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WN3999 Flight Status Southwest Airlines: Houston to Phoenix (SWA3999)

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WN 3999 Houston to Phoenix Flight Status

Southwest Airlines Flight WN3999 from Houston William P. Hobby Airport HOU to Phoenix Sky Harbor International Airport PHX is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on June 2nd, 2025.
Check the table below for WN3999's most recent flight history:

WN 3999 Flight Status & Schedule

Date Departure Arrival Status
Jun 02 21:44 22:11
Landed
 Track >
Jun 01 22:46 23:12
Landed
 Track >
May 31 20:57 21:21
Landed
 Track >
< All HOU Departures All PHX Arrivals >

Southwest Airlines WN 3999 Houston to Phoenix Flight Information

Southwest Airlines Flight WN3999 connects Houston, United States to Phoenix, United States, taking off from Houston William P. Hobby Airport HOU and landing at Phoenix Sky Harbor International Airport PHX.

How long is the WN3999 flight from Houston to Phoenix?

The average flight time from Houston to Phoenix is 2 hours and 25 minutes. The flight distance is 1639 km / 1018 miles and the average flight speed is 675 km/h / 419 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN3999 Houston to Phoenix?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN3999 is 5/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN3999 arriving at?

Flight WN3999 arrives at Phoenix Sky Harbor International Airport (PHX) Terminal 4.

When was the latest WN3999 flight?

The latest flight took off on Tuesday, June 3rd, 2025 with the flight status being Landed on 22:11.

How else can the flight WN3999 be referenced as?

This Southwest Airlines flight can also be referenced as SWA3999, WN 3999, SWA 3999.

How often is flight WN3999 delayed?

On average, 0% of all WN3999 flights are delayed. The average delay is 0 minutes.

Can I get compensation for my delayed or cancelled WN3999 flight or baggage issues?

If your WN3999 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.

See our WN3999 Flight Tracker above for more details.

WN3999 and Houston HOU to Phoenix PHX Flights

Other flights departing from Houston HOU: WN1463, WN4566, WN2931, AA5189

Other flights arriving at Phoenix PHX: WN4477, WN4262, WN426, WN4375

All flights connecting Houston HOU to Phoenix PHX.

WN3999 Southwest Airlines Flight: Houston to Phoenix Route Map

WN3999 Southwest Airlines Flight Map: Houston to Phoenix
Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
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Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.