Route
BWI → CMH
Baltimore/Washington International Thurgood Marshall Airport John Glenn Columbus International Airport
How punctual is this route?
- On-time arrivals
- 77.9%
- Less than 15 minutes late
- Cancelled
- 1.5%
- Of scheduled flights
- Average delay when late
- 67 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,053
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 55%
- Airline (crew, maintenance, cleaning) 29%
- Air traffic control & airport 12%
- Extreme weather 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 86.7% | 90 |
| October 2025 | 76.3% | 97 |
| November 2025 | 83.3% | 91 |
| December 2025 | 74.7% | 95 |
| January 2026 | 80.6% | 72 |
| February 2026 | 88.1% | 71 |
| March 2026 | 69.2% | 91 |
| April 2026 | 83.9% | 87 |
| May 2026 | 79.5% | 88 |
| June 2026 | 78.4% | 90 |
| July 2026 | 73.0% | 92 |
| August 2026 | 64.4% | 89 |
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 | 1,053 | 77.9% | 1.5% | 67 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN4157
37% late · 60 flights
-
WN1992
19% late · 58 flights
-
WN2393
9% late · 58 flights
-
WN4415
15% late · 58 flights
-
WN1647
16% late · 45 flights
-
WN4524
9% late · 44 flights
-
WN921
35% late · 44 flights
-
WN2182
21% late · 42 flights
-
WN3853
26% late · 42 flights
-
WN1653
38% late · 40 flights
-
WN2720
6% late · 33 flights
-
WN3029
9% late · 33 flights
-
WN4652
42% late · 33 flights
-
WN1678
3% late · 31 flights
-
WN3163
19% late · 31 flights
-
WN3540
43% late · 28 flights
-
WN843
11% late · 27 flights
-
WN2041
17% late · 24 flights
-
WN477
14% late · 21 flights
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