IAH to CMH flight delays & on-time performance
Nonstop flights from George Bush Intercontinental Airport to John Glenn Columbus International Airport · 986 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at IAH or CMH right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Houston (IAH) to Columbus (CMH) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1% were cancelled, and 8% arrived an hour or more late.
- Departures scheduled around 12pm did best (84% on time); around 8pm did worst (56%).
- Saturday was the most reliable day to fly (85% on time) and Friday the least (71%).
- The largest source of delay minutes was late-arriving aircraft (50%).
Which airline is most on time from IAH to CMH?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 100% | 0.0% | 1 min | 0.0% | 5 |
| United Airlines | 77% | 1.0% | 16 min | 8.0% | 517 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 12pm84%171 flights
- 6pm80%253 flights
- 7pm76%17 flights
- 8pm56%78 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday81%2.5% cancelled
- Tuesday82%0.0% cancelled
- Wednesday73%1.3% cancelled
- Thursday79%0.0% cancelled
- Friday71%0.0% cancelled
- Saturday85%3.2% cancelled
- Sunday73%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft50%
- Airline (crew, maintenance, cleaning, fueling)31%
- Air traffic control & airport congestion17%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather60%
- Airline (crew, maintenance, cleaning, fueling)40%
- Air traffic control & airport congestion0%
- Security0%
IAH to CMH: common questions
- How often are IAH to CMH flights on time?
- 77% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Houston to Columbus cancelled?
- 1.0% of scheduled flights were cancelled (5 of 522).
- How long are typical delays?
- Across all flights the average arrival delay was 15 min (early arrivals count as zero). Flights that were late arrived 62 min behind schedule on average, and 7.9% of flights were an hour or more late.
- How long is taxi time at IAH?
- Flights on this route spent 23 min taxiing from the gate to takeoff on average.
Related routes
Return trip: CMH to IAH — 78% on time
More flights from Houston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: IAH → CMH, nonstop flights by US airlines that report to the DOT. How we calculate this.