Tracked live by the FAA, but its flight plan was first seen after takeoff, so we don't know the scheduled time and can't say whether it's late.

DELTA · FLIGHT DL 1809 SCHEDULED · SCHEDULED TIME UNKNOWN

Saturday, October 3 Today

DL 1809 · DFW → BOS

departs 9:33 PM CT · arrives 1:28 AM ET

Forecast issued Sat 2:00 PM ET · 9h before departure

Arrive at BOS more than 15 minutes late?

50% chance · ±0 pts – · 24h

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

What’s moving the odds

↑ 9pm departures from DFW are often late

↑ Cloud base down to 400 ft, visibility down to 2 mi, 0.5 in of rain forecast at DFW that day

↑ DFW is busy at that time

↓ Mostly benign weather forecast at BOS

↓ BOS usually runs smoothly

Weather at each end

DFW (origin) Gusts11 kt Ceiling400 ft Visibility2 mi Precip0.45 in

BOS (destination) Gusts17 kt Ceiling5,500 ft 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 1809 · DFW → BOS

Odds over time