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 1663 IN THE AIR (OFF 2:36 PM MT, ETA 5:14 PM CT) · SCHEDULED TIME UNKNOWN

Tuesday, September 29 Today

WN 1663 · DEN → SAT

took off 2:36 PM MT · expected to land 5:14 PM CT (scheduled time unknown)

Forecast issued Tue 3:00 PM ET · 2h before departure

Arrive at SAT more than 15 minutes late?

28% chance · ±2 pts −7 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 41% of the time recently

↑ 2pm departures from DEN are often late

↑ Other factors

↓ Tuesdays in September are usually quieter than average

↓ Mostly benign weather forecast at DEN

Weather at each end

DEN (origin) Gusts9 kt Ceiling6,000 ft Visibility10+ mi Precipnone

SAT (destination) Gusts23 kt Ceiling1,500 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 1663 · DEN → SAT

Odds over time