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 3998 SCHEDULED · SCHEDULED TIME UNKNOWN

Sunday, October 4 Today

WN 3998 · MCI → BOS

departs 8:58 AM CT · arrives 12:22 PM ET

Forecast issued Sun 7:00 AM ET · 3h before departure

Arrive at BOS more than 15 minutes late?

11% chance · ±0 pts +5 pts · 24h

HOW SURE WE ARE High. The odds now come mostly from live FAA and airport data.

What’s moving the odds

↑ This flight has been late 43% of the time recently

↑ BOS is busy at that time

↑ Cloud base down to 1,100 ft forecast at BOS that day

↓ Early flights usually leave on time

↓ MCI usually runs smoothly

Weather at each end

MCI (origin) Gusts12 kt Ceilingnone (clear) Visibility9 mi Precipnone

BOS (destination) Gusts15 kt Ceiling3,500 ft Visibility10+ mi Precip0.13 in

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 3998 · MCI → BOS

Odds over time