AA 2279 then K4 810 at O'Hare
San Juan → Chicago → Anchorage
Timetable, Chicago time
19:30AA 2279 from San Juan at the gate
04:00K4 810 to Anchorage leaves the gate
8 h 30 apart on the timetable, overnight
The last days
AA 2279 and K4 810 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.