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 251 SCHEDULED · SCHEDULED TIME UNKNOWN

Monday, October 5 Yesterday

DL 251 · BCN → BOS

departs 1:55 AM CEST · arrives 3:40 AM ET

Forecast issued Mon 8:00 PM ET · 24h after departure

Arrive at BOS more than 15 minutes late?

18% chance · ±0 pts −21 pts · 24h

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

What’s moving the odds

↑ Arrivals into BOS at that hour are often late

↑ Later flights pick up delays from earlier in the day

↑ This route's recent record

↓ Other factors

↓ Mondays in October are usually quieter than average

Weather at each end

BCN (origin) Gusts— Ceiling— Visibility— Precip—

BOS (destination) Gusts33 kt Ceiling400 ft Visibility1.5 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 251 · BCN → BOS

Odds over time