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WN 143 Ontario to San Jose Flight Status

Southwest Airlines Flight WN143 from Ontario International Airport ONT to San Jose International Airport SJC is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on August 3rd, 2025.
Check the table below for WN143's most recent flight history:

WN 143 Flight Status & Schedule

Date Departure Arrival Status
Aug 03 10:28 11:20
Landed
Track >
Jul 27 10:31 11:21
Landed
Track >
Jul 20 10:26 11:16
Landed
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Jul 13 10:20 11:08
Landed
Track >
Jul 06 10:29 11:17
Landed
Track >

Southwest Airlines WN 143 Ontario to San Jose Flight Information

Southwest Airlines Flight WN143 connects Ontario, United States to San Jose, United States, taking off from Ontario International Airport ONT and landing at San Jose International Airport SJC.

How long is the WN143 flight from Ontario to San Jose?

The average flight time from Ontario to San Jose is 49 minutes. The flight distance is 536 km / 333 miles and the average flight speed is 652 km/h / 405 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN143 Ontario to San Jose?

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

Which terminal is the flight WN143 arriving at?

Flight WN143 arrives at San Jose International Airport (SJC) Terminal B.

When was the latest WN143 flight?

The latest flight took off on Sunday, August 3rd, 2025 with the flight status being Landed on 11:20.

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, 11% of all WN143 flights are delayed. The average delay is 17 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 Ontario ONT to San Jose SJC Flights

Other flights departing from Ontario ONT: WN4138, WN3439, WN2905, DL3593

Other flights arriving at San Jose SJC: WN1310, WN908, WN3504, WN3628

All flights connecting Ontario ONT to San Jose SJC.

WN143 Southwest Airlines Flight: Ontario to San Jose Route Map

WN143 Southwest Airlines Flight Map: Ontario to San Jose
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.