Direct (nonstop) flights from San Jose to Ontario
1 airline flys nonstop from Norman Y Mineta San Jose International (SJC) to Ontario International Airport (ONT). It's 333 miles (536 km), about 1h 15m in the air. Operated by Southwest Airlines.
Southwest Airlines
Route data last updated: May 26, 2026
Airlines with non-stop flights
WN
Southwest Airlines
Alternative Routes
Other ways to fly from San Jose to Ontario with one stop · direct emits 62 kg CO₂ per passenger
Looking for the return flight?
ONT → SJC: Flights from Ontario to San JoseOther direct flights from San Jose
Direct flights from Ontario (ONT)
Frequently Asked Questions
How long is the direct flight from San Jose to Ontario?
A nonstop flight from San Jose (SJC) to Ontario (ONT) takes approximately 1 hours and 15 minutes. The distance is 333 miles (536 km).
Which airlines fly nonstop from San Jose to Ontario?
Just Southwest Airlines.
Is there a nonstop flight from San Jose to Ontario?
Yes. 1 airline: Southwest Airlines.
How far is San Jose from Ontario?
The flight distance from San Jose to Ontario 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 San Jose to Ontario?
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 San Jose to Ontario?
Roughly 62 kg CO2 per passenger one-way. That's about the same as driving 310 km.
Is the return flight from Ontario to San Jose 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 San Jose to Ontario?
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 Norman Y Mineta San Jose International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.