Route
STL → CMH
St. Louis Lambert International Airport John Glenn Columbus International Airport
How punctual is this route?
- On-time arrivals
- 80.2%
- Less than 15 minutes late
- Cancelled
- 0.3%
- Of scheduled flights
- Average delay when late
- 57 min
- Flights arriving 15+ minutes late
- Flights tracked
- 668
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 54%
- Airline (crew, maintenance, cleaning) 37%
- Air traffic control & airport 7%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 94.6% | 56 |
| October 2025 | 93.1% | 58 |
| November 2025 | 79.6% | 54 |
| December 2025 | 79.3% | 58 |
| January 2026 | 89.1% | 57 |
| February 2026 | 80.0% | 52 |
| March 2026 | 75.9% | 58 |
| April 2026 | 82.1% | 56 |
| May 2026 | 80.4% | 56 |
| June 2026 | 64.3% | 56 |
| July 2026 | 74.1% | 58 |
| August 2026 | 68.8% | 49 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Southwest Airlines | 668 | 80.2% | 0.3% | 57 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN3059
35% late · 57 flights
-
WN4657
27% late · 55 flights
-
WN4908
13% late · 55 flights
-
WN3902
10% late · 52 flights
-
WN4812
45% late · 51 flights
-
WN757
6% late · 50 flights
-
WN2023
13% late · 39 flights
-
WN2045
3% late · 31 flights
-
WN1152
21% late · 28 flights
-
WN2002
4% late · 27 flights
-
WN2069
7% late · 27 flights
-
WN2368
12% late · 24 flights
-
WN3940
50% late · 24 flights
-
WN2480
13% late · 23 flights
-
WN4565
9% late · 22 flights
-
WN2537
40% late · 20 flights
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