Route · PHX → STS · 2020–2025 BTS data
Phoenix to Santa Rosa
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), PHX to STS (Phoenix to Santa Rosa) ranks #3428 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 85.1%
- On-time
- +6.1 pts
- vs US avg
- 64 min
- Delay when late
- 2,725
- Flights
- #3428 of 4927
- Corpus placement
Cancelled
0.3%
Best Month
Apr 2024 91%
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 | 8 | 0 | 1 | MQ |
| Nov 2025 | 51 | 5 | 1 | 0 | MQ |
| Oct 2025 | 61 | 16 | 0 | 2 | OO,MQ |
| Sep 2025 | 56 | 7 | 1 | 0 | MQ,OO |
| Aug 2025 | 62 | 7 | 0 | 0 | AA,OO,MQ |
| Jul 2025 | 61 | 23 | 0 | 1 | AA,OO |
| Jun 2025 | 60 | 15 | 0 | 0 | AA,OO,MQ |
| May 2025 | 62 | 9 | 0 | 0 | AA,MQ |
| Apr 2025 | 60 | 8 | 0 | 0 | MQ,AA |
| Mar 2025 | 62 | 12 | 0 | 0 | AA,OO,MQ |
| Feb 2025 | 44 | 7 | 0 | 1 | AA,OO,MQ |
| Jan 2025 | 33 | 2 | 0 | 0 | OO,MQ |
| Dec 2024 | 57 | 8 | 0 | 1 | MQ,OO |
| Nov 2024 | 54 | 11 | 0 | 0 | OO,MQ |
| Oct 2024 | 31 | 5 | 0 | 0 | MQ,OO |
| Sep 2024 | 30 | 1 | 0 | 0 | MQ |
| Aug 2024 | 31 | 2 | 0 | 0 | MQ,OO |
| Jul 2024 | 31 | 1 | 0 | 1 | MQ,OO |
| Jun 2024 | 30 | 3 | 0 | 0 | MQ,OO |
| May 2024 | 36 | 7 | 0 | 0 | MQ,OO |
| Apr 2024 | 57 | 5 | 0 | 0 | MQ,OO |
| Mar 2024 | 31 | 4 | 0 | 0 | OO |
| Jan 2024 | 38 | 12 | 0 | 1 | OO |
| Dec 2023 | 60 | 10 | 1 | 3 | OO,MQ |
PHX–STS seasonal on-time pattern
Best: August (90.6%) · weakest: October (79.9%)
Strongest calendar month
August
90.6% on-time · ~43 flights/mo
Busiest calendar month
October
~49 flights/mo avg
Weakest calendar month
October
79.9% on-time · ~49 flights/mo
Cancellation Rate
0.3%
3 of 1,146 flights
Diversion Rate
1.0%
11 of 1,146 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
PHX - Phoenix
Full on-time, delay-cause, and seasonal performance for Phoenix, AZ.
PHX on-time profileSTS - Santa Rosa
Full on-time, delay-cause, and seasonal performance for Santa Rosa, CA.
STS on-time profileCompare the two airports
See PHX and STS side by side on delays, cancellations, and reliability.
Compare PHX vs STSOrigin-hub reliability standing
Among PHX's stronger departures
PHX → STS posts a 85.1% on-time rate, landing in the ≥85% band with 25 of 97 BTS-tracked routes leaving Phoenix. The same hub also shows 71 mid-band and 1 challenged departures · fleet-wide on-time rank #1190 of 4927 (highest on-time = #1).
Similar routes
Other BTS-tracked routes with comparable performance or trip length to PHX–STS.
Routes with a similar on-time rate
What the Data Says About PHX to STS
Phoenix to Santa Rosa (PHX to STS) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 85.1% on-time rate across 2,725 flights, with delays that do happen averaging 63.7 minutes. The corridor runs roughly 699 miles and is served by 10 carriers. Over the most recent 24 months, 3 of 1,146 flights were cancelled (0.3%) and 11 diverted (1.0%).
The monthly split is wide on this route: Apr 2024 posted the strongest performance at 91% on-time, while Jul 2025 came in at just 62% - a 29-point swing worth factoring into travel timing.
On the multi-year calendar, PHX–STS peaks in August at 90.6% on-time while October carries the heaviest traffic (~49 flights per month) ; the softest month is October at 79.9%, a 10.7-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does PHX to STS rank among US routes by traffic? ▼
How often are flights delayed from PHX to STS? ▼
What is the cancellation rate for PHX to STS? ▼
How far is the flight from PHX to STS? ▼
When is the best time to fly from PHX to STS? ▼
Airports on this route
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.
Using PHX–STS data
PHX–STS runs 6.1 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare PHX and STS airport profiles: delay causes and top routes differ even on the same corridor. PHX airport
- If your dates flex, August (90.6% on-time) beats October (79.9%) on this corridor. Seasonal chart
- 4 other routes post a similar 85.1% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
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.