UA123 United Airlines - Flight Status
Codeshare Flights
The flight AC5424 from Air Canada (AC) is a codeshare flight operated by United Airlines (UA) under the flight number UA123. Check this page for details about flight UA123.
Warning
This flight has been diverted and landed in a different airport than scheduled. Contact airline to obtain more information. This was the original destination:
Newark (EWR) - Newark Liberty International Airport
There is more than one flight with the same flight number on the same day. This is the other flight:
UA123 London (LHR) to Newark (EWR) Departure: 10:45 Arrival: 13:20 Check flight
Below, you can find details about United Airlines flight UA123, which currently operates between the airports of London - London Heathrow Airport (Airport Code LHR) and London - London Heathrow Airport (Airport Code LHR).
This flight data pertains specifically to the flight's details for Saturday, February 21, 2026.
UA123 On Time performance:
91
We have calculated the percentage of flights that arrived within 15 minutes of their scheduled time, or earlier, based on real flight data from the last 3 months. More about punctuality and delays Flight Status
UA123 United Airlines to London
Scheduled
Flight Status for Saturday February 21, 2026
This flight was also scheduled for Yesterday (February 20, 2026). See it here
This flight is also scheduled for Tomorrow (February 22, 2026). See it here
Scheduled
Flight Status for Saturday February 21, 2026
Airline information
United Airlines
Equipment: Boeing 767-300 (winglets) Passenger
Departure
London (LHR)
February 21, 2026
London Heathrow Airport
Estimated Departure Time:
08:31
Terminal:
2
Gate:
B32
Scheduled Departure Time: 08:00
Arrival
London (LHR)
February 21, 2026
London Heathrow Airport
Scheduled Arrival Time:
11:20
Terminal:
B
Gate:
-
Scheduled Arrival Time: 11:20
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.airport-london-heathrow.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.
Codeshare Flights
This flight is shared with other airlines, this means that these other flights are the same:
- AC5424 - Air Canada
- LH7753 - Lufthansa
- OS7791 - Austrian
- SN9028 - Brussels Airlines