Schedule: the flights that flew on Wednesday, Oct 21, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
WESTJET · FLIGHT WS 1553
SCHEDULED · TYPICAL SCHEDULE
Wednesday, October 28 Tomorrow
WS 1553 · SEA → YYC
departs 10:45 AM PT · arrives 1:35 PM MDT
Forecast issued Tue 5:00 AM ET · 33h before departure
Watch this flight
Other days
Today 15%
Wed 10/28
Thu 10/29 14%
Fri 10/30 16%
Sat 10/31 16%
Sun 11/1 20%
Mon 11/2 19%
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
22%
Arrive 1h+ late
3%
Cancelled
4%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.6d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at YYC more than 15 minutes late?
Calm-weather odds: 11% · changed −2 pts in 24h
−2 pts
16%
Yes 16%
No 84%
Leave SEA more than 15 minutes late?
Calm-weather odds: 10% · changed −2 pts in 24h
−2 pts
22%
Yes 22%
No 78%
Arrive at YYC more than an hour late?
Calm-weather odds: 2% · changed −1 pt in 24h
−1 pt
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed −2 pts in 24h
−2 pts
4%
Yes 4%
No 96%
How late will it get to YYC?
On time or early
81%
15–30 min late
6%
30 min–1 hour late
6%
1–2 hours late
1%
Over 2 hours late
2%
Cancelled
4%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 1,300 ft, visibility down to 2 mi forecast at YYC that day
↑
10am departures from SEA are often late
↑
This route's recent record
↓
YYC usually runs smoothly
↓
Wednesdays in October are usually quieter than average
Weather at each end
SEA (origin)
Gusts 19 kt Ceiling 1,300 ft Visibility 6 mi Precip 0.07 in
YYC (destination)
Gusts 18 kt Ceiling 1,300 ft Visibility 2 mi Precip 0.06 in
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.