UA588

UA588 (United Airlines) is a multi-stop service on 3 routes, busiest Durango to Denver. Of 733 departures recorded from October 2024 to July 2026, 76.9% 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
January31310.0%
February28280.0%
March3158▲ 87.1%
April3060▲ 100.0%
May3151▲ 64.5%
June30300.0%
July31310.0%
August31––
September30––
October31–in progress
November29––
December31––
Year to date (Jan–Jul)212289▲ 36.3%

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
January71.0%77.4%▲ 9.1%
February75.0%85.7%▲ 14.3%
March87.1%75.4%▼ 13.4%
April80.0%86.7%▲ 8.3%
May74.2%86.3%▲ 16.3%
June60.0%76.7%▲ 27.8%
July56.7%71.0%▲ 25.2%
August53.3%––
September73.3%––
October83.9%–in progress
November79.3%––
December74.2%––
Year-to-date average (Jan–Jul)72.0%79.9%▲ 11.0%

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–
July10▼ 100.0%
August1––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)110.0%

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% 730
  • Cancelled 0.4% 3

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

On time, leg by leg

  1. DRO–DEN509 78.2%
  2. DEN–IAH170 79.4%
  3. DEN–JAC54 55.8%

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

Legs flown under this number

3
RoutesDistance (km)Avg delay On timeDepartures
DRO DEN Durango La Plata County Airport – Denver International Airport 403 12.6 min 78.2% 509
DEN IAH Denver International Airport – George Bush Intercontinental Airport 1,387 9.7 min 79.4% 170
DEN JAC Denver International Airport – Jackson Hole Airport 653 46.8 min 55.8% 54
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 20 100.0% 0
November 2024 29 29 75.9% 0
December 2024 31 31 80.7% 0
January 2025 31 31 71.0% 0
February 2025 28 28 75.0% 0
March 2025 31 31 87.1% 0
April 2025 30 30 80.0% 0
May 2025 31 31 74.2% 0
June 2025 30 30 60.0% 0
July 2025 31 30 56.7% 1
August 2025 31 30 53.3% 1
September 2025 30 30 73.3% 0
October 2025 31 31 83.9% 0
November 2025 29 29 79.3% 0
December 2025 31 31 74.2% 0
January 2026 31 31 77.4% 0
February 2026 28 28 85.7% 0
March 2026 58 57 75.4% 1
April 2026 60 60 86.7% 0
May 2026 51 51 86.3% 0
June 2026 30 30 76.7% 0
July 2026 31 31 71.0% 0

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