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 522 SCHEDULED · TYPICAL SCHEDULE

Wednesday, September 30 Tomorrow

DL 522 · FLL → BOS

departs 8:51 PM ET · arrives 12:16 AM ET

Forecast issued Tue 4:00 PM ET · 29h before departure

Arrive at BOS more than 15 minutes late?

28% chance · ±3 pts +10 pts · 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
71%
15–30 min late
8%
30 min–1 hour late
10%
1–2 hours late
6%
Over 2 hours late
3%
Cancelled
2%

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

What’s moving the odds

↑ 0.3 in of rain forecast at FLL that day

↑ 8pm departures from FLL are often late

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

↓ Wednesdays in September are usually quieter than average

↓ Mostly benign weather forecast at BOS

Weather at each end

FLL (origin) Gusts15 kt Ceiling6,000 ft Visibility10+ mi Precip0.33 in

BOS (destination) Gusts8 kt Ceiling2,200 ft Visibility7 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 522 · FLL → BOS

Odds over time

How late will it get to BOS?