Cincinnati (CVG) to Houston (IAH): On-Time Performance
Data through May 2026
Cincinnati (CVG) to Houston (IAH) effectively runs on two schedules. In November 2024, 96% of arrivals were on time; in July 2024 that fell to 77% — a 18-point seasonal swing. Across the full period the route averages 86% on-time against a national 78%. Morning departures also hold up better than evening ones (90% vs 76%), which matters most in the rough months.
- On-time
- 86%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 1.5%
- Flights/day
- 1.9
- last 12 months
- Duration
- 2h 43m
- scheduled
- Distance
- 871 mi
Best airline from CVG to IAH
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 88% | 10 min | 1.4% | 1,060 |
| Frontier Airlines | 74% | 20 min | 1.9% | 154 |
Monthly on-time trend
Best time to fly from CVG to IAH
Aim for departures around 8 a.m. (97% on-time); avoid 12 p.m. departures (76%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 84% | 13 min |
| Tuesdaybest | 91% | 7 min |
| Wednesday | 87% | 15 min |
| Thursday | 88% | 10 min |
| Friday | 84% | 12 min |
| Saturday | 85% | 12 min |
| Sunday | 84% | 7 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft21%
- Airline operations40%
- National airspace system39%
- Weather1%
Frequently asked questions
- How often are flights from CVG to IAH delayed?
- 14% of CVG–IAH 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 11 minutes.
- Which airline is most reliable from CVG to IAH?
- United Airlines has the best on-time record on this route at 88%, based on 1,060 flights. 2 airlines flew CVG–IAH frequently enough to compare in this period.
- What is the best time of day to fly from CVG to IAH?
- Departures around 8 a.m. have the best record (97% on-time), while departures around 12 p.m. have the worst (76%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from CVG to IAH?
- The scheduled CVG–IAH flight time averages 2h 43m over 871 miles. Actual arrival times vary — flights on this route land 15+ minutes late 14% of the time.
- How often are CVG to IAH flights cancelled?
- 1.5% 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 IAH?
- July 2024 was the roughest month in this dataset, with only 77% of arrivals on time. The best was November 2024 at 96%. If your dates are flexible, that 18-point gap is worth planning around.
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Based on 1,234 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.