Schedule: the flights that flew on Friday, Oct 23, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

DELTA · FLIGHT DL 1661 SCHEDULED · TYPICAL SCHEDULE

Friday, October 30 Tomorrow

DL 1661 · DCA → BOS

departs 5:17 PM ET · arrives 6:51 PM ET

Forecast issued Thu 1:00 PM ET · 28h before departure

Arrive at BOS more than 15 minutes late?

26% chance · ±3 pts +0 pts · 24h

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

How late will it get to BOS?

On time or early
74%
15–30 min late
8%
30 min–1 hour late
9%
1–2 hours late
6%
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 BOS at that hour are often late

↑ Later flights pick up delays from earlier in the day

↑ 5pm departures from DCA are often late

↓ Mostly benign weather forecast at BOS

↓ Mostly benign weather forecast at DCA

Weather at each end

DCA (origin) Gusts18 kt Ceilingnone (clear) Visibility10+ mi Precipnone

BOS (destination) Gusts21 kt Ceilingnone (clear) 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 1661 · DCA → BOS

Odds over time

How late will it get to BOS?