AF 2251 then TP 4392 at San Francisco
Seattle → San Francisco → Boston
Timetable, San Francisco time
20:18AF 2251 from Seattle at the gatealso WS 8631
22:10TP 4392 to Boston leaves the gate
1 h 52 apart on the timetable
The last days
AF 2251 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 166523:203 h 02 after AF 2251 on the timetable