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 4840
SCHEDULED · TYPICAL SCHEDULE
Tomorrow
WN 4840 · MCO → ISP
departs 8:55 PM ET · arrives 11:45 PM ET
Forecast issued Thu 12:00 AM ET · 45h before departure
Odds over time
Arrive at ISP more than 15 minutes late?
45%
chance · ±3 pts
+8 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 ISP?
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On time or early
54%
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15–30 min late
12%
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30 min–1 hour late
11%
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1–2 hours late
17%
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Over 2 hours late
5%
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Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.