TK 6015 then UA 2220 at O'Hare
Istanbul → Chicago → Boston
Timetable, Chicago time
01:30TK 6015 from Istanbul at the gate
12:30UA 2220 to Boston leaves the gate
11 h apart on the timetable
The last days
TK 6015 and UA 2220 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.