U2 2517 then U2 3304 at Schiphol
London Luton → Amsterdam → Edinburgh
Timetable, Amsterdam time
16:10U2 2517 from London Luton at the gate
20:05U2 3304 to Edinburgh leaves the gate
3 h 55 apart on the timetable
The last days
U2 2517 and U2 3304 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.