Schedule: a typical Friday (the flights of Jul 31, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4684
SCHEDULED · TYPICAL SCHEDULE
WN 4684 · STL → LGA
departs 7:55 PM CT · arrives 11:25 PM ET
Forecast issued Wed 9:00 PM ET · 48h before departure
Odds over time
Arrive at LGA more than 15 minutes late?
50%
chance · ±8 pts
+12 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
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How late will it get to LGA?
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On time or early
49%
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15–30 min late
19%
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30 min–1 hour late
15%
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1–2 hours late
11%
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Over 2 hours late
3%
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Cancelled
3%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.