Columbus (CMH) to San Francisco (SFO): On-Time Performance
Data through May 2026
Columbus (CMH) to San Francisco (SFO) is a thinner route than most in this dataset — 287 departures over the past year, roughly 6 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 64% arrived on time, noticeably below the national average of 78%.
- On-time
- 64%
- arrived <15 min late
- Avg delay
- 25 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 0.79
- last 12 months
- Duration
- 5h 8m
- scheduled
- Distance
- 2,120 mi
Monthly on-time trend
Best time to fly from CMH to SFO
Aim for departures around 5 p.m. (73% on-time); avoid 7 p.m. departures (58%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 60% | 24 min |
| Tuesday | 66% | 17 min |
| Wednesday | 66% | 32 min |
| Thursday | 62% | 36 min |
| Friday | 62% | 18 min |
| Saturdaybest | 75% | 19 min |
| Sunday | 61% | 25 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft29%
- Airline operations40%
- National airspace system29%
- Weather2%
Frequently asked questions
- How often are flights from CMH to SFO delayed?
- 36% of CMH–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 25 minutes.
- What is the best time of day to fly from CMH to SFO?
- Departures around 5 p.m. have the best record (73% on-time), while departures around 7 p.m. have the worst (58%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from CMH to SFO?
- The scheduled CMH–SFO flight time averages 5h 8m over 2,120 miles. Actual arrival times vary — flights on this route land 15+ minutes late 36% of the time.
- How often are CMH to SFO flights cancelled?
- 1.3% 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 CMH to SFO?
- July 2025 was the roughest month in this dataset, with only 26% of arrivals on time. The best was June 2024 at 86%. If your dates are flexible, that 60-point gap is worth planning around.
Explore related pages
More routes from CMH
Based on 535 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.