Route · SJC → SAN · 2020–2025 BTS data
San Jose to San Diego
The SJC–SAN corridor (San Jose, CA → San Diego, CA) runs ahead of the national average, served by 19 carriers across roughly 417 miles.
Data updated 2026-06-13
- 82.2%
- On-time
- +3.2 pts
- vs US avg
- 55 min
- Delay when late
- 31,755
- Flights
Cancelled
0.9%
Best Month
Jan 2024 87%
Worst Month
Dec 2025 66%
Distance
417 mi
Carriers
19
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 396 | 136 | 7 | 1 | WN,OO |
| Nov 2025 | 452 | 121 | 12 | 0 | OO,WN |
| Oct 2025 | 434 | 142 | 6 | 3 | OO,WN |
| Sep 2025 | 398 | 84 | 7 | 0 | WN,OO |
| Aug 2025 | 441 | 122 | 0 | 0 | OO,WN,NK |
| Jul 2025 | 471 | 102 | 4 | 0 | NK,OO,WN |
| Jun 2025 | 474 | 119 | 4 | 0 | OO,WN,NK |
| May 2025 | 484 | 96 | 1 | 0 | NK,OO,WN |
| Apr 2025 | 467 | 103 | 2 | 1 | NK,OO,WN,AS |
| Mar 2025 | 458 | 93 | 4 | 2 | AS,OO,WN,NK |
| Feb 2025 | 396 | 83 | 0 | 1 | AS,OO,WN,NK |
| Jan 2025 | 433 | 59 | 7 | 1 | AS,OO,WN,NK |
| Dec 2024 | 469 | 121 | 18 | 4 | F9,NK,OO,WN |
| Nov 2024 | 474 | 102 | 2 | 1 | OO,NK,WN,AS,F9 |
| Oct 2024 | 529 | 177 | 9 | 4 | AS,OO,WN,NK,F9 |
| Sep 2024 | 514 | 112 | 0 | 0 | WN,NK,OO,F9 |
| Aug 2024 | 546 | 101 | 3 | 1 | F9,NK,WN,OO |
| Jul 2024 | 522 | 138 | 4 | 0 | F9,NK,OO,WN |
| Jun 2024 | 494 | 159 | 4 | 0 | NK,OO,WN |
| May 2024 | 490 | 81 | 0 | 1 | NK,OO,WN |
| Apr 2024 | 449 | 73 | 1 | 0 | NK,OO,WN |
| Mar 2024 | 447 | 94 | 3 | 0 | NK,OO,WN |
| Feb 2024 | 404 | 59 | 6 | 0 | NK,OO,WN |
| Jan 2024 | 431 | 58 | 1 | 1 | NK,WN,OO |
Cancellation Rate
0.9%
105 of 11,073 flights
Diversion Rate
0.2%
21 of 11,073 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SJC - San Jose
Full on-time, delay-cause, and seasonal performance for San Jose, CA.
Origin airport →SAN - San Diego
Full on-time, delay-cause, and seasonal performance for San Diego, CA.
Destination airport →Compare the two airports
See SJC and SAN side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to SJC–SAN.
Routes with a similar on-time rate
What the Data Says About SJC to SAN
Bureau of Transportation Statistics records show San Jose to San Diego (SJC to SAN) running a 82.2% on-time rate over 31,755 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 54.8 minutes. The 417-mile corridor is served by 19 carriers, and over the last 24 months 0.9% of 11,073 flights were cancelled, 0.2% diverted.
The monthly split is wide on this route: Jan 2024 posted the strongest performance at 87% on-time, while Dec 2025 came in at just 66% - a 21-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.