UA734

UA734 (United Airlines) is a multi-stop service on 2 routes, busiest Chicago to San Diego. Of 83 departures recorded from October 2024 to October 2025, 72.3% left on time, according to the US BTS.

Recorded departures by month

All legs under this number combined; see the leg table.

Months without data are left blank.

The most recent periods4 periods
PeriodDepartures 2024Departures 2025Change vs last year
January–––
February–––
March–––
April–––
May–––
June–––
July–––
August–13–
September–30–
October1525▲ 66.7%
November–––
December–––

according to the US BTS · October 2024 → October 2025

On-time departures by month

All legs combined

Months without data are left blank.

On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.

The most recent periods4 periods
PeriodOn time 2024On time 2025Change vs last year
January–––
February–––
March–––
April–––
May–––
June–––
July–––
August–84.6%–
September–73.3%–
October73.3%64.0%▼ 12.7%
November–––
December–––

according to the US BTS · October 2024 → October 2025

Average departure delay by month

All legs combined

Months without data are left blank.

according to the US BTS · October 2024 → October 2025

Cancelled departures by month

All legs combined

Months without data are left blank.

The most recent periods4 periods
PeriodCancelled 2024Cancelled 2025Change vs last year
January–––
February–––
March–––
April–––
May–––
June–––
July–––
August–0–
September–0–
October00–
November–––
December–––

according to the US BTS · October 2024 → October 2025

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 100.0% 83
  • Cancelled 0.0% 0

Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Oct 25, 2025

Legs flown under this number

1
RoutesDistance (km)Avg delay On timeDepartures
ORD SAN Chicago O'Hare International Airport – San Diego International Airport 2,768 25.5 min 72.1% 68
Monthly figures
PeriodDepartures With departure delay recordedOn time Cancelled
October 2024 15 15 73.3% 0
August 2025 13 13 84.6% 0
September 2025 30 30 73.3% 0
October 2025 25 25 64.0% 0

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