UA404

UA404 (United Airlines) is a multi-stop service on 10 routes, busiest Houston to Newark. Of 981 departures recorded from October 2024 to July 2026, 72.7% 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
January6136▼ 41.0%
February4445▲ 2.3%
March5562▲ 12.7%
April3160▲ 93.5%
May3162▲ 100.0%
June3060▲ 100.0%
July3162▲ 100.0%
August44––
September54––
October31–in progress
November30––
December45––
Year to date (Jan–Jul)283387▲ 36.7%

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
January84.8%94.3%▲ 11.3%
February79.6%79.1%▼ 0.6%
March74.6%78.7%▲ 5.6%
April93.6%75.0%▼ 19.8%
May45.2%82.0%▲ 81.5%
June50.0%71.7%▲ 43.3%
July51.7%58.3%▲ 12.8%
August58.1%––
September83.3%––
October58.1%–in progress
November69.0%––
December67.4%––
Year-to-date average (Jan–Jul)68.5%77.0%▲ 12.5%

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
January21▼ 50.0%
February02–
March01–
April00–
May01–
June00–
July220.0%
August1––
September0––
October0–in progress
November1––
December2––
Year to date (Jan–Jul)47▲ 75.0%

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 98.5% 966
  • Cancelled 1.5% 15

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

On time, leg by leg

  1. IAH–EWR592 65.2%
  2. SAT–IAH170 82.9%
  3. PSP–IAH60 86.7%
  4. SFO–IAH37 89.2%
  5. SFO–PSP36 88.9%
  6. LGA–IAH35 60.0%

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

Legs flown under this number

6
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 20 20 90.0% 0
November 2024 30 30 66.7% 0
December 2024 57 57 70.2% 0
January 2025 61 59 84.8% 2
February 2025 44 44 79.6% 0
March 2025 55 55 74.6% 0
April 2025 31 31 93.6% 0
May 2025 31 31 45.2% 0
June 2025 30 30 50.0% 0
July 2025 31 29 51.7% 2
August 2025 44 43 58.1% 1
September 2025 54 54 83.3% 0
October 2025 31 31 58.1% 0
November 2025 30 29 69.0% 1
December 2025 45 43 67.4% 2
January 2026 36 35 94.3% 1
February 2026 45 43 79.1% 2
March 2026 62 61 78.7% 1
April 2026 60 60 75.0% 0
May 2026 62 61 82.0% 1
June 2026 60 60 71.7% 0
July 2026 62 60 58.3% 2

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