BA4 Los AngelesLAX LondonLHR
BA4 by British Airways flies from Los Angeles (LAX) to London (LHR).
scheduled from LAX
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at LAX and LHR 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 Los Angeles to London flights today
same route · British AirwaysIf BA4 is cancelled, these are the other British Airways nonstop flights from Los Angeles to London on the same day, with scheduled departure times in LAX local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How BA4 actually runs
Pro Flight Search has tracked every published board update for BA4 across the LAX and LHR boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at LAX and LHR.
The verdict above is that record speaking, so it reflects how BA4 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 LAX and LHR published them.
Planning around BA4? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — BA4 Los Angeles to London on-time performance, measured from the LAX and LHR airport boards.
https://proflightsearch.com/flight/BA4
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