Houston (IAH) to Columbus (CMH): On-Time Performance
Data through July 2026
When you fly IAH to CMH matters as much as anything else about the booking: the route swung from 95% on-time in January 2026 to just 56% in June 2025. Across the full period the route averages 77% on-time against a national 78%.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 1.4
- last 12 months
- Duration
- 2h 41m
- scheduled
- Distance
- 986 mi
Monthly on-time trend
Best time to fly from IAH to CMH
Aim for departures around 12 p.m. (81% on-time); avoid 8 p.m. departures (65%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 80% | 19 min |
| Tuesdaybest | 84% | 11 min |
| Wednesday | 78% | 13 min |
| Thursday | 77% | 14 min |
| Friday | 68% | 24 min |
| Saturday | 82% | 22 min |
| Sunday | 70% | 28 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 operations36%
- National airspace system12%
- Weather5%
Frequently asked questions
- How often are flights from IAH to CMH delayed?
- 23% of IAH–CMH 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 18 minutes.
- What is the best time of day to fly from IAH to CMH?
- Departures around 12 p.m. have the best record (81% on-time), while departures around 8 p.m. have the worst (65%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from IAH to CMH?
- The scheduled IAH–CMH flight time averages 2h 41m over 986 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are IAH to CMH flights cancelled?
- 1.3% 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 IAH to CMH?
- June 2025 was the roughest month in this dataset, with only 56% of arrivals on time. The best was January 2026 at 95%. If your dates are flexible, that 38-point gap is worth planning around.
Explore related pages
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Related guides
Based on 1,159 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.