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 4550 SCHEDULED · SCHEDULED TIME UNKNOWN

Wednesday, September 30 Today

WN 4550 · SLC → PHX

departs 6:35 PM MT · arrives 6:44 PM MT

Forecast issued Wed 6:00 PM ET · 3h before departure

Arrive at PHX more than 15 minutes late?

39% chance · ±0 pts +20 pts · 24h

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

What’s moving the odds

↑ Other factors

↑ Arrivals into PHX at that hour are often late

↑ Later flights pick up delays from earlier in the day

↓ Wednesdays in September are usually quieter than average

↓ Mostly benign weather forecast at PHX

Weather at each end

SLC (origin) Gusts12 kt Ceilingnone (clear) Visibility10+ mi Precipnone

PHX (destination) Gusts9 kt Ceiling11,000 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 4550 · SLC → PHX

Odds over time