UA123 LondonLHR · 07:45 New YorkEWR · 10:30
UA123 by United Airlines flies from London (LHR) to New York (EWR) for the Tue, Sep 15 departure.
estimated arrival at EWR · local time · ~3h 52m from now
board checked 2m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 08:01 · typical taxi-out at LHR ≈ 11 min. No receiver coverage over open ocean.
Where the minutes go
last 7 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival −8 min · 1 cancelled · 15 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at LHR and EWR are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other London to New York flights today
same route · United AirlinesIf UA123 is cancelled, these are the other United Airlines nonstop flights from London to New York on the same day, with scheduled departure times in LHR local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA123 actually runs
Pro Flight Search has tracked every published board update for UA123 across the LHR and EWR boards: schedule changes, gate pushes and actual clocks. Usually lands ~7 min early. Based on 12 confirmed landings · 11/12 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how UA123 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as LHR and EWR published them.
Planning around UA123? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA123 London to New York on-time performance, measured from the LHR and EWR airport boards.
https://proflightsearch.com/flight/UA123
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