W9 5379 then FR 4587 at Barcelona
London Luton → Barcelona → Porto
Timetable, Barcelona time
11:55W9 5379 from London Luton at the gate
15:35FR 4587 to Porto leaves the gate
3 h 40 apart on the timetable
The last days
W9 5379 and FR 4587 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.