Route · STS → SAN · 2020–2025 BTS data
Santa Rosa to San Diego
The STS–SAN corridor (Santa Rosa, CA → San Diego, CA) runs behind the national average, served by 5 carriers across roughly 508 miles.
Data updated 2026-06-13
- 77.9%
- On-time
- -1.1 pts
- vs US avg
- 62 min
- Delay when late
- 3,163
- Flights
Cancelled
2.4%
Best Month
Jul 2025 85%
Worst Month
Nov 2024 48%
Distance
508 mi
Carriers
5
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 52 | 17 | 5 | 1 | OO |
| Nov 2025 | 88 | 20 | 8 | 0 | OO |
| Oct 2025 | 86 | 16 | 4 | 0 | OO |
| Sep 2025 | 81 | 22 | 2 | 0 | OO |
| Aug 2025 | 71 | 16 | 0 | 0 | OO |
| Jul 2025 | 61 | 9 | 0 | 0 | OO |
| Jun 2025 | 59 | 18 | 0 | 0 | OO |
| May 2025 | 62 | 21 | 0 | 0 | OO |
| Apr 2025 | 60 | 17 | 1 | 1 | OO |
| Mar 2025 | 54 | 15 | 1 | 1 | OO |
| Feb 2025 | 44 | 9 | 4 | 0 | OO |
| Jan 2025 | 53 | 12 | 4 | 1 | OO |
| Dec 2024 | 68 | 18 | 2 | 2 | OO |
| Nov 2024 | 79 | 41 | 2 | 0 | OO |
| Oct 2024 | 79 | 23 | 2 | 0 | OO |
| Sep 2024 | 60 | 19 | 0 | 0 | OO |
| Aug 2024 | 62 | 14 | 0 | 1 | OO |
| Jul 2024 | 62 | 18 | 0 | 0 | OO |
| Jun 2024 | 48 | 12 | 0 | 0 | OO |
| May 2024 | 46 | 14 | 1 | 0 | OO |
| Apr 2024 | 58 | 10 | 0 | 0 | OO |
| Mar 2024 | 54 | 17 | 0 | 0 | OO |
| Feb 2024 | 46 | 14 | 0 | 0 | OO |
| Jan 2024 | 51 | 10 | 0 | 0 | OO |
Cancellation Rate
2.4%
36 of 1,484 flights
Diversion Rate
0.5%
7 of 1,484 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
STS - Santa Rosa
Full on-time, delay-cause, and seasonal performance for Santa Rosa, 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 STS 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 STS–SAN.
Routes with a similar on-time rate
What the Data Says About STS to SAN
The Santa Rosa to San Diego corridor (STS to SAN) posts a 77.9% on-time rate on the lower edge of the average band, based on 3,163 tracked flights. Late flights run 62.1 minutes behind on average. 5 carriers cover the 508-mile route; over the last 24 months, 36 of 1,484 flights were cancelled (2.4%) and 0.5% diverted.
The monthly split is wide on this route: Jul 2025 posted the strongest performance at 85% on-time, while Nov 2024 came in at just 48% - a 37-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.