BY 2457 then U2 2261 at Manchester
Heraklion → Manchester → Reykjavík
Timetable, Manchester time
02:20BY 2457 from Heraklion at the gate
07:00U2 2261 to Reykjavík leaves the gate
4 h 40 apart on the timetable
The last days
BY 2457 and U2 2261 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.