United States
USD

ONT - SJO

$253 Find Cheap Flights from Ontario to San José - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$579
Typical prices: $452-$629
Avianca
Sat 10/20Mon 10/29
ONT - SJO • 1 stop
Cheapest one-way
$253
Typical prices: $228-$339
American Airlines
Fri 10/26
ONT - SJO • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Ontario and San José. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
December
Cheapest • 24% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Dallas/Fort Worth (DFW)
Cheapest • Avg $539 (round-trip)
San Salvador El Salvador Intl (SAL)
Shortest trip • 8h 46m (one-way)
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San José!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to San José (ONT-SJO)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to San José

Tue, Oct 20 - Thu, Oct 29
Avianca Logo
11:35 pm - 8:45 amONT  Ontario-SJO San José Juan Santamaria Intl
8h 10m1 stop San Salvador El Salvador Intl
Avianca Logo
3:10 pm - 9:50 pmSJO  San José Juan Santamaria Intl-ONT Ontario
7h 40m1 stop San Salvador El Salvador Intl
$579Avianca
Tue, Nov 3 - Tue, Nov 10
Avianca Logo
10:45 pm - 8:50 amONT  Ontario-SJO San José Juan Santamaria Intl
8h 05m1 stop San Salvador El Salvador Intl
Avianca Logo
9:45 am - 8:50 pmSJO  San José Juan Santamaria Intl-ONT Ontario
13h 05m1 stop San Salvador El Salvador Intl
$579Avianca
Mon, Nov 16 - Mon, Nov 23
Southwest Logo
5:00 pm - 12:20 pmONT  Ontario-SJO San José Juan Santamaria Intl
17h 20m2 stops Las Vegas Harry Reid Intl Houston Hobby
Southwest Logo
1:20 pm - 8:50 amSJO  San José Juan Santamaria Intl-ONT Ontario
21h 30m2 stops Orlando Las Vegas Harry Reid Intl
$579Southwest
Sat, Oct 24 - Thu, Oct 29
Avianca Logo
11:35 pm - 8:50 amONT  Ontario-SJO San José Juan Santamaria Intl
8h 15m1 stop San Salvador El Salvador Intl
Avianca Logo
9:45 am - 9:50 pmSJO  San José Juan Santamaria Intl-ONT Ontario
13h 05m1 stop San Salvador El Salvador Intl
$579Avianca
Mon, Nov 30 - Fri, Dec 11
American Airlines Logo
11:59 pm - 1:46 pmONT  Ontario-SJO San José Juan Santamaria Intl
11h 47m1 stop Dallas/Fort Worth
American Airlines Logo
1:42 pm - 10:53 pmSJO  San José Juan Santamaria Intl-ONT Ontario
11h 11m1 stop Charlotte Douglas
$601American Airlines
Mon, Nov 30 - Fri, Dec 11
American Airlines Logo
11:59 pm - 1:46 pmONT  Ontario-SJO San José Juan Santamaria Intl
11h 47m1 stop Dallas/Fort Worth
American Airlines Logo
2:00 pm - 9:42 amSJO  San José Juan Santamaria Intl-ONT Ontario
21h 42m2 stops Miami Dallas/Fort Worth
$605American Airlines
Thu, Nov 26 - Thu, Dec 3
Multiple Airlines Logo
6:37 pm - 12:06 pmONT  Ontario-SJO San José Juan Santamaria Intl
15h 29m2 stops Guadalajara Miguel Hidal Mexico City Benito Juarez
Multiple Airlines Logo
4:15 pm - 11:58 pmSJO  San José Juan Santamaria Intl-ONT Ontario
9h 43m1 stop Guadalajara Miguel Hidal
$622Multiple Airlines
Fri, Jan 29 - Sat, Feb 6
United Airlines Logo
5:00 am - 8:39 pmONT  Ontario-SJO San José Juan Santamaria Intl
13h 39m2 stops Denver Intl Houston George Bush Intcntl
United Airlines Logo
2:25 pm - 10:15 pmSJO  San José Juan Santamaria Intl-ONT Ontario
9h 50m1 stop Houston George Bush Intcntl
$651United Airlines
Fri, Jan 29 - Sat, Feb 6
United Airlines Logo
6:37 pm - 8:32 amONT  Ontario-SJO San José Juan Santamaria Intl
11h 55m1 stop San Francisco
United Airlines Logo
2:25 pm - 10:15 pmSJO  San José Juan Santamaria Intl-ONT Ontario
9h 50m1 stop Houston George Bush Intcntl
$651United Airlines
Sun, Nov 15 - Thu, Dec 3
Delta Logo
7:05 am - 10:15 pmONT  Ontario-SJO San José Juan Santamaria Intl
13h 10m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:00 am - 9:55 pmSJO  San José Juan Santamaria Intl-ONT Ontario
16h 55m1 stop Atlanta Hartsfield-Jackson
$659Delta
Booking Insights

Price, demand and travel trends for Ontario to San José flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Ontario to San José?

