Route
CMH → STL
John Glenn Columbus International Airport St. Louis Lambert International Airport
How punctual is this route?
- On-time arrivals
- 83.3%
- Less than 15 minutes late
- Cancelled
- 0.6%
- Of scheduled flights
- Average delay when late
- 70 min
- Flights arriving 15+ minutes late
- Flights tracked
- 674
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 57%
- Airline (crew, maintenance, cleaning) 35%
- 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 | 94.5% | 56 |
| October 2025 | 89.5% | 57 |
| November 2025 | 85.2% | 54 |
| December 2025 | 80.7% | 57 |
| January 2026 | 88.9% | 57 |
| February 2026 | 80.8% | 52 |
| March 2026 | 74.1% | 58 |
| April 2026 | 83.9% | 56 |
| May 2026 | 82.1% | 56 |
| June 2026 | 87.5% | 56 |
| July 2026 | 77.2% | 58 |
| August 2026 | 75.4% | 57 |
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 | 674 | 83.3% | 0.6% | 70 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN1143
9% late · 58 flights
-
WN4784
3% late · 58 flights
-
WN2054
22% late · 55 flights
-
WN1207
0% late · 52 flights
-
WN2614
37% late · 52 flights
-
WN1144
23% late · 50 flights
-
WN2163
14% late · 44 flights
-
WN1970
9% late · 33 flights
-
WN2371
6% late · 31 flights
-
WN3808
46% late · 28 flights
-
WN4203
29% late · 28 flights
-
WN4037
24% late · 25 flights
-
WN2571
38% late · 24 flights
-
WN527
5% late · 23 flights
-
WN1002
14% late · 22 flights
Reviews
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