Schedule: the flights that flew on Sunday, Oct 25, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

DELTA · FLIGHT DL 931 SCHEDULED · TYPICAL SCHEDULE

Sunday, November 1 Tomorrow

DL 931 · LAS → BOS

departs 10:06 PM PT · arrives 6:11 AM ET

Forecast issued Sat 1:00 AM ET · 49h before departure

Arrive at BOS more than 15 minutes late?

34% chance · ±4 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
65%
15–30 min late
7%
30 min–1 hour late
16%
1–2 hours late
8%
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

↑ 10pm departures from LAS are often late

↑ LAS is prone to delays

↑ This flight has been late 25% of the time recently

↓ BOS usually runs smoothly

↓ Mostly benign weather forecast at BOS

Weather at each end

LAS (origin) Gusts26 kt Ceiling1,700 ft Visibility3 mi Precip0.18 in

BOS (destination) Gusts12 kt Ceilingnone (clear) 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 931 · LAS → BOS

Odds over time

How late will it get to BOS?