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 4128
SCHEDULED · TYPICAL SCHEDULE
Tomorrow
WN 4128 · LAX → DAL
departs 5:00 AM PT · arrives 10:05 AM CT
Forecast issued Thu 3:00 PM ET · 17h before departure
Odds over time
Arrive at DAL more than 15 minutes late?
14%
chance · ±4 pts
+3 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 DAL?
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On time or early
84%
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15–30 min late
5%
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30 min–1 hour late
6%
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1–2 hours late
3%
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Over 2 hours late
<1%
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Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.