Route · STL → PHX · 2020–2025 BTS data
St. Louis to Phoenix
The STL–PHX corridor (St. Louis, MO → Phoenix, AZ) runs ahead of the national average, served by 18 carriers across roughly 1,262 miles.
Data updated 2026-06-13
- 81.9%
- On-time
- +2.9 pts
- vs US avg
- 77 min
- Delay when late
- 11,786
- Flights
Cancelled
0.5%
Best Month
Sep 2024 88%
Worst Month
Jul 2024 67%
Distance
1,262 mi
Carriers
18
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 206 | 60 | 0 | 0 | WN,F9,AA |
| Nov 2025 | 187 | 55 | 1 | 0 | F9,AA,WN |
| Oct 2025 | 200 | 50 | 0 | 1 | AA,OO,WN,F9 |
| Sep 2025 | 160 | 35 | 2 | 2 | WN,OO,AA |
| Aug 2025 | 165 | 42 | 0 | 0 | AA,OO,WN |
| Jul 2025 | 166 | 39 | 0 | 0 | AA,OO,WN |
| Jun 2025 | 169 | 46 | 0 | 1 | AA,OO,WN |
| May 2025 | 209 | 46 | 2 | 0 | AA,OO,WN |
| Apr 2025 | 207 | 45 | 0 | 0 | OO,WN,AA |
| Mar 2025 | 181 | 37 | 0 | 0 | AA,OO,WN |
| Feb 2025 | 180 | 28 | 0 | 0 | AA,OO,WN |
| Jan 2025 | 194 | 28 | 11 | 0 | AA,WN |
| Dec 2024 | 215 | 37 | 0 | 1 | AA,OO,WN |
| Nov 2024 | 207 | 30 | 0 | 0 | OO,MQ,WN,AA |
| Oct 2024 | 204 | 29 | 0 | 0 | WN,AA |
| Sep 2024 | 176 | 21 | 1 | 0 | WN,AA |
| Aug 2024 | 187 | 37 | 1 | 1 | AA,F9,WN |
| Jul 2024 | 210 | 70 | 0 | 1 | AA,F9,WN |
| Jun 2024 | 209 | 52 | 1 | 0 | AA,F9,MQ,WN |
| May 2024 | 218 | 67 | 0 | 0 | AA,F9,MQ,WN |
| Apr 2024 | 205 | 35 | 1 | 0 | AA,F9,WN |
| Mar 2024 | 190 | 43 | 0 | 0 | AA,WN |
| Feb 2024 | 172 | 25 | 0 | 0 | AA,OO,WN |
| Jan 2024 | 190 | 42 | 4 | 0 | AA,MQ,WN,OO |
Cancellation Rate
0.5%
24 of 4,607 flights
Diversion Rate
0.2%
7 of 4,607 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
STL - St. Louis
Full on-time, delay-cause, and seasonal performance for St. Louis, MO.
Origin airport →PHX - Phoenix
Full on-time, delay-cause, and seasonal performance for Phoenix, AZ.
Destination airport →Compare the two airports
See STL 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 STL–PHX.
Routes with a similar on-time rate
What the Data Says About STL to PHX
11,786 tracked flights put the STL to PHX pairing (St. Louis to Phoenix) at a 81.9% on-time rate, squarely in line with the wider network. Delays that do occur run 77.4 minutes on average. Across the 1,262-mile route and its 18 carriers, the trailing 24 months show 0.5% cancelled and 0.2% diverted (4,607 flights sampled).
The monthly split is wide on this route: Sep 2024 posted the strongest performance at 88% on-time, while Jul 2024 came in at just 67% - a 21-point swing worth factoring into travel timing.
Frequently Asked Questions
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Flight Guides
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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.