon, Fri |
| United UAL2341 | 8:19p | 4h14m | Wed, Sat |
| United UAL2341 | 8:30p | 4h8m | Mon, Sun |
| United UAL2341 | 8:46p | 3h50m | Fri |
| United UAL2341 | 8:56p | 4h2m | Tue |
| United UAL2341 | 9:37p | 4h30m | Thu |
UnitedThe route
One hop: IAH → SEADrag to pan · scroll with ⌘/Ctrl to zoom · arrow keys when focused
Nonstop from Houston (IAH) to Seattle (SEA)
George Bush Intercontinental Airport (IAH) has 42 nonstop flights a week to Seattle (SEA), operated by Alaska and United. No layovers, no connections — one hop out of IAH 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 Houston to Seattle?
The nonstop flight from Houston (IAH) to Seattle (SEA) takes about 4h3m in the air, based on recently observed nonstop departures.