AA 149 then UA 3906 at San Francisco
New York JFK → San Francisco → Chicago O'Hare
Timetable, San Francisco time
14:37AA 149 from New York JFK at the gatealso QF 4468, AT 5006, G3 6358, QR 7866
19:30UA 3906 to Chicago O'Hare leaves the gate
4 h 53 apart on the timetable
Today
From the airport’s board at 08:03 San Francisco time
14:11AA 149 expected at the gate26 min early
19:30UA 3906 due to leave, no estimate yet
5 h 19 between the gates, on these times
The last days
AA 149 and UA 3906 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.