BostonSeattleFlight TimeBOS–SEA
Boston (Boston Logan International Airport) to Seattle (Seattle-Tacoma International Airport).
The flight from Boston (BOS) to Seattle (SEA) takes 5h 28m on average, covering about 2,627 miles. Across 5 flights we tracked, the fastest was 5h 24m and the slowest 5h 31m, with Alaska Airlines flying it most often.
Plan this routeAt a glance
| Avg flight time | Distance | Fastest tracked | Airlines |
|---|---|---|---|
| 5h 28m | 2,627 mi | 5h 24m | 1 |
Airlines on this route
Captured airlines for BOS to SEA
Our current provider sample includes 9-10/day from BOS to SEA across 3 captured airlines. Captured departure terminal data is available for B, A, C.
- First departure
- 07:00
- Last departure
- 19:44
- Cadence
- ~hourly
- Captured departures/day
- 19
| Airline | Captured daily freq. | Aircraft | Departures (local) |
|---|---|---|---|
| Alaska Airlines | 3-4/day | Boeing 737 · Terminal B · Seat map | 07:0307:04 |
Aircraft we tracked
Methodology: figures are aggregated from 5 real flights on this route tracked between 2026-06-14 and 2026-06-17, sourced from live flight data. Updated daily as new flights are observed.
Route FAQ
How long is the flight from BOS to SEA?
The BOS to SEA flight takes 5h 28m on average based on 5 tracked flights.
How far is BOS from SEA?
BOS to SEA is about 2,627 miles by air.
Which airlines fly from BOS to SEA?
Alaska Airlines flies the BOS to SEA route in our tracked route data.
What aircraft fly from BOS to SEA?
Aircraft observed on BOS to SEA include Boeing 737-900.