Schedule: FAA flight plans.
SOUTHWEST · FLIGHT WN 4173
DELAYED: NOW PLANNED TO TAKE OFF 6:28 PM MT (2 H 43 MIN LATER THAN FIRST FILED)
Today
WN 4173 · SLC → SMF
departs 3:30 PM MT · arrives 4:18 PM PT
Forecast issued Sat 4:00 PM ET · 2h before departure
Odds over time
Arrive at SMF more than 15 minutes late?
100%
chance · ±0 pts
+40 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
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How late will it get to SMF?
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On time or early
27%
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15–30 min late
50%
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30 min–1 hour late
0%
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1–2 hours late
8%
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Over 2 hours late
2%
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Cancelled
13%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.