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Route · HOU → STL · 2020–2025 BTS data

Houston to St. Louis

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), HOU to STL (Houston to St. Louis) ranks #1655 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

83.7%
On-time
+4.7 pts
vs US avg
56 min
Delay when late
7,598
Flights
#1655 of 4927
Corpus placement

Cancelled

1.0%

Best Month

Oct 2024 94%

Worst Month

May 2024 69%

Distance

687 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 138 19 0 0 WN
Nov 2025 132 14 1 0 WN
Oct 2025 123 26 0 0 WN
Sep 2025 125 15 0 0 WN
Aug 2025 130 30 0 1 WN
Jul 2025 144 31 0 1 WN
Jun 2025 139 32 1 0 WN
May 2025 131 20 3 0 WN
Apr 2025 125 14 0 0 WN
Mar 2025 135 21 0 0 WN
Feb 2025 109 14 2 0 WN
Jan 2025 106 11 12 0 WN
Dec 2024 135 24 1 0 WN
Nov 2024 122 10 0 0 WN
Oct 2024 135 8 0 0 WN
Sep 2024 125 13 0 0 WN
Aug 2024 130 14 0 0 WN
Jul 2024 143 32 6 1 WN
Jun 2024 139 26 0 0 WN
May 2024 131 40 2 0 WN
Apr 2024 128 18 0 0 WN
Mar 2024 129 13 1 0 WN
Feb 2024 112 12 0 0 WN
Jan 2024 119 20 3 0 WN

HOU–STL seasonal on-time pattern

Best: November (90.0%) · weakest: June (77.8%)

75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 83.4%

Strongest calendar month

November

90.0% on-time · ~106 flights/mo

Busiest calendar month

July

~120 flights/mo avg

Weakest calendar month

June

77.8% on-time · ~108 flights/mo

Cancellation Rate

1.0%

32 of 3,085 flights

Diversion Rate

0.1%

3 of 3,085 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

HOU - Houston

Full on-time, delay-cause, and seasonal performance for Houston, TX.

HOU on-time profile

STL - St. Louis

Full on-time, delay-cause, and seasonal performance for St. Louis, MO.

STL on-time profile

Compare the two airports

See HOU and STL side by side on delays, cancellations, and reliability.

Compare HOU vs STL

Origin-hub reliability standing

Mid-pack among HOU departures

From HOU, this corridor sits with 43 other 75–85% on-time routes out of 50 tracked departures, not the hub's reliability leaders (1 at ≥85%) and not the softest ( 6 below 75%). Destination: St. Louis · fleet on-time rank #1690 of 4927.

What the Data Says About HOU to STL

Bureau of Transportation Statistics records show Houston to St. Louis (HOU to STL) running a 83.7% on-time rate over 7,598 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 56.1 minutes. The 687-mile corridor is served by 1 carrier, and over the last 24 months 1.0% of 3,085 flights were cancelled, 0.1% diverted.

The monthly split is wide on this route: Oct 2024 posted the strongest performance at 94% on-time, while May 2024 came in at just 69% - a 25-point swing worth factoring into travel timing.

On the multi-year calendar, HOU–STL peaks in November at 90.0% on-time while July carries the heaviest traffic (~120 flights per month) ; the softest month is June at 77.8%, a 12.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does HOU to STL rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, HOU to STL ranks #1655 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from HOU to STL? ▼
Flights from Houston to St. Louis have a 83.7% on-time rate based on 7,598 flights. The average delay is 56.1 minutes. The best recent month was Oct 2024 with 94% on-time.
What is the cancellation rate for HOU to STL? ▼
Over the last 24 months, 1.0% of flights on this route were cancelled (32 of 3,085 flights) and 0.1% were diverted.
How far is the flight from HOU to STL? ▼
The flight distance from Houston (HOU) to St. Louis (STL) is approximately 687 miles. This route is served by 1 carrier.
When is the best time to fly from HOU to STL? ▼
The best recent month for on-time performance was Oct 2024 (94% on-time). The worst was May 2024 (69% on-time). Consider booking during months with historically better performance.

Airports on this route

HOU Airport

Houston
STL Airport

St. Louis
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 HOU–STL data

HOU–STL runs 4.7 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare HOU and STL airport profiles: delay causes and top routes differ even on the same corridor. HOU airport
  • If your dates flex, November (90.0% on-time) beats June (77.8%) on this corridor. Seasonal chart
  • 4 other routes post a similar 83.7% 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.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

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.