About 1 in 2 UA 4779 flights from Reno arrived 15+ minutes late, diverted or cancelled over the past year (47%); 1.6% were cancelled. The typical flight landed 11 minutes late.
UA 4779: RNO → SFO
Scheduled to leave Reno at 2:05 p.m. local time, operated by SkyWest as OO 4779. Over the past year it arrived on time 53% of the time (253 flights), better than other UA flights on the route at that hour (44%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 37 | 49% |
| Tuesday | 36 | 50% |
| Wednesday | 34 | 50% |
| Thursday | 36 | 56% |
| Friday | 37 | 51% |
| Saturday | 36 | 75% |
| Sunday | 37 | 43% |
Why it was late
All flights RNO → SFO · Connecting off UA 4779? Check the risk
Questions
How often is UA 4779 from RNO to SFO late?
United Airlines 4779 from Reno, NV to San Francisco, CA arrived 15 or more minutes late, was diverted or was cancelled on 47% of 253 scheduled flights between September 2025 and August 2026. 1.6% 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.