Columbus (CMH) to San Francisco (SFO): On-Time Performance
Data through July 2026
Columbus (CMH) to San Francisco (SFO) is a thinner route than most in this dataset — 322 departures over the past year, roughly 6 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 61% arrived on time, noticeably below the national average of 78%.
- On-time
- 61%
- arrived <15 min late
- Avg delay
- 31 min
- completed flights
- Cancelled
- 1.0%
- Flights/day
- 0.88
- 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 (49%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 55% | 30 min |
| Tuesday | 63% | 25 min |
| Wednesday | 68% | 30 min |
| Thursday | 54% | 53 min |
| Friday | 56% | 27 min |
| Saturdaybest | 77% | 19 min |
| Sunday | 60% | 29 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft26%
- Airline operations37%
- National airspace system34%
- Weather3%
Frequently asked questions
- How often are flights from CMH to SFO delayed?
- 39% of CMH–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 31 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 (49%). 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 39% of the time.
- How often are CMH to SFO flights cancelled?
- 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 CMH to SFO?
- July 2025 was the roughest month in this dataset, with only 26% of arrivals on time. The best was October 2025 at 81%. If your dates are flexible, that 55-point gap is worth planning around.
Explore related pages
More routes from CMH
Other ways to fly to San Francisco (SFO)
Related guides
Based on 601 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.