About 1 in 10 AS 2157 flights from Sacramento arrived 15+ minutes late, diverted or cancelled over the past year (10%); 1.5% were cancelled. The typical flight landed 7 minutes early.
AS 2157: SMF → BOI
Scheduled to leave Sacramento at 1:10 p.m. local time, operated by Horizon Air as QX 2157. Over the past year it arrived on time 90% of the time (195 flights), in line with other AS flights on the route at that hour (90%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 29 | 86% |
| Tuesday | 27 | 93% |
| Wednesday | 27 | 85% |
| Thursday | 28 | 93% |
| Friday | 28 | 93% |
| Saturday | 28 | 89% |
| Sunday | 28 | 89% |
Why it was late
All flights SMF → BOI · Connecting off AS 2157? Check the risk
Questions
How often is AS 2157 from SMF to BOI late?
Alaska Airlines 2157 from Sacramento, CA to Boise, ID arrived 15 or more minutes late, was diverted or was cancelled on 10% of 195 scheduled flights between September 2025 and August 2026. 1.5% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Alaska Airlines for today's flight. Method.