Schedule: FAA flight plans.
SOUTHWEST · FLIGHT WN 4143
IN THE AIR (OFF 6:16 AM CT, ETA 6:47 AM PT)
Today
WN 4143 · SAT → SAN
took off 6:16 AM CT · expected to land 6:47 AM PT (scheduled 5:58 AM CT → 6:57 AM PT)
Forecast issued Wed 6:00 AM ET · 1h before departure
Odds over time
Arrive at SAN more than 15 minutes late?
3%
chance · ±0 pts
−1 pt · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
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How late will it get to SAN?
LIVE
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On time or early
97%
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15–30 min late
3%
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30 min–1 hour late
<1%
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1–2 hours late
0%
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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.