Schedule: FAA flight plans.

WESTJET · FLIGHT WS 1503 IN THE AIR (OFF 1:33 PM PT, ETA 4:43 PM MDT)
Today

WS 1503 · SFO → YYC

took off 1:33 PM PT · expected to land 4:43 PM MDT (scheduled 1:14 PM PT → 4:55 PM MDT)
Forecast issued Mon 4:00 PM ET · 0h before departure

Odds over time

Arrive at YYC more than 15 minutes late?
3% chance · ±0 pts +0 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
MOSTLY HISTORY WEATHER FORECASTS LIVE IN THE AIR 0% 10% 20% 30% 40% 6.7d 2d 1d 12h 6h Departs Now Lands

How late will it get to YYC?

LIVE
  1. On time or early
    97%
  2. 15–30 min late
    3%
  3. 30 min–1 hour late
    <1%
  4. 1–2 hours late
    0%
  5. Over 2 hours late
    0%

Gate arrival compared with the scheduled arrival. The ranges add up to 100%; while it’s in the air they come from the FAA’s arrival estimate.