Schedule: a typical summer Thursday (the flights of Jul 30, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

DELTA · FLIGHT DL 507 SCHEDULED · TYPICAL SCHEDULE

Thursday, October 1 Today

DL 507 · LAX → BOS

departs 9:00 PM PT · arrives 5:30 AM ET

Forecast issued Thu 10:00 PM ET · 2h before departure

Arrive at BOS more than 15 minutes late?

42% chance · ±0 pts +19 pts · 24h

HOW SURE WE ARE High. The odds now come mostly from live FAA and airport data.

How late will it get to BOS?

On time or early
57%
15–30 min late
30%
30 min–1 hour late
0%
1–2 hours late
10%
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

↑ 9pm departures from LAX are often late

↑ Later flights pick up delays from earlier in the day

↑ LAX is busy at that time

↓ Cloud base down to 1,000 ft forecast at LAX that day

↓ Thursdays in October are usually quieter than average

Weather at each end

LAX (origin) Gusts13 kt Ceiling1,000 ft Visibility6 mi Precipnone

BOS (destination) Gusts19 kt Ceiling11,000 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 507 · LAX → BOS

Odds over time

How late will it get to BOS?