About 1 in 2 UA 4729 flights from Monterey arrived 15+ minutes late, diverted or cancelled over the past year (45%); 1.2% were cancelled. The typical flight landed 11 minutes late.
UA 4729: MRY → SFO
Scheduled to leave Monterey at 3:30 p.m. local time, operated by SkyWest as OO 4729. Over the past year it arrived on time 55% of the time (242 flights), worse than other UA flights on the route at that hour (72%). Last seen in the data Aug 10, 2026.
Usually United Airlines's last flight of the day from Monterey to San Francisco (82% of days). United Airlines's last MRY–SFO flight was cancelled 0.3% of the time, against 0.5% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 8:00 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 39 | 51% |
| Tuesday | 33 | 55% |
| Wednesday | 37 | 59% |
| Thursday | 36 | 56% |
| Friday | 37 | 46% |
| Saturday | 34 | 56% |
| Sunday | 26 | 65% |
Why it was late
All flights MRY → SFO · Connecting off UA 4729? Check the risk
Questions
How often is UA 4729 from MRY to SFO late?
United Airlines 4729 from Monterey, CA to San Francisco, CA arrived 15 or more minutes late, was diverted or was cancelled on 45% of 242 scheduled flights between September 2025 and August 2026. 1.2% 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.