DL 8840 then UA 2464 at San Francisco
Vancouver → San Francisco → Reno
Timetable, San Francisco time
16:36DL 8840 from Vancouver at the gate
20:40UA 2464 to Reno leaves the gate
4 h 04 apart on the timetable
The last days
DL 8840 and UA 2464 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.