Route
CMH → IAH
John Glenn Columbus International Airport George Bush Intercontinental Airport
986 miles
Return route IAH → CMH →
How punctual is this route?
- On-time arrivals
- 80.2%
- Less than 15 minutes late
- Cancelled
- 1.1%
- Of scheduled flights
- Average delay when late
- 90 min
- Flights arriving 15+ minutes late
- Flights tracked
- 528
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 36%
- Late-arriving aircraft 31%
- Air traffic control & airport 30%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 76.8% | 56 |
| October 2025 | 79.0% | 62 |
| November 2025 | 69.5% | 59 |
| December 2025 | 61.9% | 42 |
| January 2026 | 91.7% | 37 |
| February 2026 | 96.3% | 28 |
| March 2026 | 82.0% | 52 |
| April 2026 | 93.3% | 30 |
| May 2026 | 73.7% | 39 |
| June 2026 | 75.0% | 37 |
| July 2026 | 88.9% | 27 |
| August 2026 | 89.5% | 59 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| United Airlines | 523 | 80.0% | 1.1% | 90 min |
| SkyWest Airlines | 5 | 100.0% | 0.0% | — |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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