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 3971
SCHEDULED · TYPICAL SCHEDULE
Tomorrow
F9 3971 · DFW → PHX
departs 11:54 AM CT · arrives 12:26 PM MT
Forecast issued Thu 11:00 AM ET · 26h before departure
Odds over time
Arrive at PHX more than 15 minutes late?
54%
chance · ±5 pts
+6 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 PHX?
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On time or early
39%
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15–30 min late
9%
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30 min–1 hour late
19%
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1–2 hours late
12%
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Over 2 hours late
6%
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Cancelled
16%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.