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WN 4099 Ontario to San Jose Flight Status

Southwest Airlines Flight WN4099 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 October 30th, 2025.
Check the table below for WN4099's most recent flight history:

WN 4099 Flight Status & Schedule

Date Departure Arrival Status
Oct 30 21:23 22:13
Delayed
Track >
Oct 29 18:37 19:28
Landed
Track >
Oct 28 19:49 20:39
Landed Late
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Oct 27 20:47 21:38
Landed Late
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Oct 26 21:40 22:33
Landed Late
Track >

Southwest Airlines WN 4099 Ontario to San Jose Flight Information

Southwest Airlines Flight WN4099 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 WN4099 flight from Ontario to San Jose?

The average flight time from Ontario to San Jose is 50 minutes. The flight distance is 536 km / 333 miles and the average flight speed is 634 km/h / 394 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4099 Ontario to San Jose?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4099 is 4.7/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN4099 arriving at?

Flight WN4099 arrives at San Jose International Airport (SJC) Terminal B.

When was the latest WN4099 flight?

The latest flight took off on Friday, October 31st, 2025 with the flight status being En-Route on 22:13.

How else can the flight WN4099 be referenced as?

This Southwest Airlines flight can also be referenced as SWA4099, WN 4099, SWA 4099.

How often is flight WN4099 delayed?

On average, 50% of all WN4099 flights are delayed. The average delay is 39 minutes.

Can I get compensation for my delayed or cancelled WN4099 flight or baggage issues?

If your WN4099 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 WN4099 Flight Tracker above for more details.

WN4099 and Ontario ONT to San Jose SJC Flights

Other flights departing from Ontario ONT: WN4012, WN1278, WN2289, WN4104

Other flights arriving at San Jose SJC: WN2696, WN4555, WN4232, WN3585

All flights connecting Ontario ONT to San Jose SJC.

WN4099 Southwest Airlines Flight: Ontario to San Jose Route Map

WN4099 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.