OnTimeRoutes
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United Airlines LGA to IAH on-time performance

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

On-time arrivals
77%
arrived < 15 min late
Cancelled
1.8%
43 flights
Avg arrival delay
19 min
81 min when late
Rank on route
#3 of 4
route average 77% on time

Key facts

  • United Airlines flights on LGA to IAH arrived on time 77% of the time in Aug 2025 – Jul 2026.
  • 1.8% were cancelled, and 9% arrived an hour or more late.
  • That ranks #3 of 4 airlines on this route, which averaged 77% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (40%).

On-time trend by month

50%75%100%July 2025: 66.4% on time, 3.4% cancelledJul ’25August 2025: 76.1% on time, 0.9% cancelledAug ’25September 2025: 88.9% on time, 0.0% cancelledSep ’25October 2025: 71.9% on time, 1.7% cancelledOct ’25November 2025: 76.6% on time, 0.9% cancelledNov ’25December 2025: 76.2% on time, 1.4% cancelledDec ’25January 2026: 92.6% on time, 3.2% cancelledJan ’26February 2026: 84.5% on time, 5.8% cancelledFeb ’26March 2026: 81.0% on time, 4.7% cancelledMar ’26April 2026: 83.0% on time, 0.4% cancelledApr ’26May 2026: 70.1% on time, 1.8% cancelledMay ’26June 2026: 70.6% on time, 0.9% cancelledJun ’26July 2026: 69.7% on time, 3.9% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft40%
  • Air traffic control & airport congestion25%
  • Airline (crew, maintenance, cleaning, fueling)23%
  • Extreme weather13%
  • Security0%

Other airlines on LGA to IAH

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

2,381 United Airlines flights tracked on this route; 43 cancelled, 6 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.