TK 6037 then 5X 5555 at O'Hare
Istanbul → Chicago → Louisville
Timetable, Chicago time
06:05TK 6037 from Istanbul at the gate
09:005X 5555 to Louisville leaves the gate
2 h 55 apart on the timetable
The last days
TK 6037 and 5X 5555 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.