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Flight UA501

United Airlines flight UA501

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Looking for UA501 in the air…

Denver (DEN) to Orlando (MCO)

Historically, this flight arrives 15+ minutes late 26% of the time, and when it is late the delay averages 116 minutes. It was cancelled 0.6% of the time.

On-time arrivals
73.7%
Less than 15 minutes late
Cancelled
0.6%
Of scheduled flights
Average delay when late
116 min
Flights arriving 15+ minutes late
Flights tracked
343
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 52%
  • Airline (crew, maintenance, cleaning) 35%
  • Air traffic control & airport 12%
  • Extreme weather 1%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Las Vegas (LAS) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 9% of the time, and when it is late the delay averages 86 minutes. It was cancelled 0.0% of the time.

On-time arrivals
91.3%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
86 min
Flights arriving 15+ minutes late
Flights tracked
138
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 60%
  • Airline (crew, maintenance, cleaning) 22%
  • Late-arriving aircraft 18%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Chicago (ORD) to Las Vegas (LAS)

Historically, this flight arrives 15+ minutes late 5% of the time, and when it is late the delay averages 140 minutes. It was cancelled 0.0% of the time.

On-time arrivals
95.2%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
140 min
Flights arriving 15+ minutes late
Flights tracked
21
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 51%
  • Late-arriving aircraft 35%
  • Air traffic control & airport 14%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Louisville (SDF) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 0% of the time. It was cancelled 0.0% of the time.

On-time arrivals
100.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
—
Flights arriving 15+ minutes late
Flights tracked
21
Scheduled flights in the period

McAllen (MFE) to Houston (IAH)

Only 3 flights on record, which is too few for reliable odds.

On-time arrivals
100.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
—
Flights arriving 15+ minutes late
Flights tracked
3
Scheduled flights in the period

In the news

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On-time arrivals by month
Sep 2025 Aug 2026
Show as table
MonthOn timeFlights
September 2025 66.7% 30
October 2025 73.0% 37
November 2025 88.1% 59
December 2025 84.9% 54
January 2026 89.7% 58
February 2026 78.4% 38
March 2026 78.4% 76
April 2026 96.8% 31
May 2026 92.2% 51
June 2026 63.3% 30
July 2026 70.0% 31
August 2026 60.0% 31

Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data

Latest airport & airline headlines

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Headlines found by Google News; stories open on the publisher's site.