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.
FRONTIER · FLIGHT F9 3645
SCHEDULED · TYPICAL SCHEDULE
F9 3645 · AUS → LAS
departs 12:47 PM CT · arrives 1:40 PM PT
Forecast issued Wed 10:00 PM ET · 40h before departure
Odds over time
Arrive at LAS more than 15 minutes late?
38%
chance · ±4 pts
+0 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 LAS?
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On time or early
61%
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15–30 min late
11%
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30 min–1 hour late
15%
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1–2 hours late
7%
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Over 2 hours late
5%
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Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.