Route · PHL → STL · 2020–2025 BTS data
Philadelphia to St. Louis
The PHL–STL corridor (Philadelphia, PA → St. Louis, MO) runs ahead of the national average, served by 29 carriers across roughly 814 miles.
Data updated 2026-06-13
- 82%
- On-time
- +3 pts
- vs US avg
- 73 min
- Delay when late
- 8,263
- Flights
Cancelled
1.6%
Best Month
Nov 2024 89%
Worst Month
Jun 2025 63%
Distance
814 mi
Carriers
29
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 150 | 53 | 1 | 1 | YX,OH,WN,AA |
| Nov 2025 | 163 | 32 | 2 | 0 | OH,AA,WN,YX |
| Oct 2025 | 147 | 27 | 0 | 0 | AA,WN,YX |
| Sep 2025 | 132 | 28 | 0 | 0 | WN,AA |
| Aug 2025 | 142 | 39 | 0 | 0 | AA,WN,YX |
| Jul 2025 | 135 | 50 | 3 | 0 | AA,WN,YX |
| Jun 2025 | 132 | 49 | 2 | 0 | AA,OH,WN,YX |
| May 2025 | 118 | 24 | 2 | 0 | AA,OH,WN |
| Apr 2025 | 115 | 24 | 0 | 1 | OH,WN,AA |
| Mar 2025 | 105 | 22 | 1 | 1 | OH,WN |
| Feb 2025 | 78 | 18 | 3 | 0 | OH,WN,YX |
| Jan 2025 | 91 | 17 | 10 | 0 | OH,WN,YX |
| Dec 2024 | 132 | 26 | 0 | 0 | AA,OH,WN,YX |
| Nov 2024 | 130 | 14 | 0 | 0 | WN,YX,OH,AA |
| Oct 2024 | 187 | 22 | 0 | 0 | WN,YX,AA,OH |
| Sep 2024 | 172 | 28 | 0 | 0 | WN,YX,AA |
| Aug 2024 | 201 | 50 | 7 | 0 | AA,F9,WN,YX |
| Jul 2024 | 198 | 65 | 10 | 1 | AA,F9,WN,YX |
| Jun 2024 | 184 | 39 | 5 | 1 | AA,F9,WN,YX |
| May 2024 | 119 | 31 | 2 | 0 | AA,F9,WN |
| Apr 2024 | 85 | 20 | 0 | 0 | AA,WN |
| Mar 2024 | 81 | 18 | 0 | 0 | AA,WN |
| Feb 2024 | 62 | 9 | 0 | 0 | AA,WN |
| Jan 2024 | 73 | 26 | 1 | 0 | AA,WN |
Cancellation Rate
1.6%
49 of 3,132 flights
Diversion Rate
0.2%
5 of 3,132 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
PHL - Philadelphia
Full on-time, delay-cause, and seasonal performance for Philadelphia, PA.
Origin airport →STL - St. Louis
Full on-time, delay-cause, and seasonal performance for St. Louis, MO.
Destination airport →Compare the two airports
See PHL and STL side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to PHL–STL.
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Routes of a similar trip length
What the Data Says About PHL to STL
Bureau of Transportation Statistics records show Philadelphia to St. Louis (PHL to STL) running a 82% on-time rate over 8,263 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 73.1 minutes. The 814-mile corridor is served by 29 carriers, and over the last 24 months 1.6% of 3,132 flights were cancelled, 0.2% diverted.
The monthly split is wide on this route: Nov 2024 posted the strongest performance at 89% on-time, while Jun 2025 came in at just 63% - a 26-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.