OnTimeRoutes
B

United Airlines IAH to CMH on-time performance

United Airlines nonstop flights from Houston to Columbus · Aug 2025 – Jul 2026

On-time arrivals
77%
arrived < 15 min late
Cancelled
1.0%
5 flights
Avg arrival delay
16 min
62 min when late
Rank on route
#2 of 2
route average 77% on time

Key facts

  • United Airlines flights on IAH to CMH arrived on time 77% of the time in Aug 2025 – Jul 2026.
  • 1% were cancelled, and 8% arrived an hour or more late.
  • That ranks #2 of 2 airlines on this route, which averaged 77% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (50%).

On-time trend by month

40%70%100%July 2025: 64.2% on time, 0.0% cancelledJul ’25August 2025: 67.3% on time, 1.9% cancelledAug ’25September 2025: 87.5% on time, 0.0% cancelledSep ’25October 2025: 74.2% on time, 0.0% cancelledOct ’25November 2025: 83.1% on time, 0.0% cancelledNov ’25December 2025: 73.2% on time, 0.0% cancelledDec ’25January 2026: 93.9% on time, 2.9% cancelledJan ’26February 2026: 77.8% on time, 0.0% cancelledFeb ’26March 2026: 84.0% on time, 3.8% cancelledMar ’26April 2026: 86.7% on time, 0.0% cancelledApr ’26May 2026: 76.3% on time, 2.6% cancelledMay ’26June 2026: 56.8% on time, 0.0% cancelledJun ’26July 2026: 59.3% on time, 0.0% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft50%
  • Airline (crew, maintenance, cleaning, fueling)31%
  • Air traffic control & airport congestion17%
  • Extreme weather2%
  • Security0%

Other airlines on IAH to CMH

517 United Airlines flights tracked on this route; 5 cancelled, 0 diverted.

Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.