Schedule: the flights that flew on Thursday, Oct 22, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
WESTJET · FLIGHT WS 1555
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 29
WS 1555 · SEA → YYC
departs 7:46 PM PT · arrives 10:28 PM MDT
Forecast issued Tue 11:00 PM ET · 48h before departure
Watch this flight
Other days
Today 15%
Thu 10/29
Fri 10/30 19%
Sat 10/31 18%
Odds over time
Arrive at YYC more than 15 minutes late?
16%
chance · ±0 pts
+2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
16%
Leave 15+ late
13%
Arrive 1h+ late
4%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.9d
Now
1d
12h
6h
Departs
Lands
Arrive at YYC more than 15 minutes late?
Calm-weather odds: 14% · changed +2 pts in 24h
+2 pts
16%
Yes 16%
No 84%
Leave SEA more than 15 minutes late?
Calm-weather odds: 11% · changed −1 pt in 24h
−1 pt
13%
Yes 13%
No 87%
Arrive at YYC more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
4%
Yes 4%
No 96%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
How late will it get to YYC?
On time or early
83%
15–30 min late
7%
30 min–1 hour late
5%
1–2 hours late
2%
Over 2 hours late
2%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
7pm departures from SEA are often late
↑
This route's recent record
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at SEA
↓
YYC usually runs smoothly
Weather at each end
SEA (origin)
Gusts 9 kt Ceiling 3,500 ft Visibility 10+ mi Precip 0.04 in
YYC (destination)
Gusts 8 kt Ceiling 1,800 ft Visibility 3 mi Precip none
How this resolves
Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.
Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.