WS1555 SeattleSEA · 19:35 CalgaryYYC · 22:15
WS1555 by WestJet flies from Seattle (SEA) to Calgary (YYC) for the Fri, Sep 18 departure.
departs SEA · on schedule
board checked 39m ago · checking again in 45s
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SEA and YYC are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Seattle to Calgary flights today
same route · WestJetIf WS1555 is cancelled, this is the other WestJet nonstop flight from Seattle to Calgary on the same day, with scheduled departure times in SEA local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WS1555 actually runs
Pro Flight Search has tracked every published board update for WS1555 across the SEA and YYC boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: landed -9 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how WS1555 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: CGFVX.
Board clocks recorded as SEA and YYC published them.
Planning around WS1555? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — WS1555 Seattle to Calgary on-time performance, measured from the SEA and YYC airport boards.
https://proflightsearch.com/flight/WS1555
.