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 640 SCHEDULED · TYPICAL SCHEDULE

Friday, October 2 Today

DL 640 · SFO → ATL

departs 7:50 AM PT · arrives 3:32 PM ET

Forecast issued Fri 12:00 PM ET · 1h after departure

Arrive at ATL more than 15 minutes late?

9% chance · ±1 pts +1 pt · 24h

HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.

How late will it get to ATL?

On time or early
90%
15–30 min late
1%
30 min–1 hour late
5%
1–2 hours late
2%
Over 2 hours late
1%
Cancelled
<1%

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

What’s moving the odds

↑ Arrivals into ATL at that hour are often late

↑ SFO is prone to delays

↑ ATL is busy at that time

↓ Early flights usually leave on time

↓ 7am departures from SFO are usually not late

Weather at each end

SFO (origin) Gusts9 kt Ceiling300 ft Visibility3 mi Precipnone

ATL (destination) Gusts8 kt Ceiling600 ft Visibility5 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 640 · SFO → ATL

Odds over time

How late will it get to ATL?