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 816 SCHEDULED · TYPICAL SCHEDULE

Friday, October 2

DL 816 · SAT → BOS

departs 1:20 PM CT · arrives 6:47 PM ET

Forecast issued Tue 10:00 PM ET · 64h before departure

Arrive at BOS more than 15 minutes late?

34% chance · ±5 pts +1 pt · 24h

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

How late will it get to BOS?

On time or early
66%
15–30 min late
6%
30 min–1 hour late
16%
1–2 hours late
8%
Over 2 hours late
4%
Cancelled
<1%

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

What’s moving the odds

↑ This flight has been late 39% of the time recently

↑ Arrivals into BOS at that hour are often late

↑ Cloud base down to 400 ft, 1.8 in of rain forecast at SAT that day

↓ Mostly benign weather forecast at BOS

↓ SAT usually runs smoothly

Weather at each end

SAT (origin) Gusts12 kt Ceiling400 ft Visibility4 mi Precip1.79 in

BOS (destination) Gusts19 kt Ceiling9,000 ft Visibility10+ mi Precipnone

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 816 · SAT → BOS

Odds over time

How late will it get to BOS?