F9 3971 then WN 528 at Phoenix
Dallas-Fort Worth → Phoenix → Houston Hobby
Timetable, Phoenix time
10:50F9 3971 from Dallas-Fort Worth at the gate
11:20WN 528 to Houston Hobby leaves the gate
30 min apart on the timetable
The last days
F9 3971 and WN 528 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.