Route · STS → PHX · 2020–2025 BTS data
Santa Rosa to Phoenix
The STS–PHX corridor (Santa Rosa, CA → Phoenix, AZ) runs ahead of the national average, served by 10 carriers across roughly 699 miles.
Data updated 2026-06-13
- 83.6%
- On-time
- +4.6 pts
- vs US avg
- 93 min
- Delay when late
- 2,725
- Flights
Cancelled
0.3%
Best Month
Aug 2025 92%
Worst Month
Jul 2025 62%
Distance
699 mi
Carriers
10
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 48 | 12 | 0 | 0 | MQ |
| Nov 2025 | 51 | 12 | 1 | 0 | MQ |
| Oct 2025 | 61 | 19 | 0 | 0 | OO,MQ |
| Sep 2025 | 56 | 10 | 1 | 1 | MQ,OO |
| Aug 2025 | 62 | 5 | 0 | 0 | AA,OO,MQ |
| Jul 2025 | 61 | 23 | 0 | 0 | AA,OO |
| Jun 2025 | 60 | 17 | 0 | 0 | AA,OO,MQ |
| May 2025 | 62 | 8 | 0 | 0 | AA,MQ |
| Apr 2025 | 60 | 13 | 0 | 0 | MQ,AA |
| Mar 2025 | 62 | 14 | 0 | 1 | AA,OO,MQ |
| Feb 2025 | 44 | 8 | 0 | 0 | AA,OO,MQ |
| Jan 2025 | 33 | 3 | 0 | 0 | OO,MQ |
| Dec 2024 | 57 | 8 | 0 | 0 | MQ,OO |
| Nov 2024 | 54 | 12 | 0 | 0 | OO,MQ |
| Oct 2024 | 31 | 6 | 0 | 0 | MQ,OO |
| Sep 2024 | 30 | 1 | 0 | 0 | MQ |
| Aug 2024 | 31 | 5 | 0 | 0 | MQ,OO |
| Jul 2024 | 31 | 6 | 0 | 0 | MQ,OO |
| Jun 2024 | 30 | 6 | 0 | 0 | MQ,OO |
| May 2024 | 36 | 10 | 0 | 0 | MQ,OO |
| Apr 2024 | 57 | 7 | 0 | 0 | MQ,OO |
| Mar 2024 | 31 | 5 | 0 | 0 | OO |
| Jan 2024 | 38 | 7 | 0 | 0 | OO |
| Dec 2023 | 60 | 14 | 1 | 0 | OO,MQ |
Cancellation Rate
0.3%
3 of 1,146 flights
Diversion Rate
0.2%
2 of 1,146 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 →PHX - Phoenix
Full on-time, delay-cause, and seasonal performance for Phoenix, AZ.
Destination airport →Compare the two airports
See STS and PHX 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–PHX.
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What the Data Says About STS to PHX
Bureau of Transportation Statistics records show Santa Rosa to Phoenix (STS to PHX) running a 83.6% on-time rate over 2,725 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 92.5 minutes. The 699-mile corridor is served by 10 carriers, and over the last 24 months 0.3% of 1,146 flights were cancelled, 0.2% diverted.
The monthly split is wide on this route: Aug 2025 posted the strongest performance at 92% on-time, while Jul 2025 came in at just 62% - a 30-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.