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.

SOUTHWEST · FLIGHT WN 4999 LANDED 1:57 PM ET, ~31 MIN LATE · SCHEDULED TIME UNKNOWN

Saturday, October 3 Yesterday

WN 4999 · BNA → BOS

took off 10:55 AM CT · landed 1:57 PM ET (scheduled time unknown)

Forecast issued Sat 10:00 PM ET · 10h after departure

Arrive at BOS more than 15 minutes late?

25% chance · ±0 pts – · 24h

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

What’s moving the odds

↑ This flight has been late 21% of the time recently

↑ Arrivals into BOS at that hour are often late

↑ WN's recent on-time record

↓ Mostly benign weather forecast at BOS

↓ Early flights usually leave on time

Weather at each end

BNA (origin) Gusts9 kt Ceiling300 ft Visibility3 mi Precipnone

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.

WN 4999 · BNA → BOS

Odds over time