AS 3309 then WN 4509 at Phoenix
San Diego → Phoenix → Tucson
Timetable, Phoenix time
15:00AS 3309 from San Diego at the gate
19:30WN 4509 to Tucson leaves the gate
4 h 30 apart on the timetable
The last days
AS 3309 and WN 4509 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.