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 4478
SCHEDULED · TYPICAL SCHEDULE
Tomorrow
WN 4478 · DAL → LGA
departs 12:20 PM CT · arrives 4:45 PM ET
Forecast issued Thu 6:00 PM ET · 19h before departure
Odds over time
Arrive at LGA more than 15 minutes late?
50%
chance · ±8 pts
+0 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
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How late will it get to LGA?
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On time or early
48%
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15–30 min late
10%
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30 min–1 hour late
15%
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1–2 hours late
13%
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Over 2 hours late
9%
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Cancelled
4%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.