Direct (nonstop) flights from Ontario to San Jose
1 airline flys nonstop from Ontario International Airport (ONT) to Norman Y Mineta San Jose International (SJC). It's 333 miles (536 km), about 1h 15m in the air. Operated by Southwest Airlines.
Southwest Airlines
Route data last updated: May 30, 2026
Airlines with non-stop flights
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Ontario to San Jose with one stop · direct emits 62 kg CO₂ per passenger
Looking for the return flight?
SJC → ONT: Flights from San Jose to OntarioOther direct flights from Ontario
Direct flights from San Jose (SJC)
Frequently Asked Questions
How long is the direct flight from Ontario to San Jose?
A nonstop flight from Ontario (ONT) to San Jose (SJC) takes approximately 1 hours and 15 minutes. The distance is 333 miles (536 km).
Which airlines fly nonstop from Ontario to San Jose?
Just Southwest Airlines.
Is there a nonstop flight from Ontario to San Jose?
Yes. 1 airline: Southwest Airlines.
How far is Ontario from San Jose?
The flight distance from Ontario to San Jose is 333 miles (536 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as Mumbai to Goa.
What type of aircraft flies from Ontario to San Jose?
At 1h 15m, this route typically uses narrow-body aircraft — Boeing 737 or Airbus A320. Varies by airline.
What is the carbon footprint of a flight from Ontario to San Jose?
Roughly 62 kg CO2 per passenger one-way. That's about the same as driving 310 km.
Is the return flight from San Jose to Ontario also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Ontario to San Jose?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Ontario International Airport for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.