Route · STL → PIT · 2020–2025 BTS data
St. Louis to Pittsburgh
The STL–PIT corridor (St. Louis, MO → Pittsburgh, PA) runs ahead of the national average, served by 1 carrier across roughly 554 miles.
Data updated 2026-06-13
- 82.4%
- On-time
- +3.4 pts
- vs US avg
- 62 min
- Delay when late
- 1,529
- Flights
Cancelled
0.3%
Best Month
N/A
Worst Month
N/A
Distance
554 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 6 | 0 | 0 | WN |
| Nov 2025 | 31 | 3 | 0 | 0 | WN |
| Oct 2025 | 35 | 9 | 0 | 0 | WN |
| Sep 2025 | 34 | 3 | 0 | 0 | WN |
| Aug 2025 | 35 | 3 | 0 | 0 | WN |
| Jul 2025 | 35 | 8 | 1 | 0 | WN |
| Jun 2025 | 34 | 12 | 0 | 0 | WN |
| May 2025 | 31 | 10 | 0 | 0 | WN |
| Apr 2025 | 30 | 4 | 0 | 0 | WN |
| Mar 2025 | 31 | 7 | 0 | 0 | WN |
| Dec 2024 | 32 | 5 | 0 | 0 | WN |
| Nov 2024 | 30 | 5 | 0 | 0 | WN |
| Oct 2024 | 35 | 1 | 0 | 0 | WN |
| Sep 2024 | 34 | 3 | 0 | 0 | WN |
| Aug 2024 | 35 | 3 | 1 | 0 | WN |
| Jul 2024 | 35 | 8 | 0 | 0 | WN |
| Jun 2024 | 34 | 10 | 0 | 0 | WN |
| May 2024 | 31 | 13 | 0 | 0 | WN |
| Apr 2024 | 30 | 6 | 0 | 0 | WN |
| Mar 2024 | 31 | 5 | 0 | 1 | WN |
| Jan 2024 | 31 | 8 | 0 | 0 | WN |
| Dec 2023 | 31 | 1 | 0 | 0 | WN |
| Nov 2023 | 30 | 3 | 0 | 0 | WN |
| Oct 2023 | 36 | 4 | 0 | 0 | WN |
Cancellation Rate
0.3%
2 of 782 flights
Diversion Rate
0.1%
1 of 782 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 →PIT - Pittsburgh
Full on-time, delay-cause, and seasonal performance for Pittsburgh, PA.
Destination airport →Compare the two airports
See STL and PIT 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–PIT.
Routes with a similar on-time rate
What the Data Says About STL to PIT
Bureau of Transportation Statistics records show St. Louis to Pittsburgh (STL to PIT) running a 82.4% on-time rate over 1,529 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 61.9 minutes. The 554-mile corridor is served by 1 carrier, and over the last 24 months 0.3% of 782 flights were cancelled, 0.1% diverted.
Monthly performance data for this route did not show a clear best/worst split in the sample window; review the monthly table above for period-by-period detail.
Frequently Asked Questions
How often are flights delayed from STL to PIT? ▼
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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.