AA 1277 then WN 748 at Denver
Chicago O'Hare → Denver → Austin
Timetable, Denver time
13:47AA 1277 from Chicago O'Hare at the gate
17:45WN 748 to Austin leaves the gate
3 h 58 apart on the timetable
The last days
AA 1277 and WN 748 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.