TP 9017 then U2 7645 at Lisbon
London Heathrow → Lisbon → Madrid
Timetable, Lisbon time
13:45TP 9017 from London Heathrow at the gate
18:20U2 7645 to Madrid leaves the gate
4 h 35 apart on the timetable
The last days
TP 9017 and U2 7645 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.