UA 2453 then SY 8405 at Houston
Jacksonville → Houston → Atlanta
Timetable, Houston time
08:36UA 2453 from Jacksonville at the gate
18:30SY 8405 to Atlanta leaves the gate
9 h 54 apart on the timetable
Today
From the airport’s board at 01:23 Houston time
08:36UA 2453 is cancelled
18:30SY 8405 due to leave, no estimate yet
The last days
UA 2453 and SY 8405 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.