F9 3971 then WN 42 at Phoenix
Dallas-Fort Worth → Phoenix → San Diego
Timetable, Phoenix time
11:31F9 3971 from Dallas-Fort Worth at the gate
15:15WN 42 to San Diego leaves the gate
3 h 44 apart on the timetable
The last days
F9 3971 and WN 42 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.