SQ 28 then WS 122 at Vancouver
Singapore → Vancouver → Calgary
Timetable, Vancouver time
08:40SQ 28 from Singapore at the gate
18:00WS 122 to Calgary leaves the gate
9 h 20 apart on the timetable
The last days
SQ 28 and WS 122 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.