WS 5449 then WN 4513 at San Francisco
Detroit → San Francisco → San Diego
Timetable, San Francisco time
18:21WS 5449 from Detroit at the gate
19:20WN 4513 to San Diego leaves the gate
59 min apart on the timetable
The last days
WS 5449 and WN 4513 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.