About 1 in 5 AS 3291 flights from Portland arrived 15+ minutes late, diverted or cancelled over the past year (20%); 0.5% were cancelled. The typical flight landed 5 minutes early.
AS 3291: PDX → SLC
Scheduled to leave Portland at 5:40 p.m. local time, operated by SkyWest as OO 3291. Over the past year it arrived on time 80% of the time (199 flights), better than other AS flights on the route at that hour (77%). Last seen in the data Aug 31, 2026.
Usually Alaska Airlines's last flight of the day from Portland to Salt Lake City (100% of days). Alaska Airlines's last PDX–SLC flight was cancelled 0.6% of the time, against 0.2% for its earlier ones. If it's cancelled, the next Alaska Airlines flight is usually around 10:45 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 29 | 83% |
| Tuesday | 30 | 77% |
| Wednesday | 31 | 94% |
| Thursday | 27 | 81% |
| Friday | 29 | 76% |
| Saturday | 25 | 76% |
| Sunday | 28 | 71% |
Why it was late
All flights PDX → SLC · Connecting off AS 3291? Check the risk
Questions
How often is AS 3291 from PDX to SLC late?
Alaska Airlines 3291 from Portland, OR to Salt Lake City, UT arrived 15 or more minutes late, was diverted or was cancelled on 20% of 199 scheduled flights between September 2025 and August 2026. 0.5% 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.