UA1074

UA1074 (United Airlines) is a multi-stop service on 16 routes, busiest Boston to San Francisco. Of 841 departures recorded from October 2024 to July 2026, 80.5% 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
January3158▲ 87.1%
February2839▲ 39.3%
March2331▲ 34.8%
April1731▲ 82.4%
May3248▲ 50.0%
June5930▼ 49.2%
July5221▼ 59.6%
August47––
September46––
October56–in progress
November25––
December58––
Year to date (Jan–Jul)242258▲ 6.6%

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
January80.0%80.7%▲ 0.9%
February82.1%83.8%▲ 2.0%
March82.6%90.3%▲ 9.3%
April88.2%90.3%▲ 2.4%
May87.5%83.3%▼ 4.8%
June86.4%70.0%▼ 19.0%
July76.9%42.9%▼ 44.3%
August80.4%––
September86.7%––
October76.8%–in progress
November84.0%––
December86.2%––
Year-to-date average (Jan–Jul)83.4%77.3%▼ 7.3%

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
January110.0%
February02–
March00–
April00–
May00–
June00–
July00–
August1––
September1––
October0–in progress
November0––
December0––
Year to date (Jan–Jul)13▲ 200.0%

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 99.2% 834
  • Cancelled 0.8% 7

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

On time, leg by leg

  1. BOS–SFO329 76.5%
  2. SFO–SAN141 77.7%
  3. EWR–BOS53 96.1%
  4. SFO–ONT51 86.3%
  5. SFO–PHX37 97.3%
  6. IAD–IAH37 80.6%
  7. SFO–BWI35 85.7%
  8. IAD–AUS32 84.4%

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

Legs flown under this number

9
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 25 25 96.0% 0
November 2024 53 52 65.4% 1
December 2024 31 31 64.5% 0
January 2025 31 30 80.0% 1
February 2025 28 28 82.1% 0
March 2025 23 23 82.6% 0
April 2025 17 17 88.2% 0
May 2025 32 32 87.5% 0
June 2025 59 59 86.4% 0
July 2025 52 52 76.9% 0
August 2025 47 46 80.4% 1
September 2025 46 45 86.7% 1
October 2025 56 56 76.8% 0
November 2025 25 25 84.0% 0
December 2025 58 58 86.2% 0
January 2026 58 57 80.7% 1
February 2026 39 37 83.8% 2
March 2026 31 31 90.3% 0
April 2026 31 31 90.3% 0
May 2026 48 48 83.3% 0
June 2026 30 30 70.0% 0
July 2026 21 21 42.9% 0

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