Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
AS 2123 · Seattle (SEA) → Missoula (MSO)
Sold by Alaska, flown by Horizon. Still flying: 44 of the last 56 days (Mon, Tue, Wed, Thu, Fri, Sun).
Arrives on time70%within 15 minutes, of 44 flights
Cancelled0.0%of scheduled flights
An hour or more late2%of flights that operated
When late, on average40 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Missoula is 1 h ahead of Seattle).
- Leaves SEA
- 16:54
- Arrives MSO
- 19:19
- Flight time
- 1h 25m
- Days flown, last 8 weeks
- 44 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 SEA
All flights leaving Seattle (SEA) at 4–5 pm, wherever they’re going: 78% left within 15 minutes and 0.9% were cancelled (6,716 flights in the year). Other Alaska flights on this route →
Upcoming forecasts
This flight isn’t in our published forecasts for the next few days.