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 2877
SCHEDULED · TYPICAL SCHEDULE
Tomorrow
WN 2877 · MDW → ROC
departs 1:20 PM CT · arrives 3:55 PM ET
Forecast issued Thu 6:00 PM ET · 20h before departure
Odds over time
Arrive at ROC more than 15 minutes late?
26%
chance · ±1 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 ROC?
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On time or early
73%
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15–30 min late
10%
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30 min–1 hour late
10%
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1–2 hours late
4%
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Over 2 hours late
3%
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Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.