Cincinnati (CVG) to Washington (IAD): On-Time Performance
Data through May 2026
The calendar drives reliability on CVG–IAD. July 2025 flights landed on schedule 97% of the time, but June 2025 dropped to 67% — a gap of 29 points. Across the full period the route averages 89% on-time against a national 78%.
- On-time
- 89%
- arrived <15 min late
- Avg delay
- 8 min
- completed flights
- Cancelled
- 1.2%
- Flights/day
- 1.5
- last 12 months
- Duration
- 1h 34m
- scheduled
- Distance
- 388 mi
Monthly on-time trend
Best time to fly from CVG to IAD
Aim for departures around 6 a.m. (92% on-time); avoid 2 p.m. departures (70%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 89% | 9 min |
| Tuesday | 90% | 7 min |
| Wednesdaybest | 93% | 5 min |
| Thursday | 91% | 9 min |
| Friday | 87% | 11 min |
| Saturday | 93% | 5 min |
| Sunday | 83% | 11 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft52%
- Airline operations16%
- National airspace system23%
- Weather9%
Frequently asked questions
- How often are flights from CVG to IAD delayed?
- 11% of CVG–IAD flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 8 minutes.
- What is the best time of day to fly from CVG to IAD?
- Departures around 6 a.m. have the best record (92% on-time), while departures around 2 p.m. have the worst (70%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from CVG to IAD?
- The scheduled CVG–IAD flight time averages 1h 34m over 388 miles. Actual arrival times vary — flights on this route land 15+ minutes late 11% of the time.
- How often are CVG to IAD flights cancelled?
- 1.2% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from CVG to IAD?
- June 2025 was the roughest month in this dataset, with only 67% of arrivals on time. The best was July 2025 at 97%. If your dates are flexible, that 29-point gap is worth planning around.
Explore related pages
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Based on 926 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.