Route · SFO → STL · 2020–2025 BTS data
San Francisco to St. Louis
The SFO–STL corridor (San Francisco, CA → St. Louis, MO) runs behind the national average, served by 8 carriers across roughly 1,735 miles.
Data updated 2026-06-13
- 74.8%
- On-time
- -4.2 pts
- vs US avg
- 57 min
- Delay when late
- 1,411
- Flights
Cancelled
1.1%
Best Month
Mar 2020 95%
Worst Month
Nov 2025 54%
Distance
1,735 mi
Carriers
8
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 61 | 24 | 0 | 0 | WN,UA,OO |
| Nov 2025 | 57 | 26 | 0 | 1 | UA,WN |
| Oct 2025 | 62 | 17 | 0 | 1 | OO,UA,WN |
| Sep 2025 | 60 | 17 | 0 | 0 | UA,WN,OO |
| Aug 2025 | 62 | 14 | 0 | 0 | WN,UA |
| Jul 2025 | 83 | 29 | 1 | 0 | UA,WN |
| Jun 2025 | 82 | 17 | 0 | 0 | UA,WN |
| May 2025 | 82 | 23 | 0 | 1 | UA,WN |
| Apr 2025 | 60 | 16 | 0 | 1 | UA,WN |
| Mar 2025 | 62 | 12 | 0 | 0 | UA,WN |
| Feb 2025 | 54 | 17 | 0 | 1 | UA,WN |
| Jan 2025 | 59 | 13 | 3 | 0 | UA,WN |
| Dec 2024 | 64 | 22 | 1 | 0 | UA,WN |
| Nov 2024 | 77 | 24 | 0 | 0 | UA,WN |
| Oct 2024 | 79 | 15 | 0 | 1 | UA,WN |
| Sep 2024 | 80 | 24 | 0 | 0 | WN,OO,UA |
| Aug 2024 | 53 | 13 | 0 | 1 | WN,UA |
| Jul 2024 | 31 | 5 | 0 | 0 | WN |
| Jun 2024 | 30 | 8 | 0 | 0 | WN |
| May 2024 | 31 | 6 | 0 | 0 | WN |
| Mar 2020 | 58 | 3 | 6 | 0 | WN,OO,UA |
| Feb 2020 | 58 | 4 | 1 | 0 | WN,OO |
| Jan 2020 | 66 | 7 | 3 | 0 | WN,OO,UA |
Cancellation Rate
1.1%
15 of 1,411 flights
Diversion Rate
0.5%
7 of 1,411 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SFO - San Francisco
Full on-time, delay-cause, and seasonal performance for San Francisco, CA.
Origin airport →STL - St. Louis
Full on-time, delay-cause, and seasonal performance for St. Louis, MO.
Destination airport →Compare the two airports
See SFO 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 SFO–STL.
Routes with a similar on-time rate
What the Data Says About SFO to STL
On-time performance on the SFO to STL pairing (San Francisco to St. Louis) trails a chunk of the network: 74.8% of 1,411 tracked flights arrived on schedule, with a 56.8-minute average delay on the ones that ran late. The route spans about 1,735 miles across 8 carriers. Cancellations over the trailing 24 months hit 1.1% (15 of 1,411 flights), with 0.5% diverted.
The monthly split is wide on this route: Mar 2020 posted the strongest performance at 95% on-time, while Nov 2025 came in at just 54% - a 40-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.