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Uncover the best deals on Ontario to San Jose flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest ONT - SJO Flights
Useful information for finding best airline tickets from Ontario International to Juan Santamaria International on your next trip.
Cheapest Round Trip Flight
$91
Southwest Airlines
• 2 stops
• 29h 10m
Sep 13 – Sep 17
The cheapest round trip flight from Ontario to San Jose (ONT-SJO-ONT) is currently $91
Fastest Flight
16h 50m
The fastest nonstop flight from Ontario to San Jose (ONT-SJO) takes 16h 50m
Latest Flight Deals from Ontario (ONT) to San Jose (SJO)
Compare and book low fare round-trip air tickets from Ontario to San Jose. Ideal for travelers with confirmed return itineraries.
Sep 13 - Sep 17, Economy
Ontario → San Jose
29h 10m
5:55 PM - 12:45 PM • 2 stops
Ontario → San Jose
20h 45m
9:00 AM - 8:45 PM • 2 stops
Southwest Airlines
Sep 13 - Sep 17, Economy
Ontario → San Jose
25h 15m
8:30 PM - 12:45 PM • 2 stops
Ontario → San Jose
20h 45m
9:00 AM - 8:45 PM • 2 stops
Southwest Airlines
Sep 13 - Sep 17, Economy
Ontario → San Jose
25h 35m
8:10 PM - 12:45 PM • 2 stops
Ontario → San Jose
23h 35m
9:00 AM - 10:15 PM • 2 stops
Southwest Airlines
Sep 13 - Sep 17, Economy
Ontario → San Jose
20h 54m
10:00 PM - 11:54 AM • 1 stop
Ontario → San Jose
20h 7m
1:19 PM - 12:26 AM • 1 stop
Delta Airlines
Sep 26 - Sep 27, Economy
Ontario → San Jose
16h 50m
6:55 AM - 6:05 PM • 2 stops
Ontario → San Jose
19h 5m
12:35 PM - 11:20 PM • 1 stop
Southwest Airlines
FAQs on Ontario to San Jose Flights
What are the airports in Ontario?
ONT
What’s the most popular airline flying from ONT to SJO?
The most popular airline flying from Ontario to San Jose are
Can I fly from ONT to SJO non-stop?
NO
Which airlines fly nonstop between Ontario and San Jose?
The non-stop flights between Ontario and San Jose are .
What’s the earliest departure time from ONT to SJO Airport?
The earliest flight leaves ONT at 6:55 am and lands in SJO - Juan Santamaria International
What are the airports in San Jose?
SJO
Can I make changes to my Ontario to San Jose flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from ONT to SJO?
Read the fare rules of the Ontario to San Jose air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Ontario and San Jose?
operate flights between Ontario and San Jose
How long does a flight from Ontario to San Jose take?
It takes approximately 6 hour to fly non-stop from ONT to SJO, which is 2685.15 miles by air.
Which airlines provide the cheapest flights from Ontario (ONT) to San Jose (SJO) ?
In the past couple of days, the cheapest tickets to SJO from ONT were found on UA : USD 252
Do I need a passport to fly between ONT and SJO?
Yes
What’s the latest departure time from ONT to SJO ?
The last flight leaves ONT at 10:00 pm
Ontario (ONT) to San Jose (SJO): Airport Information
| Origin Airport | Ontario International , Ontario, US |
| Destination Airport | Juan Santamaria International , San Jose, CR |
| Distance | 2685 miles |
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