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Route · STL → CMH · 2020–2025 BTS data

St. Louis to Columbus

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), STL to CMH (St. Louis to Columbus) ranks #3342 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

82.3%
On-time
+3.3 pts
vs US avg
57 min
Delay when late
2,913
Flights
#3342 of 4927
Corpus placement

Cancelled

0.7%

Best Month

Sep 2025 95%

Worst Month

Jul 2024 65%

Distance

409 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 58 12 0 0 WN
Nov 2025 54 11 0 0 WN
Oct 2025 58 4 0 0 WN
Sep 2025 56 3 0 0 WN
Aug 2025 56 7 0 0 WN
Jul 2025 57 13 0 1 WN
Jun 2025 56 14 0 0 WN
May 2025 56 16 0 0 WN
Apr 2025 55 8 0 0 WN
Mar 2025 53 10 0 0 WN
Feb 2025 52 8 1 0 WN
Jan 2025 58 10 5 0 WN
Dec 2024 58 8 0 0 WN
Nov 2024 55 10 0 0 WN
Oct 2024 58 6 0 0 WN
Sep 2024 55 6 0 0 WN
Aug 2024 57 7 0 0 WN
Jul 2024 57 20 0 0 WN
Jun 2024 53 10 0 0 WN
May 2024 50 20 0 0 WN
Apr 2024 49 11 0 0 WN
Mar 2024 53 9 0 0 WN
Feb 2024 54 7 0 0 WN
Jan 2024 58 11 3 0 WN

STL–CMH seasonal on-time pattern

Best: September (88.5%) · weakest: July (72.7%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 81.6%

Strongest calendar month

September

88.5% on-time · ~55 flights/mo

Busiest calendar month

October

~58 flights/mo avg

Weakest calendar month

July

72.7% on-time · ~50 flights/mo

Cancellation Rate

0.7%

9 of 1,326 flights

Diversion Rate

0.1%

1 of 1,326 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.

STL on-time profile

CMH - Columbus

Full on-time, delay-cause, and seasonal performance for Columbus, OH.

CMH on-time profile

Compare the two airports

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

Compare STL vs CMH

Origin-hub reliability standing

Mid-pack among STL departures

From STL, this corridor sits with 45 other 75–85% on-time routes out of 51 tracked departures, not the hub's reliability leaders (5 at ≥85%) and not the softest ( 1 below 75%). Destination: Columbus · fleet on-time rank #2246 of 4927.

What the Data Says About STL to CMH

Bureau of Transportation Statistics records show St. Louis to Columbus (STL to CMH) running a 82.3% on-time rate over 2,913 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 56.8 minutes. The 409-mile corridor is served by 1 carrier, and over the last 24 months 0.7% of 1,326 flights were cancelled, 0.1% diverted.

The monthly split is wide on this route: Sep 2025 posted the strongest performance at 95% on-time, while Jul 2024 came in at just 65% - a 30-point swing worth factoring into travel timing.

On the multi-year calendar, STL–CMH peaks in September at 88.5% on-time while October carries the heaviest traffic (~58 flights per month) ; the softest month is July at 72.7%, a 15.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does STL to CMH rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, STL to CMH ranks #3342 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 STL to CMH? ▼
Flights from St. Louis to Columbus have a 82.3% on-time rate based on 2,913 flights. The average delay is 56.8 minutes. The best recent month was Sep 2025 with 95% on-time.
What is the cancellation rate for STL to CMH? ▼
Over the last 24 months, 0.7% of flights on this route were cancelled (9 of 1,326 flights) and 0.1% were diverted.
How far is the flight from STL to CMH? ▼
The flight distance from St. Louis (STL) to Columbus (CMH) is approximately 409 miles. This route is served by 1 carrier.
When is the best time to fly from STL to CMH? ▼
The best recent month for on-time performance was Sep 2025 (95% on-time). The worst was Jul 2024 (65% on-time). Consider booking during months with historically better performance.

Airports on this route

STL Airport

St. Louis
CMH Airport

Columbus
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 STL–CMH data

STL–CMH runs 3.3 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare STL and CMH airport profiles: delay causes and top routes differ even on the same corridor. STL airport
  • If your dates flex, September (88.5% on-time) beats July (72.7%) on this corridor. Seasonal chart
  • 4 other routes post a similar 82.3% 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.