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 1507
SCHEDULED · TYPICAL SCHEDULE
Wednesday, October 28 Tomorrow
WS 1507 · SFO → YYC
departs 6:07 PM PT · arrives 9:49 PM MDT
Forecast issued Wed 12:00 AM ET · 21h before departure
Watch this flight
Odds over time
Arrive at YYC more than 15 minutes late?
22%
chance · ±2 pts
+4 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
22%
Leave 15+ late
19%
Arrive 1h+ late
7%
Cancelled
6%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.9d
2d
Now
12h
6h
Departs
Lands
Arrive at YYC more than 15 minutes late?
Calm-weather odds: 10% · changed +4 pts in 24h
+4 pts
22%
Yes 22%
No 78%
Leave SFO more than 15 minutes late?
Calm-weather odds: 11% · changed +0 pts in 24h
+0 pts
19%
Yes 19%
No 81%
Arrive at YYC more than an hour late?
Calm-weather odds: 5% · changed +1 pt in 24h
+1 pt
7%
Yes 7%
No 93%
Cancelled?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
6%
Yes 6%
No 94%
How late will it get to YYC?
On time or early
73%
15–30 min late
5%
30 min–1 hour late
10%
1–2 hours late
4%
Over 2 hours late
2%
Cancelled
6%
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
↑
6pm departures from SFO are often late
↑
This route's recent record
↓
Mostly benign weather forecast at SFO
↓
Wednesdays in October are usually quieter than average
Weather at each end
SFO (origin)
Gusts 14 kt Ceiling none (clear) Visibility 10+ mi Precip none
YYC (destination)
Gusts 17 kt Ceiling 1,100 ft Visibility 2 mi Precip 0.02 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.