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 2678
SCHEDULED · TYPICAL SCHEDULE
Tomorrow
F9 2678 · SFO → ONT
departs 9:33 AM PT · arrives 11:07 AM PT
Forecast issued Thu 1:00 PM ET · 24h before departure
Odds over time
Arrive at ONT more than 15 minutes late?
33%
chance · ±0 pts
+7 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 ONT?
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On time or early
66%
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15–30 min late
11%
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30 min–1 hour late
11%
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1–2 hours late
5%
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Over 2 hours late
5%
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Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.