AA 613 then UA 4419 at O'Hare
Washington National → Chicago → St Louis
Timetable, Chicago time
09:16AA 613 from Washington National at the gate
12:55UA 4419 to St Louis leaves the gate
3 h 39 apart on the timetable
The last days
AA 613 and UA 4419 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.