Route
CMH → IAD
John Glenn Columbus International Airport Washington Dulles International Airport
How punctual is this route?
- On-time arrivals
- 84.9%
- Less than 15 minutes late
- Cancelled
- 0.9%
- Of scheduled flights
- Average delay when late
- 86 min
- Flights arriving 15+ minutes late
- Flights tracked
- 935
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 44%
- Airline (crew, maintenance, cleaning) 37%
- Air traffic control & airport 16%
- Extreme weather 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 91.2% | 136 |
| October 2025 | 83.5% | 97 |
| November 2025 | 83.3% | 60 |
| December 2025 | 75.0% | 76 |
| January 2026 | 90.7% | 79 |
| February 2026 | 84.3% | 104 |
| March 2026 | 81.7% | 116 |
| April 2026 | 95.3% | 85 |
| May 2026 | 80.9% | 69 |
| June 2026 | 86.7% | 45 |
| July 2026 | 100.0% | 3 |
| August 2026 | 75.4% | 65 |
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 |
|---|---|---|---|---|
| Republic Airways | 527 | 89.7% | 0.9% | 70 min |
| United Airlines | 408 | 78.8% | 0.7% | 95 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
YX3430
5% late · 280 flights
-
YX3546
17% late · 78 flights
-
UA310
15% late · 53 flights
-
UA445
10% late · 52 flights
-
UA1695
29% late · 41 flights
-
YX3428
32% late · 38 flights
-
YX3662
13% late · 31 flights
-
UA529
18% late · 28 flights
-
UA1689
17% late · 24 flights
-
UA312
4% late · 24 flights
-
UA1066
13% late · 23 flights
-
UA283
9% late · 23 flights
-
YX3495
9% late · 23 flights
-
YX3506
0% late · 22 flights
-
UA1144
25% late · 21 flights
-
UA1273
52% late · 21 flights
-
UA1338
19% late · 21 flights
-
YX3541
19% late · 21 flights
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