Medford (MFR) to San Francisco (SFO): On-Time Performance
Data through July 2026
The calendar drives reliability on MFR–SFO. September 2024 flights landed on schedule 89% of the time, but July 2026 dropped to 44% — a gap of 46 points. Across the full period the route averages 75% on-time against a national 78%. Morning departures also hold up better than evening ones (88% vs 70%), which matters most in the rough months.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 1.1%
- Flights/day
- 2.8
- last 12 months
- Duration
- 1h 30m
- scheduled
- Distance
- 329 mi
Best airline from MFR to SFO
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 76% | 16 min | 0.6% | 907 |
| SkyWest Airlines | 74% | 22 min | 1.5% | 1,169 |
Monthly on-time trend
Best time to fly from MFR to SFO
Aim for departures around 6 a.m. (89% on-time); avoid 2 p.m. departures (66%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 73% | 24 min |
| Tuesday | 75% | 20 min |
| Wednesday | 77% | 18 min |
| Thursday | 71% | 20 min |
| Friday | 76% | 18 min |
| Saturdaybest | 78% | 13 min |
| Sunday | 76% | 20 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft22%
- Airline operations25%
- National airspace system43%
- Weather10%
Frequently asked questions
- How often are flights from MFR to SFO delayed?
- 25% of MFR–SFO flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 19 minutes.
- Which airline is most reliable from MFR to SFO?
- United Airlines has the best on-time record on this route at 76%, based on 907 flights. 2 airlines flew MFR–SFO frequently enough to compare in this period.
- What is the best time of day to fly from MFR to SFO?
- Departures around 6 a.m. have the best record (89% on-time), while departures around 2 p.m. have the worst (66%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MFR to SFO?
- The scheduled MFR–SFO flight time averages 1h 30m over 329 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are MFR to SFO flights cancelled?
- 1.1% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from MFR to SFO?
- July 2026 was the roughest month in this dataset, with only 44% of arrivals on time. The best was September 2024 at 89%. If your dates are flexible, that 46-point gap is worth planning around.
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Based on 2,076 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.