Columbus (CMH) to Houston (IAH): On-Time Performance
Data through July 2026
Columbus (CMH) to Houston (IAH) effectively runs on two schedules. In March 2025, 94% of arrivals were on time; in July 2024 that fell to 55% — a 39-point seasonal swing. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 65%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 1.6%
- Flights/day
- 1.4
- last 12 months
- Duration
- 2h 58m
- scheduled
- Distance
- 986 mi
Monthly on-time trend
Best time to fly from CMH to IAH
Aim for departures around 7 a.m. (94% on-time); avoid 4 p.m. departures (62%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 73% | 22 min |
| Tuesdaybest | 83% | 12 min |
| Wednesday | 80% | 15 min |
| Thursday | 78% | 16 min |
| Friday | 71% | 24 min |
| Saturday | 81% | 16 min |
| Sunday | 72% | 30 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft34%
- Airline operations35%
- National airspace system28%
- Weather3%
Frequently asked questions
- How often are flights from CMH to IAH delayed?
- 23% of CMH–IAH 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 19 minutes.
- What is the best time of day to fly from CMH to IAH?
- Departures around 7 a.m. have the best record (94% on-time), while departures around 4 p.m. have the worst (62%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from CMH to IAH?
- The scheduled CMH–IAH flight time averages 2h 58m over 986 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are CMH to IAH 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 CMH to IAH?
- July 2024 was the roughest month in this dataset, with only 55% of arrivals on time. The best was March 2025 at 94%. If your dates are flexible, that 39-point gap is worth planning around.
Explore related pages
More routes from CMH
Other ways to fly to Houston (IAH)
Related guides
Based on 1,159 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.