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 1204
SCHEDULED · TYPICAL SCHEDULE
F9 1204 · MIA → PHL
departs 9:21 PM ET · arrives 12:27 AM ET
Forecast issued Wed 9:00 AM ET · 60h before departure
Odds over time
Arrive at PHL more than 15 minutes late?
37%
chance · ±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 PHL?
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On time or early
62%
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15–30 min late
6%
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30 min–1 hour late
9%
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1–2 hours late
12%
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Over 2 hours late
9%
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Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.