UA584

UA584 (United Airlines) is a multi-stop service on 10 routes, busiest Orlando to Houston. Of 787 departures recorded from October 2024 to July 2026, 89.5% 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%
February2844▲ 57.1%
March3162▲ 100.0%
April3059▲ 96.7%
May4131▼ 24.4%
June5928▼ 52.5%
July2724▼ 11.1%
August31––
September30––
October31–in progress
November30––
December45––
Year to date (Jan–Jul)247279▲ 13.0%

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
January90.0%79.3%▼ 11.9%
February85.7%86.4%▲ 0.8%
March96.8%91.7%▼ 5.3%
April90.0%91.5%▲ 1.7%
May92.7%96.7%▲ 4.3%
June79.3%85.7%▲ 8.1%
July92.6%95.8%▲ 3.5%
August93.3%––
September100.0%––
October93.6%–in progress
November90.0%––
December71.1%––
Year-to-date average (Jan–Jul)89.6%89.6%0.0%

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
January12▲ 100.0%
February00–
March02–
April00–
May01–
June10▼ 100.0%
July00–
August1––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)25▲ 150.0%

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 98.9% 778
  • Cancelled 1.1% 9

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

On time, leg by leg

  1. MCO–IAH381 92.1%
  2. IAH–DFW168 81.1%
  3. PHL–IAH109 95.4%
  4. IAH–SEA35 80.0%
  5. MSP–IAH31 93.3%

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

Legs flown under this number

5
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 33 33 97.0% 0
November 2024 30 30 96.7% 0
December 2024 31 30 86.7% 1
January 2025 31 30 90.0% 1
February 2025 28 28 85.7% 0
March 2025 31 31 96.8% 0
April 2025 30 30 90.0% 0
May 2025 41 41 92.7% 0
June 2025 59 58 79.3% 1
July 2025 27 27 92.6% 0
August 2025 31 30 93.3% 1
September 2025 30 30 100.0% 0
October 2025 31 31 93.6% 0
November 2025 30 30 90.0% 0
December 2025 45 45 71.1% 0
January 2026 31 29 79.3% 2
February 2026 44 44 86.4% 0
March 2026 62 60 91.7% 2
April 2026 59 59 91.5% 0
May 2026 31 30 96.7% 1
June 2026 28 28 85.7% 0
July 2026 24 24 95.8% 0

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