Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
AS 1506 · Boston (BOS) → Seattle (SEA)
Sold by Alaska. Still flying: 18 of the last 56 days (Mon, Thu, Fri).
Arrives on time83%within 15 minutes, of 18 flights
Cancelled0.0%of scheduled flights
An hour or more late0%of flights that operated
When late, on average26 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Seattle is 3 h behind Boston).
- Leaves BOS
- 15:26
- Arrives SEA
- 18:45
- Flight time
- 6h 19m
- Days flown, last 8 weeks
- 18 of 56
Each square is a day, Sat Jun 6 to Fri Jul 31, two weeks per row (each column is the same weekday); filled = flew.
How late it arrives
Share of flights that operated arriving more than this late.
Horizontal: minutes late at arrival (0 to 3 hours). Vertical: share of flights later than that.
Its hour at BOS
All flights leaving Boston (BOS) at 3–4 pm, wherever they’re going: 70% left within 15 minutes and 2.8% were cancelled (9,419 flights in the year). Other Alaska flights on this route →
Upcoming forecasts
Our odds that this flight is late or cancelled on the days we publish.