Cincinnati (CVG) to Washington (IAD): On-Time Performance
Data through July 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
- 9 min
- completed flights
- Cancelled
- 1.6%
- Flights/day
- 1.6
- 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. (93% on-time); avoid 2 p.m. departures (71%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 87% | 12 min |
| Tuesday | 90% | 6 min |
| Wednesdaybest | 94% | 5 min |
| Thursday | 91% | 9 min |
| Friday | 85% | 12 min |
| Saturday | 91% | 7 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 aircraft48%
- Airline operations24%
- National airspace system20%
- 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 2024-07 and 2026-07. The average arrival delay across completed flights was 9 minutes.
- What is the best time of day to fly from CVG to IAD?
- Departures around 6 a.m. have the best record (93% on-time), while departures around 2 p.m. have the worst (71%). 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?
- 1.6% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, 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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Related guides
Based on 1,011 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.