Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

DELTA · FLIGHT DL 521 SCHEDULED · TYPICAL SCHEDULE

Friday, October 2 Today

DL 521 · DFW → LAX

departs 1:45 PM CT · arrives 2:58 PM PT

Forecast issued Fri 6:00 AM ET · 9h before departure

Arrive at LAX more than 15 minutes late?

46% chance · ±0 pts +21 pts · 24h

HOW SURE WE ARE Good. The odds now lean mostly on firmed-up weather forecasts.

How late will it get to LAX?

On time or early
51%
15–30 min late
19%
30 min–1 hour late
11%
1–2 hours late
9%
Over 2 hours late
5%
Cancelled
6%

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

What’s moving the odds

↑ Cloud base down to 900 ft, 0.5 in of rain forecast at DFW that day

↑ 1pm departures from DFW are often late

↑ DFW is prone to delays

↓ Visibility down to 0.8 mi forecast at LAX that day

↓ Fridays in October are usually quieter than average

Weather at each end

DFW (origin) Gusts19 kt Ceiling900 ft Visibility4 mi Precip0.43 in

LAX (destination) Gusts12 kt Ceilingnone (clear) Visibility2 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 521 · DFW → LAX

Odds over time

How late will it get to LAX?