Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
AS 311 · Boston (BOS) → Portland (PDX)
Sold by Alaska. Still flying: 56 of the last 56 days (Daily).
Arrives on time88%within 15 minutes, of 125 flights
Cancelled0.0%of scheduled flights
An hour or more late0%of flights that operated
When late, on average32 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Portland is 3 h behind Boston).
- Leaves BOS
- 06:03
- Arrives PDX
- 09:19
- Flight time
- 6h 16m
- Days flown, last 8 weeks
- 56 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 6–7 am, wherever they’re going: 93% left within 15 minutes and 2.7% were cancelled (11,246 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.