Direct flights from Seattle to Boston
61 nonstop flights a week on 3 airlines. Zero layovers — one hop from SEA to BOS.
Flight time: about 4h50m 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 |
|---|---|---|---|
| JetBlue JBU398 | 12:02a | 4h51m | Mon, Fri |
| Alaska ASA214 | 12:05a | 5h9m | Sun |
| JetBlue JBU398 | 12:09a | 4h34m | Thu |
| Alaska ASA214 | 12:26a | 4h47m | Wed |
| JetBlue JBU398 | 12:37a | 5h1m | Sat |
| JetBlue JBU398 | 1:47a | 4h55m | Tue |
| Delta DAL459 | 7:35a | 4h53m | Fri |
| Alaska ASA357 | 7:53a | 4h50m | Fri |
| Delta DAL459 | 7:54a | 4h44m | Wed, Sat |
| Delta DAL459 | 7:57a | 4h39m | Tue, Thu, Sun |
| Alaska ASA357 | 7:58a | 5h18m | Sat |
| Alaska ASA357 | 8:06a | 4h41m | Wed |
| Delta DAL459 | 8:14a | 4h33m | Mon |
| Alaska ASA357 | 9:26a | 4h32m | Thu |
| Alaska ASA357 | 10:01a | 4h47m | Tue |
| Alaska ASA306 | 10:41a | 5h20m | Sat |
| Alaska ASA306 | 10:48a | 4h31m | Thu |
| Alaska ASA306 | 11:04a | 4h54m | Fri |
| Delta DAL438 | 11:42a | 4h54m | Mon, Sun |
| Delta DAL438 | 11:51a | 4h47m | Tue |
| Delta DAL438 | 12:00p | 4h40m | Wed, Fri |
| Alaska ASA357 | 12:03p | 5h16m | Sun |
| Alaska ASA306 | 12:22p | 4h53m | Wed |
| Delta DAL438 | 12:29p | 4h30m | Thu |
| Alaska ASA357 | 12:44p | 5h11m | Mon |
| Alaska ASA306 | 1:01p | 5h7m | Tue |
| Delta DAL438 | 1:03p | 4h47m | Thu |
| Alaska ASA306 | 1:23p | 4h58m | Thu |
| Alaska ASA306 | 1:40p | 4h50m | Sun |
| Alaska ASA460 | 3:52p | 4h52m | Fri–Sat |
| Alaska ASA460 | 4:06p | 4h28m | Wed |
| Delta DAL474 | 4:13p | 4h47m | Tue |
| Delta DAL474 | 4:27p | 4h36m | Thu |
| Delta DAL474 | 4:42p | 4h11m | Wed |
| Alaska ASA460 | 4:54p | 4h52m | Tue |
| Delta DAL474 | 5:05p | 4h56m | Fri |
| Alaska ASA460 | 5:13p | 4h51m | Thu |
| Alaska ASA460 | 5:23p | 5h5m | Sun |
| Delta DAL474 | 5:38p | 4h41m | Mon |
| Delta DAL474 | 6:28p | 4h51m | Sun |
| Alaska ASA460 | 7:15p | 4h42m | Mon |
| Alaska ASA214 | 11:16p | 4h54m | Fri |
| Delta DAL473 | 11:20p | 4h46m | Sat–Sun |
| Alaska ASA214 | 11:27p | 4h48m | Mon, Wed, Thu |
| Delta DAL473 | 11:32p | 4h36m | Mon–Wed |
| Delta DAL473 | 11:47p | 4h49m | Thu |
| JetBlue JBU398 | 11:53p | 5h2m | Sat |
| Alaska ASA214 | 11:53p | 5h8m | Sun |
| JetBlue JBU398 | 11:59p | 4h55m | Tue |
DeltaThe route
One hop: SEA → BOSDrag to pan · scroll with ⌘/Ctrl to zoom · arrow keys when focused
Nonstop from Seattle (SEA) to Boston (BOS)
Seattle–Tacoma International Airport (SEA) has 61 nonstop flights a week to Boston (BOS), operated by Alaska, Delta and JetBlue. 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 Boston?
The nonstop flight from Seattle (SEA) to Boston (BOS) takes about 4h50m in the air, based on recently observed nonstop departures.
How long does it take to drive from Seattle to Boston?
Driving from Seattle to Boston takes about 44h 21m behind the wheel — roughly 3,044 miles, or about 4 days of real driving. The nonstop flight takes about 4h50m.