Monterey (MRY) to San Francisco (SFO): On-Time Performance
Data through May 2026
The calendar drives reliability on MRY–SFO. August 2025 flights landed on schedule 91% of the time, but May 2026 dropped to 37% — a gap of 54 points. Across the full period the route averages 76% on-time against a national 78%.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 1.1%
- Flights/day
- 1.9
- last 12 months
- Duration
- 54m
- scheduled
- Distance
- 77 mi
Monthly on-time trend
Best time to fly from MRY to SFO
Aim for departures around 5 a.m. (93% on-time); avoid 12 p.m. departures (38%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 16 min |
| Tuesdaybest | 79% | 16 min |
| Wednesday | 77% | 14 min |
| Thursday | 76% | 19 min |
| Friday | 72% | 20 min |
| Saturday | 78% | 18 min |
| Sunday | 73% | 21 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft19%
- Airline operations29%
- National airspace system39%
- Weather13%
Frequently asked questions
- How often are flights from MRY to SFO delayed?
- 24% of MRY–SFO flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 18 minutes.
- What is the best time of day to fly from MRY to SFO?
- Departures around 5 a.m. have the best record (93% on-time), while departures around 12 p.m. have the worst (38%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MRY to SFO?
- The scheduled MRY–SFO flight time averages 54m over 77 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are MRY to SFO flights cancelled?
- 1.1% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from MRY to SFO?
- May 2026 was the roughest month in this dataset, with only 37% of arrivals on time. The best was August 2025 at 91%. If your dates are flexible, that 54-point gap is worth planning around.
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Based on 1,333 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.