AA 1554 then BA 9607 at Denver
Philadelphia → Denver → London
Timetable, Denver time
14:09AA 1554 from Philadelphia at the gate
18:55BA 9607 to London leaves the gate
4 h 46 apart on the timetable
The last days
AA 1554 and BA 9607 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.
Later flights to London
No later flight to London on the timetable.