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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
$557
Southwest Airlines
• 2 stops
• 20h 20m
Oct 17 – Oct 25
The cheapest round trip flight from Ontario to San Jose (ONT-SJO-ONT) is currently $557
Fastest Flight
17h 35m
The fastest nonstop flight from Ontario to San Jose (ONT-SJO) takes 17h 35m
Top Airlines Flying from Ontario to San Jose
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.
Oct 17 - Oct 25, Economy
Ontario → San Jose
20h 20m
6:20 AM - 7:40 PM • 2 stops
Ontario → San Jose
30h 25m
1:35 PM - 7:00 AM • 1 stop
Southwest Airlines
Oct 17 - Oct 25, Economy
Ontario → San Jose
21h 50m
5:30 AM - 7:40 PM • 2 stops
Ontario → San Jose
30h 25m
1:35 PM - 7:00 AM • 1 stop
Southwest Airlines
Oct 17 - Oct 25, Economy
Ontario → San Jose
20h 37m
6:00 AM - 7:37 PM • 1 stop
Ontario → San Jose
15h 16m
1:25 PM - 9:41 PM • 1 stop
United Airlines
Oct 17 - Oct 25, Economy
Ontario → San Jose
21h 41m
11:59 PM - 2:00 PM • 1 stop
Ontario → San Jose
17h 15m
3:01 PM - 12:36 AM • 1 stop
American Airlines
Oct 17 - Oct 25, Economy
Ontario → San Jose
17h 35m
11:35 PM - 11:30 AM • 1 stop
Ontario → San Jose
13h 45m
5:45 AM - 1:10 PM • 1 stop
Avianca
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 5:30 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 AA : USD 759
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 11:59 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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