Route · SAN → SFO · 2020–2025 BTS data
San Diego to San Francisco
The SAN–SFO corridor (San Diego, CA → San Francisco, CA) runs behind the national average, served by 26 carriers across roughly 447 miles.
Data updated 2026-06-13
- 77.3%
- On-time
- -1.7 pts
- vs US avg
- 62 min
- Delay when late
- 34,589
- Flights
Cancelled
1.3%
Best Month
Jan 2025 80%
Worst Month
Apr 2024 45%
Distance
447 mi
Carriers
26
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 485 | 152 | 5 | 0 | WN,F9,AS,UA,OO |
| Nov 2025 | 565 | 175 | 14 | 0 | OO,UA,F9,AS,WN |
| Oct 2025 | 662 | 225 | 9 | 2 | AS,OO,UA,WN,F9 |
| Sep 2025 | 581 | 152 | 11 | 0 | UA,WN,OO,F9,AS |
| Aug 2025 | 593 | 177 | 5 | 0 | OO,WN,F9,UA,AS |
| Jul 2025 | 582 | 208 | 6 | 0 | AS,OO,UA,WN,F9 |
| Jun 2025 | 578 | 183 | 2 | 0 | AS,OO,UA,WN,F9 |
| May 2025 | 597 | 131 | 1 | 0 | AS,OO,UA,WN,F9 |
| Apr 2025 | 527 | 116 | 0 | 0 | F9,OO,UA,WN,AS |
| Mar 2025 | 541 | 167 | 5 | 2 | AS,OO,UA,WN,F9 |
| Feb 2025 | 454 | 129 | 5 | 0 | AS,OO,UA,WN,F9 |
| Jan 2025 | 523 | 103 | 5 | 0 | AS,OO,UA,WN,F9 |
| Dec 2024 | 595 | 216 | 13 | 0 | AS,F9,OO,UA,WN |
| Nov 2024 | 586 | 212 | 3 | 5 | OO,UA,WN,AS,F9 |
| Oct 2024 | 578 | 222 | 9 | 0 | UA,AS,OO,WN,F9 |
| Sep 2024 | 574 | 179 | 2 | 0 | WN,OO,UA,AS,F9 |
| Aug 2024 | 568 | 131 | 1 | 1 | AS,F9,WN,OO,UA |
| Jul 2024 | 540 | 141 | 14 | 0 | AS,F9,OO,UA,WN |
| Jun 2024 | 428 | 175 | 0 | 2 | AS,F9,OO,UA,WN |
| May 2024 | 529 | 262 | 5 | 7 | AS,F9,OO,UA,WN |
| Apr 2024 | 549 | 304 | 10 | 2 | AS,F9,OO,UA,WN |
| Mar 2024 | 517 | 269 | 3 | 6 | AS,OO,UA,WN |
| Feb 2024 | 441 | 212 | 9 | 3 | OO,UA,WN |
| Jan 2024 | 459 | 126 | 29 | 0 | WN,OO,UA |
Cancellation Rate
1.3%
166 of 13,052 flights
Diversion Rate
0.2%
30 of 13,052 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SAN - San Diego
Full on-time, delay-cause, and seasonal performance for San Diego, CA.
Origin airport →SFO - San Francisco
Full on-time, delay-cause, and seasonal performance for San Francisco, CA.
Destination airport →Compare the two airports
See SAN 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 SAN–SFO.
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What the Data Says About SAN to SFO
The San Diego to San Francisco corridor (SAN to SFO) posts a 77.3% on-time rate on the lower edge of the average band, based on 34,589 tracked flights. Late flights run 62.0 minutes behind on average. 26 carriers cover the 447-mile route; over the last 24 months, 166 of 13,052 flights were cancelled (1.3%) and 0.2% diverted.
The monthly split is wide on this route: Jan 2025 posted the strongest performance at 80% on-time, while Apr 2024 came in at just 45% - a 36-point swing worth factoring into travel timing.
Frequently Asked Questions
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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.