Round-trip flights from Ontario to San José typically range from $452 to $629. The lowest price found in the past 5 days was $579, on Avianca.

What's the cheapest day of the week to fly from Ontario to San José?

Based on deals KAYAK users found in the last 12 months, Monday is the cheapest day of the week to fly from Ontario to San José. It’s 24% cheaper than the average day, while Sunday is the most expensive, with prices 22% higher.

What’s the cheapest month to fly from Ontario to San José?

•December is the cheapest month to fly from Ontario to San José at $390 round-trip.
•September ($668) and June ($575) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 71% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for Ontario to San José flights

Low season

July

Cheapest flight

$253
Beat the crowds with an average 61% drop in travelers.
The most popular month to fly with an average 30% increase in travelers.
One-way flight from Ontario to San José

When to book flights from Ontario to San José

Are your dates flexible? Find out the best times to travel from Ontario to San José based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Ontario to San José flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Ontario to San José?

    Only Economy Class is available on flights from Ontario to San José.

  • How long is a flight from Ontario to San José?

    A nonstop flight from Ontario to San José takes 00m, covering 2,685 miles.

  • Do I need a passport to fly from Ontario to San José?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Ontario to San José flight?

    Round-trip flights from Ontario to San José range from $452 to $629, with an average of $516 over the past 12 months. Anything below $452 counts as a good deal.

  • Have flight prices from Ontario to San José changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $579 to $5,556. That means the highest observed fare was about 10x higher than the lowest one.

  • How are flight prices from Ontario to San José looking right now?

    One-way fares from Ontario to San José are currently higher than usual. Average one-way flight prices are about $330, which is 23% above the typical average for this route.

  • What car rental options are available at San José Juan Santamaria Intl Airport (SJO)?

    San José Juan Santamaria Intl Airport (SJO) hosts 5 major car rental companies, with daily rates starting from around $1 for economy cars. Top options include:

    • Budget
    • Avis
    • Priceless
    • Routes Car & Truck Rentals
    • Payless

  • Which airports can I use when flying from Ontario to San José?

    Flights from Ontario to San José usually depart from Ontario (ONT) and arrive at San José Juan Santamaria Intl (SJO).

  • Which airports do connecting flights from Ontario to San José pass through?

    One-stop flights from Ontario to San José most commonly connect through:

    • Dallas/Fort Worth (DFW) - 30% of one-stop connections
    • San Salvador El Salvador Intl (SAL) - 26% of one-stop connections
    • Houston George Bush Intcntl (IAH) - 21% of one-stop connections
    • San Francisco (SFO) - 21% of one-stop connections

  • Can I save money by using flexible dates for flights from Ontario to San José?

    Yes. Flexible dates can save you up to 38% on flights from Ontario to San José. Monday is the cheapest departure day at $393 round-trip on average, while Sunday is the most expensive at $632, a difference of $239.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Ontario to San José?

    Flying via San Salvador El Salvador Intl (SAL) gives the shortest average 1-stop total travel time at 8h 46m, compared with 8h 57m via Houston Hobby (HOU) and 10h 45m via Dallas/Fort Worth (DFW).

  • What is the time difference between Ontario and San José?

    San José is 1 hour ahead of Ontario (Central Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in San José?

    Some of the most popular sights in San José are Parque Metropolitano La Sabana, Estadio Nacional de Costa Rica and Museo de Oro. These are among the most viewed places in San José on KAYAK.

Your guide to booking Ontario to San José flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure and avoid flying on Sunday. On this route, Monday flights average $393, about $239 less than Sunday fares (38% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Ontario to San José trip for December. Fares historically average $390 round-trip in that month - typically $278 less than the most expensive month, which is September (based on the last 12 months).

More options for your flight from Ontario to San José

Complete your trip to San José with a hotel stay or car rental

Car rentals in San José
Hotels in San José
Vacations in San José