Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

DELTA · FLIGHT DL 866 SCHEDULED · TYPICAL SCHEDULE

Tuesday, September 29 Today

DL 866 · DTW → MIA

departs 3:59 PM ET · arrives 7:18 PM ET

Forecast issued Tue 3:00 PM ET · 1h before departure

Arrive at MIA more than 15 minutes late?

23% chance · ±2 pts +3 pts · 24h

HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.

How late will it get to MIA?

On time or early
76%
15–30 min late
9%
30 min–1 hour late
6%
1–2 hours late
5%
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

↑ Arrivals into MIA at that hour are often late

↑ Later flights pick up delays from earlier in the day

↑ 3pm departures from DTW are often late

↓ Tuesdays in September are usually quieter than average

↓ Mostly benign weather forecast at DTW

Weather at each end

DTW (origin) Gusts9 kt Ceilingnone (clear) Visibility9 mi Precipnone

MIA (destination) Gusts20 kt Ceiling1,600 ft Visibility0.5 mi Precip1.17 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 866 · DTW → MIA

Odds over time

How late will it get to MIA?