Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

DELTA · FLIGHT DL 437 SCHEDULED · TYPICAL SCHEDULE

Thursday, October 1

DL 437 · LAX → BOS

departs 10:45 AM PT · arrives 7:20 PM ET

Forecast issued Tue 8:00 PM ET · 42h before departure

Arrive at BOS more than 15 minutes late?

26% chance · ±1 pts +2 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
74%
15–30 min late
13%
30 min–1 hour late
8%
1–2 hours late
3%
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

↑ Arrivals into BOS at that hour are often late

↑ 10am departures from LAX are often late

↑ This flight has been late 28% of the time recently

↓ Visibility down to 1 mi forecast at BOS that day

↓ Thursdays in October are usually quieter than average

Weather at each end

LAX (origin) Gusts13 kt Ceiling600 ft Visibility5 mi Precipnone

BOS (destination) Gusts16 kt Ceilingnone (clear) Visibility1 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 437 · LAX → BOS

Odds over time

How late will it get to BOS?