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Flight Reliability

UA 1501 · United Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and UA 1501 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

80%
Arrive within 15 minutes
4 min
Average arrival delay
0.7%
Cancelled
9 min early
Median arrival delay

Based on 448 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon83%(63 flights)
  • Tue85%(58 flights)
  • Wed81%(63 flights)
  • Thu83%(63 flights)
  • Fri79%(65 flights)
  • Sat79%(65 flights)
  • Sun70%(66 flights)
On-time by departure window
  • 3–6 AM98%(42 flights)
  • 6–9 AM91%(11 flights)
  • 12–3 PM77%(325 flights)
  • 3–6 PM77%(65 flights)
On-time trend by month
73%
May

Jun 87% → May 73% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%55
July 202577%31
August 202581%47
September 202587%30
October 202571%31
November 202586%28
December 202581%31
January 202667%30
February 202682%28
March 202681%31
April 202684%31
May 202673%70
Departures on time
81%
Diverted
0.4%
Flights flown
443
Months covered
12

Keep nerding

Based on 448 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.