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 1247
SCHEDULED · TYPICAL SCHEDULE
DL 1247 · ORD → ATL
departs 6:35 AM CT · arrives 9:37 AM ET
Forecast issued Tue 5:00 PM ET · 63h before departure
Odds over time
Arrive at ATL more than 15 minutes late?
15%
chance · ±2 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 ATL?
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On time or early
84%
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15–30 min late
2%
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30 min–1 hour late
8%
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1–2 hours late
3%
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Over 2 hours late
3%
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Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.