Schedule: FAA flight plans.
SOUTHWEST · FLIGHT WN 4220
DELAYED: NOW PLANNED TO TAKE OFF 7:16 PM PT (56 MIN LATER THAN FIRST FILED)
Today
WN 4220 · SMF → SEA
departs 6:05 PM PT · arrives 8:04 PM PT
Forecast issued Sat 5:00 PM ET · 4h before departure
Odds over time
Arrive at SEA more than 15 minutes late?
99%
chance · ±0 pts
+50 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 SEA?
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On time or early
7%
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15–30 min late
41%
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30 min–1 hour late
0%
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1–2 hours late
16%
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Over 2 hours late
1%
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Cancelled
34%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.