Schedule: a typical Sunday (the flights of Jul 26, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

DELTA · FLIGHT DL 566 SCHEDULED · TYPICAL SCHEDULE

Sunday, October 4

DL 566 · STL → ATL

departs 1:22 PM CT · arrives 4:07 PM ET

Forecast issued Thu 7:00 PM ET · 67h before departure

Arrive at ATL more than 15 minutes late?

16% chance · ±6 pts +6 pts · 24h

HOW SURE WE ARE Moderate. The odds now blend history with early weather forecasts.

How late will it get to ATL?

On time or early
83%
15–30 min late
5%
30 min–1 hour late
5%
1–2 hours late
4%
Over 2 hours late
2%
Cancelled
1%

Gate arrival compared with the scheduled arrival. The ranges add up to 100%.

What’s moving the odds

↑ Cloud base down to 300 ft, visibility down to 2 mi, 0.7 in of rain forecast at ATL that day

↑ Arrivals into ATL at that hour are often late

↑ 1pm departures from STL are often late

↓ Mostly benign weather forecast at STL

↓ ATL usually runs smoothly

Weather at each end

STL (origin) Gusts8 kt Ceilingnone (clear) Visibility10+ mi Precipnone

ATL (destination) Gusts10 kt Ceiling500 ft Visibility2 mi Precip0.67 in

How this resolves

Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.

Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.

DL 566 · STL → ATL

Odds over time

How late will it get to ATL?