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 1861 SCHEDULED · TYPICAL SCHEDULE

Friday, October 2 Tomorrow

DL 1861 · ATL → SJU

departs 6:45 PM ET · arrives 10:29 PM AT

Forecast issued Thu 10:00 AM ET · 33h before departure

Arrive at SJU more than 15 minutes late?

21% chance · ±2 pts −2 pts · 24h

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

How late will it get to SJU?

On time or early
79%
15–30 min late
7%
30 min–1 hour late
7%
1–2 hours late
5%
Over 2 hours late
<1%
Cancelled
<1%

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

What’s moving the odds

↑ Later flights pick up delays from earlier in the day

↑ 6pm departures from ATL are often late

↑ Mostly benign weather forecast at SJU

↓ ATL usually runs smoothly

↓ Fridays in October are usually quieter than average

Weather at each end

ATL (origin) Gusts11 kt Ceiling7,000 ft Visibility10+ mi Precipnone

SJU (destination) Gusts14 kt Ceiling3,900 ft Visibility10+ mi Precip0.09 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 1861 · ATL → SJU

Odds over time

How late will it get to SJU?