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WN 4121 San Antonio to Las Vegas Flight Status

Southwest Airlines Flight WN4121 from San Antonio International Airport SAT to Las Vegas McCarran International Airport LAS is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on August 2nd, 2025.
Check the table below for WN4121's most recent flight history:

WN 4121 Flight Status & Schedule

Date Departure Arrival Status
Aug 02 20:25 20:45
Landed
Track >
Jul 26 20:33 20:53
Landed
Track >
Jul 19 20:18 20:32
Landed
Track >
Jul 12 20:00 20:15
Landed
Track >
Jul 05 20:56 21:20
Landed Late
Track >

Southwest Airlines WN 4121 San Antonio to Las Vegas Flight Information

Southwest Airlines Flight WN4121 connects San Antonio, United States to Las Vegas, United States, taking off from San Antonio International Airport SAT and landing at Las Vegas McCarran International Airport LAS.

How long is the WN4121 flight from San Antonio to Las Vegas?

The average flight time from San Antonio to Las Vegas is 2 hours and 21 minutes. The flight distance is 1717 km / 1067 miles and the average flight speed is 728 km/h / 452 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4121 San Antonio to Las Vegas?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4121 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN4121 arriving at?

Flight WN4121 arrives at Las Vegas McCarran International Airport (LAS) Terminal 1.

When was the latest WN4121 flight?

The latest flight took off on Sunday, August 3rd, 2025 with the flight status being Landed on 20:45.

How else can the flight WN4121 be referenced as?

This Southwest Airlines flight can also be referenced as SWA4121, WN 4121, SWA 4121.

How often is flight WN4121 delayed?

On average, 22% of all WN4121 flights are delayed. The average delay is 16 minutes.

Can I get compensation for my delayed or cancelled WN4121 flight or baggage issues?

If your WN4121 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 WN4121 Flight Tracker above for more details.

WN4121 and San Antonio SAT to Las Vegas LAS Flights

Other flights departing from San Antonio SAT: WN176, WN3271, AA5002, WN4668

Other flights arriving at Las Vegas LAS: WN987, WN3310, WN3478, WN2820

All flights connecting San Antonio SAT to Las Vegas LAS.

WN4121 Southwest Airlines Flight: San Antonio to Las Vegas Route Map

WN4121 Southwest Airlines Flight Map: San Antonio to Las Vegas
Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.