Schedule: FAA flight plans.
SOUTHWEST · FLIGHT WN 4020
SCHEDULED
Today
WN 4020 · SNA → SMF
departs 2:10 PM PT · arrives 3:55 PM PT
Your aircraft is N8904L (B38M), coming in as WN 3849 from SJC: in the air, landing about 1:04 PM PT, 60 min before departure.
Forecast issued Thu 2:00 PM ET · 3h before departure
Odds over time
Arrive at SMF more than 15 minutes late?
39%
chance · ±0 pts
+13 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
61%
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15–30 min late
26%
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30 min–1 hour late
0%
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1–2 hours late
11%
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Over 2 hours late
<1%
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Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.