UA 3775 then 3S 441 at O'Hare
Boston → Chicago → Frankfurt am Main
Timetable, Chicago time
14:30UA 3775 from Boston at the gate
21:253S 441 to Frankfurt am Main leaves the gate
6 h 55 apart on the timetable
The last days
UA 3775 and 3S 441 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.