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.
DELTA · FLIGHT DL 3172
SCHEDULED · TYPICAL SCHEDULE
Tomorrow
DL 3172 · ONT → SLC
departs 1:00 PM PT · arrives 3:47 PM MT
Forecast issued Thu 4:00 PM ET · 24h before departure
Odds over time
Arrive at SLC more than 15 minutes late?
8%
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 SLC?
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On time or early
91%
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15–30 min late
2%
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30 min–1 hour late
1%
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1–2 hours late
4%
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Over 2 hours late
1%
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Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.