Route
CMH → BWI
John Glenn Columbus International Airport Baltimore/Washington International Thurgood Marshall Airport
How punctual is this route?
- On-time arrivals
- 87.2%
- Less than 15 minutes late
- Cancelled
- 1.5%
- Of scheduled flights
- Average delay when late
- 77 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,044
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 53%
- Airline (crew, maintenance, cleaning) 26%
- Air traffic control & airport 20%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 88.9% | 90 |
| October 2025 | 94.9% | 98 |
| November 2025 | 86.7% | 90 |
| December 2025 | 80.6% | 94 |
| January 2026 | 90.9% | 71 |
| February 2026 | 86.6% | 71 |
| March 2026 | 85.6% | 91 |
| April 2026 | 91.9% | 87 |
| May 2026 | 86.4% | 89 |
| June 2026 | 82.6% | 86 |
| July 2026 | 85.5% | 89 |
| August 2026 | 86.2% | 88 |
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 | 1,044 | 87.2% | 1.5% | 77 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN4376
3% late · 61 flights
-
WN1749
7% late · 60 flights
-
WN1106
4% late · 58 flights
-
WN1604
12% late · 58 flights
-
WN2031
0% late · 58 flights
-
WN3423
29% late · 58 flights
-
WN4418
15% late · 55 flights
-
WN1034
45% late · 43 flights
-
WN2162
2% late · 42 flights
-
WN4026
39% late · 33 flights
-
WN523
0% late · 33 flights
-
WN1160
6% late · 31 flights
-
WN1284
19% late · 31 flights
-
WN909
6% late · 31 flights
-
WN1177
4% late · 27 flights
-
WN611
4% late · 24 flights
-
WN1547
4% late · 23 flights
-
WN1560
10% late · 21 flights
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