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 4434
SCHEDULED · TYPICAL SCHEDULE
Tomorrow
WN 4434 · DEN → BWI
departs 11:45 AM MT · arrives 5:15 PM ET
Forecast issued Thu 3:00 PM ET · 23h before departure
Odds over time
Arrive at BWI more than 15 minutes late?
24%
chance · ±5 pts
+1 pt · 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 BWI?
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On time or early
76%
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15–30 min late
16%
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30 min–1 hour late
5%
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1–2 hours late
2%
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Over 2 hours late
<1%
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Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.