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Route · CLE → STL · 2020–2025 BTS data

Cleveland to St. Louis

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), CLE to STL (Cleveland to St. Louis) ranks #3273 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

87.1%
On-time
+8.1 pts
vs US avg
59 min
Delay when late
3,053
Flights
#3273 of 4927
Corpus placement

Cancelled

1.0%

Best Month

Sep 2024 96%

Worst Month

Dec 2024 69%

Distance

487 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 57 13 0 0 WN
Nov 2025 54 8 0 0 WN
Oct 2025 58 3 0 0 WN
Sep 2025 69 9 0 0 WN
Aug 2025 68 9 1 0 WN
Jul 2025 61 12 0 0 WN
Jun 2025 60 5 0 0 WN
May 2025 56 11 1 0 WN
Apr 2025 55 5 1 0 WN
Mar 2025 53 6 1 1 WN
Feb 2025 52 8 2 0 WN
Jan 2025 58 8 4 0 WN
Dec 2024 58 18 0 0 WN
Nov 2024 54 3 0 0 WN
Oct 2024 58 4 0 0 WN
Sep 2024 69 3 0 0 WN
Aug 2024 70 9 1 0 WN
Jul 2024 60 10 0 0 WN
Jun 2024 59 11 0 0 WN
May 2024 57 17 0 0 WN
Apr 2024 55 7 0 0 WN
Mar 2024 53 6 0 0 WN
Feb 2024 54 7 0 0 WN
Jan 2024 58 11 3 0 WN

CLE–STL seasonal on-time pattern

Best: March (92.7%) · weakest: December (79.5%)

75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 79.5%

Strongest calendar month

March

92.7% on-time · ~52 flights/mo

Busiest calendar month

August

~66 flights/mo avg

Weakest calendar month

December

79.5% on-time · ~52 flights/mo

Cancellation Rate

1.0%

14 of 1,406 flights

Diversion Rate

0.1%

1 of 1,406 flights

Explore origin & destination

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

CLE - Cleveland

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

CLE 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 CLE and STL side by side on delays, cancellations, and reliability.

Compare CLE vs STL

Origin-hub reliability standing

Among CLE's stronger departures

CLE → STL posts a 87.1% on-time rate, landing in the ≥85% band with 12 of 30 BTS-tracked routes leaving Cleveland. The same hub also shows 17 mid-band and 1 challenged departures · fleet-wide on-time rank #608 of 4927 (highest on-time = #1).

What the Data Says About CLE to STL

Cleveland to St. Louis (CLE to STL) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 87.1% on-time rate across 3,053 flights, with delays that do happen averaging 59.4 minutes. The corridor runs roughly 487 miles and is served by 1 carrier. Over the most recent 24 months, 14 of 1,406 flights were cancelled (1.0%) and 1 diverted (0.1%).

The monthly split is wide on this route: Sep 2024 posted the strongest performance at 96% on-time, while Dec 2024 came in at just 69% - a 27-point swing worth factoring into travel timing.

On the multi-year calendar, CLE–STL peaks in March at 92.7% on-time while August carries the heaviest traffic (~66 flights per month) ; the softest month is December at 79.5%, a 13.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does CLE to STL rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, CLE to STL ranks #3273 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 CLE to STL? ▼
Flights from Cleveland to St. Louis have a 87.1% on-time rate based on 3,053 flights. The average delay is 59.4 minutes. The best recent month was Sep 2024 with 96% on-time.
What is the cancellation rate for CLE to STL? ▼
Over the last 24 months, 1.0% of flights on this route were cancelled (14 of 1,406 flights) and 0.1% were diverted.
How far is the flight from CLE to STL? ▼
The flight distance from Cleveland (CLE) to St. Louis (STL) is approximately 487 miles. This route is served by 1 carrier.
When is the best time to fly from CLE to STL? ▼
The best recent month for on-time performance was Sep 2024 (96% on-time). The worst was Dec 2024 (69% on-time). Consider booking during months with historically better performance.

Airports on this route

CLE Airport

Cleveland
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 CLE–STL data

CLE–STL runs 8.1 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare CLE and STL airport profiles: delay causes and top routes differ even on the same corridor. CLE airport
  • If your dates flex, March (92.7% on-time) beats December (79.5%) on this corridor. Seasonal chart
  • 4 other routes post a similar 87.1% 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.