Route
IAD → CVG
Washington Dulles International Airport Cincinnati Northern Kentucky International Airport
388 miles
Return route CVG → IAD →
How punctual is this route?
- On-time arrivals
- 80.3%
- Less than 15 minutes late
- Cancelled
- 2.3%
- Of scheduled flights
- Average delay when late
- 92 min
- Flights arriving 15+ minutes late
- Flights tracked
- 516
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 43%
- Late-arriving aircraft 32%
- Air traffic control & airport 18%
- Extreme weather 7%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 94.0% | 50 |
| October 2025 | 79.7% | 59 |
| November 2025 | 80.5% | 85 |
| December 2025 | 68.4% | 57 |
| February 2026 | 95.2% | 21 |
| March 2026 | 78.3% | 47 |
| April 2026 | 92.2% | 51 |
| May 2026 | 77.1% | 36 |
| June 2026 | 66.7% | 33 |
| July 2026 | 78.1% | 40 |
| August 2026 | 75.7% | 37 |
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 | 476 | 80.0% | 2.5% | 93 min |
| United Airlines | 40 | 84.6% | 0.0% | 81 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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