Schedule: a typical Friday (the flights of Jul 31, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

DELTA · FLIGHT DL 1257 SCHEDULED · TYPICAL SCHEDULE

Friday, October 2 Tomorrow

DL 1257 · ATL → BWI

departs 7:30 PM ET · arrives 9:26 PM ET

Forecast issued Thu 4:00 AM ET · 40h before departure

Arrive at BWI more than 15 minutes late?

33% chance · ±1 pts +5 pts · 24h

HOW SURE WE ARE Moderate. The odds now blend history with early weather forecasts.

How late will it get to BWI?

On time or early
67%
15–30 min late
11%
30 min–1 hour late
12%
1–2 hours late
7%
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

↑ Arrivals into BWI at that hour are often late

↑ Later flights pick up delays from earlier in the day

↑ 7pm departures from ATL are often late

↓ ATL usually runs smoothly

↓ Mostly benign weather forecast at ATL

Weather at each end

ATL (origin) Gusts11 kt Ceiling4,500 ft Visibility10+ mi Precip0.02 in

BWI (destination) Gusts15 kt Ceiling2,800 ft Visibility10+ mi Precip0.01 in

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 1257 · ATL → BWI

Odds over time

How late will it get to BWI?