WN 4258 then UA 8285 at San Francisco
San Diego → San Francisco → Boston
Timetable, San Francisco time
17:00WN 4258 from San Diego at the gate
22:00UA 8285 to Boston leaves the gate
5 h apart on the timetable
The last days
WN 4258 and UA 8285 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.