Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
AS 348 · Atlanta (ATL) → Seattle (SEA)
Sold by Alaska. Still flying: 52 of the last 56 days (Daily).
Arrives on time69%within 15 minutes, of 129 flights
Cancelled1.6%of scheduled flights
An hour or more late9%of flights that operated
When late, on average56 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 Atlanta).
- Leaves ATL
- 08:54
- Arrives SEA
- 11:20
- Flight time
- 5h 26m
- Days flown, last 8 weeks
- 52 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 ATL
All flights leaving Atlanta (ATL) at 8–9 am, wherever they’re going: 90% left within 15 minutes and 2.0% were cancelled (27,311 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.