UA 8264 then VA 8287 at San Francisco
Houston → San Francisco → Seattle
Timetable, San Francisco time
15:49UA 8264 from Houston at the gate
21:05VA 8287 to Seattle leaves the gate
5 h 16 apart on the timetable
The last days
UA 8264 and VA 8287 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.