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WN143 Flight Status Southwest Airlines: Las Vegas to St. Louis (SWA143)

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WN 143 Las Vegas to St. Louis Flight Status

Southwest Airlines Flight WN143 from Las Vegas McCarran International Airport LAS to St. Louis Lambert International Airport STL is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on December 13th, 2025.
Check the table below for WN143's most recent flight history:

WN 143 Flight Status & Schedule

Date Departure Arrival Status
Dec 13 12:35 17:17
Landed Late
 Track >
Dec 06 12:15 16:46
Landed
 Track >
Nov 15 12:23 17:04
Landed
 Track >
Nov 08 12:10 16:43
Landed
 Track >
< All LAS Departures All STL Arrivals >

Southwest Airlines WN 143 Las Vegas to St. Louis Flight Information

Southwest Airlines Flight WN143 connects Las Vegas, United States to St. Louis, United States, taking off from Las Vegas McCarran International Airport LAS and landing at St. Louis Lambert International Airport STL.

How long is the WN143 flight from Las Vegas to St. Louis?

The average flight time from Las Vegas to St. Louis is 2 hours and 36 minutes. The flight distance is 2202 km / 1368 miles and the average flight speed is 844 km/h / 524 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN143 Las Vegas to St. Louis?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN143 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN143 arriving at?

Flight WN143 arrives at St. Louis Lambert International Airport (STL) Terminal 2.

When was the latest WN143 flight?

The latest flight took off on Saturday, December 13th, 2025 with the flight status being Landed on 17:17.

How else can the flight WN143 be referenced as?

This Southwest Airlines flight can also be referenced as SWA143, WN0143, WN 143, SWA 143.

How often is flight WN143 delayed?

On average, 50% of all WN143 flights are delayed. The average delay is 10 minutes.

Can I get compensation for my delayed or cancelled WN143 flight or baggage issues?

If your WN143 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 WN143 Flight Tracker above for more details.

WN143 and Las Vegas LAS to St. Louis STL Flights

Other flights departing from Las Vegas LAS: AA2634, DL793, WN2921, UA2334

Other flights arriving at St. Louis STL: WN1888, WN1352, WN3557, WN3580

All flights connecting Las Vegas LAS to St. Louis STL.

WN143 Southwest Airlines Flight: Las Vegas to St. Louis Route Map

Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
New Flights: 2I4283 OQ2162 XC9027 QU543 HN201 U69911 MW3432 JU9731 MW4757 5H293
See Also: Flight Tracker Airports Airlines News Flights Monitor Delay Compensation
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.