OnTimeRoutes
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United Airlines PIT to DEN on-time performance

United Airlines nonstop flights from Pittsburgh to Denver · Aug 2025 – Jul 2026

On-time arrivals
87%
arrived < 15 min late
Cancelled
0.7%
6 flights
Avg arrival delay
9 min
64 min when late
Rank on route
#1 of 3
route average 82% on time

Key facts

  • United Airlines flights on PIT to DEN arrived on time 87% of the time in Aug 2025 – Jul 2026.
  • 0.7% were cancelled, and 4% arrived an hour or more late.
  • That ranks #1 of 3 airlines on this route, which averaged 82% on time overall.
  • The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (43%).

On-time trend by month

60%80%100%July 2025: 83.1% on time, 1.1% cancelledJul ’25August 2025: 79.1% on time, 1.1% cancelledAug ’25September 2025: 91.1% on time, 0.0% cancelledSep ’25October 2025: 93.5% on time, 0.0% cancelledOct ’25November 2025: 97.7% on time, 0.0% cancelledNov ’25December 2025: 78.1% on time, 0.0% cancelledDec ’25January 2026: 88.3% on time, 3.2% cancelledJan ’26February 2026: 87.5% on time, 0.0% cancelledFeb ’26March 2026: 88.5% on time, 1.6% cancelledMar ’26April 2026: 96.7% on time, 0.0% cancelledApr ’26May 2026: 82.0% on time, 1.6% cancelledMay ’26June 2026: 71.7% on time, 0.0% cancelledJun ’26July 2026: 83.3% on time, 1.6% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Airline (crew, maintenance, cleaning, fueling)43%
  • Air traffic control & airport congestion37%
  • Late-arriving aircraft16%
  • Extreme weather3%
  • Security0%

Other airlines on PIT to DEN

851 United Airlines flights tracked on this route; 6 cancelled, 1 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.