WS 5449 then TP 4392 at San Francisco
Detroit → San Francisco → Boston
Timetable, San Francisco time
18:21WS 5449 from Detroit at the gate
22:10TP 4392 to Boston leaves the gate
3 h 49 apart on the timetable
The last days
WS 5449 and TP 4392 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.
Later flights to Boston
UA 166523:204 h 59 after WS 5449 on the timetable