TK 6687 then BA 697 at Vienna
Istanbul → Vienna → London Heathrow
Timetable, Vienna time
07:55TK 6687 from Istanbul at the gate
16:10BA 697 to London Heathrow leaves the gate
8 h 15 apart on the timetable
The last days
TK 6687 and BA 697 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.