UA2237

UA2237 (United Airlines) is a multi-stop service on 13 routes, busiest San Diego to Houston. Of 991 departures recorded from October 2024 to July 2026, 79.3% 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
January3331▼ 6.1%
February2628▲ 7.7%
March3152▲ 67.7%
April3052▲ 73.3%
May3132▲ 3.2%
June3930▼ 23.1%
July58580.0%
August46––
September54––
October87–in progress
November59––
December48––
Year to date (Jan–Jul)248283▲ 14.1%

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
January78.1%83.9%▲ 7.3%
February72.0%92.9%▲ 29.0%
March74.2%76.5%▲ 3.1%
April90.0%82.7%▼ 8.1%
May71.0%84.4%▲ 18.9%
June65.8%56.7%▼ 13.9%
July69.0%69.0%0.0%
August69.6%––
September90.7%––
October88.5%–in progress
November78.0%––
December81.3%––
Year-to-date average (Jan–Jul)74.3%78.0%▲ 5.0%

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
January10▼ 100.0%
February10▼ 100.0%
March01–
April00–
May00–
June10▼ 100.0%
July00–
August0––
September0––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)31▼ 66.7%

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 99.5% 986
  • Cancelled 0.5% 5

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

On time, leg by leg

  1. SAN–IAH393 81.3%
  2. IAH–IAD235 72.7%
  3. IAH–BOS125 77.2%
  4. SFO–LAX37 94.6%
  5. LAX–IAH37 91.9%
  6. IAH–FLL36 83.3%
  7. SFO–SAN31 90.3%

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

Legs flown under this number

7
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 30 30 90.0% 0
November 2024 89 89 89.9% 0
December 2024 47 46 73.9% 1
January 2025 33 32 78.1% 1
February 2025 26 25 72.0% 1
March 2025 31 31 74.2% 0
April 2025 30 30 90.0% 0
May 2025 31 31 71.0% 0
June 2025 39 38 65.8% 1
July 2025 58 58 69.0% 0
August 2025 46 46 69.6% 0
September 2025 54 54 90.7% 0
October 2025 87 87 88.5% 0
November 2025 59 59 78.0% 0
December 2025 48 48 81.3% 0
January 2026 31 31 83.9% 0
February 2026 28 28 92.9% 0
March 2026 52 51 76.5% 1
April 2026 52 52 82.7% 0
May 2026 32 32 84.4% 0
June 2026 30 30 56.7% 0
July 2026 58 58 69.0% 0

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