About 1 in 3 UA 5351 flights from Santa Ana arrived 15+ minutes late, diverted or cancelled over the past year (34%); 1.7% were cancelled. The typical flight landed 2 minutes late.
UA 5351: SNA → SFO
Scheduled to leave Santa Ana at 4:12 p.m. local time, operated by SkyWest as OO 5351. Over the past year it arrived on time 66% of the time (175 flights), worse than other UA flights on the route at that hour (74%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 26 | 58% |
| Tuesday | 25 | 80% |
| Wednesday | 25 | 68% |
| Thursday | 26 | 54% |
| Friday | 26 | 69% |
| Saturday | 21 | 86% |
| Sunday | 26 | 54% |
Why it was late
All flights SNA → SFO · Connecting off UA 5351? Check the risk
Questions
How often is UA 5351 from SNA to SFO late?
United Airlines 5351 from Santa Ana, CA to San Francisco, CA arrived 15 or more minutes late, was diverted or was cancelled on 34% of 175 scheduled flights between September 2025 and August 2026. 1.7% 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.