UA501

UA501 (United Airlines) is a multi-stop service on 9 routes, busiest Denver to Orlando. Of 895 departures recorded from October 2024 to July 2026, 82.2% left on time, according to the US BTS.

Recorded departures by month

All legs under this number combined; see the leg table.

The most recent periods19 periods
PeriodDepartures 2025Departures 2026Change vs last year
January3158▲ 87.1%
February2838▲ 35.7%
March5976▲ 28.8%
April6031▼ 48.3%
May4951▲ 4.1%
June30300.0%
July31310.0%
August31––
September30––
October37–in progress
November59––
December54––
Year to date (Jan–Jul)288315▲ 9.4%

according to the US BTS · October 2024 → July 2026

On-time departures by month

All legs combined

On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.

The most recent periods19 periods
PeriodOn time 2025On time 2026Change vs last year
January58.1%86.2%▲ 48.5%
February85.7%79.0%▼ 7.9%
March89.8%81.3%▼ 9.5%
April85.0%96.8%▲ 13.8%
May95.9%90.2%▼ 6.0%
June70.0%66.7%▼ 4.8%
July61.3%80.0%▲ 30.5%
August76.7%––
September76.7%––
October75.7%–in progress
November86.4%––
December88.9%––
Year-to-date average (Jan–Jul)78.0%82.9%▲ 6.3%

according to the US BTS · October 2024 → July 2026

Average departure delay by month

All legs combined

according to the US BTS · October 2024 → July 2026

Cancelled departures by month

All legs combined
The most recent periods19 periods
PeriodCancelled 2025Cancelled 2026Change vs last year
January00–
February00–
March01–
April00–
May00–
June00–
July01–
August1––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)02

according to the US BTS · October 2024 → July 2026

This is not a forecast

This is a historical record of departures already flown, not a forecast for your flight.

This number flies several legs

Several legs: the headline figure averages all of them. See the leg table.

Cancellation share

  • Not cancelled 99.6% 891
  • Cancelled 0.4% 4

Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026

On time, leg by leg

  1. DEN–MCO593 75.6%
  2. LAS–DEN138 92.8%
  3. SFO–DEN98 99.0%

Departures within 15 minutes of schedule; small figure = departures recorded.

Legs flown under this number

3
RoutesDistance (km)Avg delay On timeDepartures
DEN MCO Denver International Airport – Orlando International Airport 2,486 30.1 min 75.6% 593
LAS DEN Harry Reid International Airport – Denver International Airport 1,009 -0.5 min 92.8% 138
SFO DEN San Francisco International Airport – Denver International Airport 1,553 -2.1 min 99.0% 98
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 19 79.0% 1
November 2024 30 30 80.0% 0
December 2024 31 31 83.9% 0
January 2025 31 31 58.1% 0
February 2025 28 28 85.7% 0
March 2025 59 59 89.8% 0
April 2025 60 60 85.0% 0
May 2025 49 49 95.9% 0
June 2025 30 30 70.0% 0
July 2025 31 31 61.3% 0
August 2025 31 30 76.7% 1
September 2025 30 30 76.7% 0
October 2025 37 37 75.7% 0
November 2025 59 59 86.4% 0
December 2025 54 54 88.9% 0
January 2026 58 58 86.2% 0
February 2026 38 38 79.0% 0
March 2026 76 75 81.3% 1
April 2026 31 31 96.8% 0
May 2026 51 51 90.2% 0
June 2026 30 30 66.7% 0
July 2026 31 30 80.0% 1

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