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WN4373 Flight Status Southwest Airlines: Ontario to Las Vegas (SWA4373)

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WN 4373 Ontario to Las Vegas Flight Status

Southwest Airlines Flight WN4373 from Ontario International Airport ONT to Las Vegas McCarran International Airport LAS is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on January 3rd, 2026.
Check the table below for WN4373's most recent flight history:

WN 4373 Flight Status & Schedule

Date Departure Arrival Status
Jan 03 19:29 20:08
Landed Late
 Track >
Dec 27 19:02 19:38
Landed
 Track >
Dec 20 19:13 19:48
Landed
 Track >
Nov 29 19:09 19:47
Landed
 Track >
Nov 22 20:23 21:05
Delayed
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< All ONT Departures All LAS Arrivals >

Southwest Airlines WN 4373 Ontario to Las Vegas Flight Information

Southwest Airlines Flight WN4373 connects Ontario, United States to Las Vegas, United States, taking off from Ontario International Airport ONT and landing at Las Vegas McCarran International Airport LAS.

How long is the WN4373 flight from Ontario to Las Vegas?

The average flight time from Ontario to Las Vegas is 38 minutes. The flight distance is 317 km / 197 miles and the average flight speed is 502 km/h / 312 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4373 Ontario to Las Vegas?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4373 is 4.7/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN4373 arriving at?

Flight WN4373 arrives at Las Vegas McCarran International Airport (LAS) Terminal 1.

When was the latest WN4373 flight?

The latest flight took off on Sunday, January 4th, 2026 with the flight status being Landed on 20:08.

How else can the flight WN4373 be referenced as?

This Southwest Airlines flight can also be referenced as SWA4373, WN 4373, SWA 4373.

How often is flight WN4373 delayed?

On average, 40% of all WN4373 flights are delayed. The average delay is 46 minutes.

Can I get compensation for my delayed or cancelled WN4373 flight or baggage issues?

If your WN4373 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 WN4373 Flight Tracker above for more details.

WN4373 and Ontario ONT to Las Vegas LAS Flights

Other flights departing from Ontario ONT: DL3834, WN3986, WN2576, WN4001

Other flights arriving at Las Vegas LAS: WN2921, DL2560, WN1352, WN4675

All flights connecting Ontario ONT to Las Vegas LAS.

WN4373 Southwest Airlines Flight: Ontario to Las Vegas Route Map

Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
New Flights: S4221 VO765 PC4609 MW7875 WO209 VB962 PC6355 8C4382 GA1406 F59940
See Also: Flight Tracker Airports Airlines News Flights Monitor Delay Compensation
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.