Route · STL → MIA · 2020–2025 BTS data
St. Louis to Miami
The STL–MIA corridor (St. Louis, MO → Miami, FL) runs ahead of the national average, served by 15 carriers across roughly 1,068 miles.
Data updated 2026-06-13
- 81.1%
- On-time
- +2.1 pts
- vs US avg
- 74 min
- Delay when late
- 4,917
- Flights
Cancelled
1.1%
Best Month
Nov 2024 93%
Worst Month
Mar 2024 69%
Distance
1,068 mi
Carriers
15
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 99 | 21 | 0 | 0 | YX,WN,AA,MQ |
| Nov 2025 | 105 | 19 | 0 | 0 | MQ,AA,WN,YX |
| Oct 2025 | 84 | 14 | 0 | 0 | AA,WN |
| Sep 2025 | 68 | 9 | 0 | 2 | WN,AA |
| Aug 2025 | 73 | 15 | 0 | 1 | WN,AA,MQ |
| Jul 2025 | 74 | 14 | 0 | 0 | AA,WN,MQ |
| Jun 2025 | 78 | 12 | 1 | 0 | AA,WN,MQ |
| May 2025 | 102 | 23 | 0 | 0 | AA,WN,MQ |
| Apr 2025 | 99 | 14 | 1 | 0 | MQ,WN,AA |
| Mar 2025 | 106 | 24 | 1 | 3 | AA,WN,MQ |
| Feb 2025 | 88 | 15 | 1 | 0 | AA,WN,MQ |
| Jan 2025 | 97 | 14 | 5 | 0 | AA,WN,MQ |
| Dec 2024 | 93 | 27 | 0 | 0 | AA,MQ,WN |
| Nov 2024 | 89 | 6 | 0 | 0 | MQ,WN,AA |
| Oct 2024 | 67 | 7 | 0 | 0 | WN,AA |
| Sep 2024 | 60 | 6 | 0 | 0 | WN,AA |
| Aug 2024 | 63 | 9 | 2 | 2 | AA,WN |
| Jul 2024 | 66 | 11 | 1 | 1 | AA,WN |
| Jun 2024 | 68 | 18 | 3 | 0 | AA,MQ,WN |
| May 2024 | 88 | 27 | 0 | 0 | AA,MQ,WN |
| Apr 2024 | 69 | 11 | 0 | 0 | AA,WN |
| Mar 2024 | 107 | 33 | 5 | 1 | AA,WN |
| Feb 2024 | 95 | 20 | 0 | 0 | AA,WN,YX |
| Jan 2024 | 93 | 26 | 2 | 0 | AA,WN,YX |
Cancellation Rate
1.1%
22 of 2,031 flights
Diversion Rate
0.5%
10 of 2,031 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 →MIA - Miami
Full on-time, delay-cause, and seasonal performance for Miami, FL.
Destination airport →Compare the two airports
See STL and MIA 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–MIA.
Routes with a similar on-time rate
What the Data Says About STL to MIA
4,917 tracked flights put the STL to MIA pairing (St. Louis to Miami) at a 81.1% on-time rate, squarely in line with the wider network. Delays that do occur run 73.5 minutes on average. Across the 1,068-mile route and its 15 carriers, the trailing 24 months show 1.1% cancelled and 0.5% diverted (2,031 flights sampled).
The monthly split is wide on this route: Nov 2024 posted the strongest performance at 93% on-time, while Mar 2024 came in at just 69% - a 24-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.