Southwest Airlines

WN3996Ontario to San Jose

Name: Southwest Airlines WN3996 Ontario to San Jose: on-time record
Creator: TripStow
License: https://tripstow.com/notices

Southwest Airlines flight WN3996 flies from Ontario (ONT) to San Jose (SJC), 536 km. Over August 2025 to July 2026 it usually arrives about 5 minutes late: 78% of 274 flights arrived within 15 minutes of schedule and 0.7% were cancelled (US Department of Transportation data).

On-time record, last 12 months

78%

on time (within 15 min)

10%

more than 30 min late

0.7%

cancelled

+5 min

average arrival vs schedule

Every operation of WN3996, August 2025 to July 2026: 274 flights. Source: US Bureau of Transportation Statistics, public domain.

Routes flown as WN3996

Ontario (ONT) to San Jose (SJC)64 flights
San Diego (SAN) to Austin Bergstrom (AUS)58 flights
Portland (PDX) to San Jose (SJC)50 flights
Austin Bergstrom (AUS) to Washington (DCA)42 flights
Chicago Midway (MDW) to San Diego (SAN)28 flights
Phoenix Sky Harbor (PHX) to Louisville (SDF)8 flights
Baltimore (BWI) to Portland (PDX)8 flights
Savannah Hilton Head (SAV) to Dallas Love Field (DAL)8 flights
Dallas Love Field (DAL) to Oakland (OAK)8 flights

Other flights from Ontario to San Jose

WN106 WN1131 WN1313 WN1368 WN143 WN1567 WN1698 WN1855 WN1966 WN2034 WN2041 WN2057

More about Ontario (ONT) and San Jose (SJC).

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