OnTimeRoutes
C

United Airlines IAH to CLT on-time performance

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

On-time arrivals
77%
arrived < 15 min late
Cancelled
1.1%
4 flights
Avg arrival delay
14 min
54 min when late
Rank on route
#3 of 4
route average 81% on time

Key facts

  • United Airlines flights on IAH to CLT arrived on time 77% of the time in Aug 2025 – Jul 2026.
  • 1.1% were cancelled, and 7% arrived an hour or more late.
  • That ranks #3 of 4 airlines on this route, which averaged 81% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (42%).

On-time trend by month

40%70%100%July 2025: 52.7% on time, 3.5% cancelledJul ’25August 2025: 61.3% on time, 3.1% cancelledAug ’25September 2025: 93.3% on time, 0.0% cancelledSep ’25October 2025: 74.2% on time, 0.0% cancelledOct ’25November 2025: 86.7% on time, 0.0% cancelledNov ’25December 2025: 78.1% on time, 0.0% cancelledDec ’25January 2026: 100.0% on time, 9.4% cancelledJan ’26February 2026: 85.7% on time, 0.0% cancelledFeb ’26March 2026: 67.7% on time, 0.0% cancelledMar ’26April 2026: 83.3% on time, 0.0% cancelledApr ’26May 2026: 64.5% on time, 0.0% cancelledMay ’26June 2026: 70.0% on time, 0.0% cancelledJun ’26July 2026: 57.7% 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 aircraft42%
  • Airline (crew, maintenance, cleaning, fueling)29%
  • Air traffic control & airport congestion22%
  • Extreme weather7%
  • Security0%

Other airlines on IAH to CLT

Full IAH to CLT comparison →
United Airlines on-time record across all routes →

363 United Airlines flights tracked on this route; 4 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.