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 1139
SCHEDULED · TYPICAL SCHEDULE
Tomorrow
WN 1139 · MDW → BZN
departs 11:00 AM CT · arrives 1:10 PM MT
Forecast issued Thu 5:00 PM ET · 19h before departure
Odds over time
Arrive at BZN more than 15 minutes late?
15%
chance · ±1 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 BZN?
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On time or early
85%
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15–30 min late
4%
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30 min–1 hour late
8%
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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%.