Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

DELTA · FLIGHT DL 866 SCHEDULED · TYPICAL SCHEDULE

Wednesday, September 30 Today

DL 866 · MIA → DTW

departs 8:26 PM ET · arrives 11:42 PM ET

Forecast issued Wed 8:00 AM ET · 12h before departure

Arrive at DTW more than 15 minutes late?

51% chance · ±0 pts +19 pts · 24h

HOW SURE WE ARE Good. The odds now lean mostly on firmed-up weather forecasts.

How late will it get to DTW?

On time or early
48%
15–30 min late
26%
30 min–1 hour late
14%
1–2 hours late
8%
Over 2 hours late
3%
Cancelled
<1%

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

What’s moving the odds

↑ Mostly benign weather forecast at MIA

↑ 8pm departures from MIA are often late

↑ Later flights pick up delays from earlier in the day

↓ Wednesdays in September are usually quieter than average

↓ DTW usually runs smoothly

Weather at each end

MIA (origin) Gusts19 kt Ceiling6,000 ft Visibility8 mi Precip0.22 in

DTW (destination) Gusts14 kt Ceiling3,500 ft Visibility7 mi Precip0.03 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 · MIA → DTW

Odds over time

How late will it get to DTW?