About 1 in 2 UA 5248 flights from Sacramento arrived 15+ minutes late, diverted or cancelled over the past year (48%); 2.8% were cancelled. The typical flight landed 12 minutes late.
UA 5248: SMF → SFO
Scheduled to leave Sacramento at 11:46 a.m. local time, operated by SkyWest as OO 5248. Over the past year it arrived on time 52% of the time (364 flights), worse than other UA flights on the route at that hour (60%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 43% |
| Tuesday | 52 | 62% |
| Wednesday | 52 | 50% |
| Thursday | 51 | 43% |
| Friday | 52 | 42% |
| Saturday | 52 | 67% |
| Sunday | 52 | 58% |
Why it was late
All flights SMF → SFO · Connecting off UA 5248? Check the risk
Questions
How often is UA 5248 from SMF to SFO late?
United Airlines 5248 from Sacramento, CA to San Francisco, CA arrived 15 or more minutes late, was diverted or was cancelled on 48% of 364 scheduled flights between September 2025 and August 2026. 2.8% 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 United Airlines for today's flight. Method.