Route · CMH → SFO · 2020–2025 BTS data
Columbus to San Francisco
The CMH–SFO corridor (Columbus, OH → San Francisco, CA) runs behind the national average, served by 1 carrier across roughly 2,120 miles.
Data updated 2026-06-13
- 67.4%
- On-time
- -11.6 pts
- vs US avg
- 75 min
- Delay when late
- 1,015
- Flights
Cancelled
1.1%
Best Month
N/A
Worst Month
N/A
Distance
2,120 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Nov 2025 | 33 | 9 | 0 | 0 | UA |
| Oct 2025 | 31 | 6 | 0 | 0 | UA |
| Sep 2025 | 33 | 10 | 0 | 0 | UA |
| Aug 2025 | 32 | 7 | 1 | 0 | UA |
| Jul 2025 | 31 | 23 | 0 | 0 | UA |
| Jun 2025 | 30 | 13 | 0 | 0 | UA |
| May 2025 | 31 | 16 | 0 | 1 | UA |
| Apr 2025 | 30 | 8 | 0 | 0 | UA |
| Nov 2024 | 30 | 13 | 0 | 0 | UA |
| Oct 2024 | 31 | 12 | 0 | 0 | UA |
| Sep 2024 | 30 | 7 | 0 | 0 | UA |
| Aug 2024 | 31 | 12 | 0 | 0 | UA |
| Jul 2024 | 31 | 7 | 4 | 0 | UA |
| Jun 2024 | 30 | 4 | 1 | 0 | UA |
| May 2024 | 31 | 8 | 0 | 0 | UA |
| Apr 2024 | 30 | 12 | 0 | 0 | UA |
| Mar 2024 | 31 | 14 | 0 | 0 | UA |
| Nov 2023 | 30 | 4 | 0 | 0 | UA |
| Oct 2023 | 31 | 2 | 0 | 0 | UA |
| Sep 2023 | 30 | 3 | 0 | 0 | UA |
| Aug 2023 | 31 | 6 | 0 | 0 | UA |
| Jul 2023 | 31 | 7 | 1 | 0 | UA |
| Jun 2023 | 30 | 4 | 0 | 0 | UA |
| May 2023 | 31 | 20 | 1 | 0 | UA |
Cancellation Rate
1.1%
8 of 740 flights
Diversion Rate
0.1%
1 of 740 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
CMH - Columbus
Full on-time, delay-cause, and seasonal performance for Columbus, OH.
Origin airport →SFO - San Francisco
Full on-time, delay-cause, and seasonal performance for San Francisco, CA.
Destination airport →Compare the two airports
See CMH and SFO side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to CMH–SFO.
Routes with a similar on-time rate
What the Data Says About CMH to SFO
On-time performance on the CMH to SFO pairing (Columbus to San Francisco) trails a chunk of the network: 67.4% of 1,015 tracked flights arrived on schedule, with a 75.0-minute average delay on the ones that ran late. The route spans about 2,120 miles across 1 carrier. Cancellations over the trailing 24 months hit 1.1% (8 of 740 flights), with 0.1% diverted.
Monthly performance data for this route did not show a clear best/worst split in the sample window; review the monthly table above for period-by-period detail.
Frequently Asked Questions
How often are flights delayed from CMH to SFO? ▼
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.