Route · AUS → STL · 2020–2025 BTS data
Austin to St. Louis
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), AUS to STL (Austin to St. Louis) ranks #2162 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 84.8%
- On-time
- +5.8 pts
- vs US avg
- 55 min
- Delay when late
- 5,795
- Flights
- #2162 of 4927
- Corpus placement
Cancelled
0.3%
Best Month
Sep 2024 93%
Worst Month
Jul 2024 70%
Distance
721 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 91 | 17 | 0 | 0 | WN |
| Nov 2025 | 85 | 17 | 0 | 0 | WN |
| Oct 2025 | 83 | 14 | 0 | 0 | WN |
| Sep 2025 | 73 | 15 | 0 | 0 | WN |
| Aug 2025 | 76 | 17 | 0 | 0 | WN |
| Jul 2025 | 93 | 28 | 0 | 0 | WN |
| Jun 2025 | 91 | 21 | 0 | 0 | WN |
| May 2025 | 90 | 15 | 0 | 0 | WN |
| Apr 2025 | 87 | 11 | 1 | 0 | WN |
| Mar 2025 | 78 | 12 | 0 | 0 | WN |
| Feb 2025 | 60 | 15 | 0 | 0 | WN |
| Jan 2025 | 63 | 7 | 3 | 0 | WN |
| Dec 2024 | 77 | 10 | 0 | 0 | WN |
| Nov 2024 | 78 | 12 | 0 | 0 | WN |
| Oct 2024 | 85 | 10 | 0 | 0 | WN |
| Sep 2024 | 73 | 5 | 0 | 0 | WN |
| Aug 2024 | 76 | 6 | 0 | 0 | WN |
| Jul 2024 | 89 | 27 | 0 | 1 | WN |
| Jun 2024 | 86 | 12 | 0 | 0 | WN |
| May 2024 | 91 | 26 | 1 | 0 | WN |
| Apr 2024 | 83 | 13 | 0 | 0 | WN |
| Mar 2024 | 65 | 11 | 0 | 0 | WN |
| Feb 2024 | 49 | 5 | 0 | 0 | WN |
| Jan 2024 | 56 | 7 | 0 | 0 | WN |
AUS–STL seasonal on-time pattern
Best: February (88.5%) · weakest: July (80.0%)
Strongest calendar month
February
88.5% on-time · ~78 flights/mo
Busiest calendar month
October
~92 flights/mo avg
Weakest calendar month
July
80.0% on-time · ~83 flights/mo
Cancellation Rate
0.3%
5 of 1,878 flights
Diversion Rate
0.1%
1 of 1,878 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
AUS - Austin
Full on-time, delay-cause, and seasonal performance for Austin, TX.
AUS on-time profileSTL - St. Louis
Full on-time, delay-cause, and seasonal performance for St. Louis, MO.
STL on-time profileCompare the two airports
See AUS and STL side by side on delays, cancellations, and reliability.
Compare AUS vs STLOrigin-hub reliability standing
Mid-pack among AUS departures
From AUS, this corridor sits with 45 other 75–85% on-time routes out of 55 tracked departures, not the hub's reliability leaders (3 at ≥85%) and not the softest ( 7 below 75%). Destination: St. Louis · fleet on-time rank #1283 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to AUS–STL.
Routes with a similar on-time rate
What the Data Says About AUS to STL
Bureau of Transportation Statistics records show Austin to St. Louis (AUS to STL) running a 84.8% on-time rate over 5,795 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 55.3 minutes. The 721-mile corridor is served by 3 carriers, and over the last 24 months 0.3% of 1,878 flights were cancelled, 0.1% diverted.
The monthly split is wide on this route: Sep 2024 posted the strongest performance at 93% on-time, while Jul 2024 came in at just 70% - a 24-point swing worth factoring into travel timing.
On the multi-year calendar, AUS–STL peaks in February at 88.5% on-time while October carries the heaviest traffic (~92 flights per month) ; the softest month is July at 80.0%, a 8.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does AUS to STL rank among US routes by traffic? ▼
How often are flights delayed from AUS to STL? ▼
What is the cancellation rate for AUS to STL? ▼
How far is the flight from AUS to STL? ▼
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Airports on this route
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.
Using AUS–STL data
AUS–STL runs 5.8 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare AUS and STL airport profiles: delay causes and top routes differ even on the same corridor. AUS airport
- If your dates flex, February (88.5% on-time) beats July (80.0%) on this corridor. Seasonal chart
- 4 other routes post a similar 84.8% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
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.