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WN400 Flight Status Southwest Airlines: Las Vegas to St. Louis (SWA400)

WN 400 Las Vegas to St. Louis Flight Status

Southwest Airlines Flight WN400 from Las Vegas McCarran International Airport LAS to St. Louis Lambert International Airport STL is not scheduled for today June 3rd, 2026.
The last time the flight was scheduled was on February 7th, 2026.
Check the table below for WN400's most recent flight history:

WN 400 Flight Status & Schedule

Date Departure Arrival Status
Feb 07 11:56 16:36
Landed
 Track >
Jan 31 12:10 16:57
Landed
 Track >
Jan 24 11:58 16:31
Landed
 Track >
Jan 17 11:52 16:48
Landed
 Track >
Jan 10 11:53 16:52
Landed
 Track >
< All LAS Departures All STL Arrivals >

Southwest Airlines WN 400 Las Vegas to St. Louis Flight Information

Southwest Airlines Flight WN400 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 WN400 flight from Las Vegas to St. Louis?

The average flight time from Las Vegas to St. Louis is 2 hours and 47 minutes. The flight distance is 2202 km / 1368 miles and the average flight speed is 794 km/h / 493 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN400 Las Vegas to St. Louis?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN400 is 5/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN400 arriving at?

Flight WN400 arrives at St. Louis Lambert International Airport (STL) Terminal 2.

When was the latest WN400 flight?

The latest flight took off on Saturday, February 7th, 2026 with the flight status being Landed on 16:36.

How else can the flight WN400 be referenced as?

This Southwest Airlines flight can also be referenced as SWA400, WN0400, WN 400, SWA 400.

How often is flight WN400 delayed?

On average, 20% of all WN400 flights are delayed. The average delay is 2 minutes.

Can I get compensation for my delayed or cancelled WN400 flight or baggage issues?

If your WN400 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 WN400 Flight Tracker above for more details.

WN400 and Las Vegas LAS to St. Louis STL Flights

Other flights departing from Las Vegas LAS: WN2381, WN4047, WN1010, WN2117

Other flights arriving at St. Louis STL: WN3428, WN1324, WN1345, WN3805

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

WN400 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: IS1101 S75120 K984 W67632 3E3614 WF7122 HN2550 TK4302 5A608 MS3706
See Also: Flight Tracker Airports Airlines News Flights Monitor Delay Compensation
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.