Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

DELTA · FLIGHT DL 378 SCHEDULED · TYPICAL SCHEDULE

Wednesday, September 30 Tomorrow

DL 378 · ATL → DCA

departs 8:55 PM ET · arrives 10:48 PM ET

Forecast issued Tue 6:00 PM ET · 27h before departure

Arrive at DCA more than 15 minutes late?

16% chance · ±0 pts +0 pts · 24h

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

How late will it get to DCA?

On time or early
84%
15–30 min late
6%
30 min–1 hour late
3%
1–2 hours late
5%
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

↑ This flight has been late 34% of the time recently

↑ Arrivals into DCA at that hour are often late

↑ Later flights pick up delays from earlier in the day

↓ Wednesdays in September are usually quieter than average

↓ Mostly benign weather forecast at ATL

Weather at each end

ATL (origin) Gusts11 kt Ceilingnone (clear) Visibility10+ mi Precipnone

DCA (destination) Gusts10 kt Ceilingnone (clear) Visibility7 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 378 · ATL → DCA

Odds over time

How late will it get to DCA?