HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San José

$126+ Cheap flights from Ontario (ONT) to San José (SJO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJO
Mar 13 — Mar 201
Thu 3/13
Thu 3/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to San José with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Ontario to San José Juan Santamaria Intl are usually found in May or October, booked 10 days in advance, depart on a Monday or Saturday and return on a Tuesday

Cheap flight deals from Ontario to San José

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to San José (SJO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 8, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$264
(CheapOair)

One-way from

$126
(Gotogate)

Popular in

February

Cheapest in

May

Average price

$611
Provider with most accurate pricing for Ontario-San José Juan Santamaria Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-San José Juan Santamaria Intl flights.
Search Deals
From Ontario to San José Juan Santamaria Intl
Search Deals
One-way flight from Ontario to San José Juan Santamaria Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($73 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Ontario to San José

Cheapest flights from Ontario to San José
Explore the most affordable flight options available from Ontario to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 8, 2025.

This CheapOair deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/241:09 amONT - SJO
1 stop21h 02mMultiple Airlines
Tue 4/83:31 pmSJO - ONT
1 stop8h 42mMultiple Airlines
Deal found 3/5$264
This Cheapflightsfares deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2911:25 pmONT - SJO
1 stop13h 05mAvianca
Sat 6/79:35 amSJO - ONT
1 stop13h 20mAvianca
Deal found 3/7$430
This American Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1712:46 pmONT - SJO
1 stop8h 38mAmerican Airlines
Sat 5/2411:59 pmSJO - ONT
1 stop14h 55mAmerican Airlines
Deal found 3/5$451
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/306:43 pmONT - SJO
1 stop11h 32mUnited Airlines
Fri 7/45:30 amSJO - ONT
1 stop16h 52mUnited Airlines
Deal found 3/6$485

Find flights from Ontario to San José within your budget

Customize your flight search to find flights from Ontario to San José that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 8, 2025.

Fly from

Ontario

Fly to

San José

Route

Depart

Return

Price

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Mon 3/24

1:09 am-11:11 pm

1 stop21h 02m

San José Juan Santamaria Intl

Tue 4/8

3:31 pm-11:13 pm

1 stop8h 42m

$264

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Thu 5/29

11:25 pm-1:30 pm

1 stop13h 05m

San José Juan Santamaria Intl

Sat 6/7

9:35 am-9:55 pm

1 stop13h 20m

$430

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Sat 5/17

12:46 pm-10:24 pm

1 stop8h 38m

San José Juan Santamaria Intl

Sat 5/24

11:59 pm-1:54 pm

1 stop14h 55m

$451

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Mon 6/30

6:43 pm-7:15 am

1 stop11h 32m

San José Juan Santamaria Intl

Fri 7/4

5:30 am-9:22 pm

1 stop16h 52m

$485

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Wed 4/9

6:00 am-12:12 am

2 stops17h 12m

San José Juan Santamaria Intl

Tue 4/22

1:12 am-8:29 pm

2 stops20h 17m

$726

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Mon 4/7

1:09 am-11:14 pm

1 stop21h 05m

$126

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Sat 4/26

11:25 pm-11:15 am

1 stop10h 50m

$206

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Tue 3/25

6:00 am-9:59 pm

1 stop14h 59m

$214

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Sun 5/11

10:40 pm-1:05 pm

1 stop13h 25m

$217

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Tue 3/18

6:00 am-8:55 pm

1 stop13h 55m

$254

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

Showing 1-10 of 13 results
1
2

Compare providers for flights from Ontario to San José

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to San José in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-San José, San José Province flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-San José, San José Province flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-San José, San José Province flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-San José, San José Province flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-San José, San José Province flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to San José

Have a flexible travel schedule? Discover the best time to fly to San José from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Ontario to San José

Get recent, data-driven insights about flights from Ontario to San José including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Ontario to San José, San José Province?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to San José. Price data was last updated on February 28, 2025.

The best time to book flights from Ontario to San José, San José Province is 9 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Ontario to San José, San José Province?

Currently, September is the cheapest month in which you can book a flight from Ontario to San José, San José Province (average of $398). Flying from Ontario to San José, San José Province in March is currently the most expensive (average of $555). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to SJO?

Find hourly flight availability from Ontario to San José. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 8, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to San José, San José Province in the afternoon. If you’re flexible enough to do this you can expect to save up to 30% on your trip compared to booking a flight in the morning.

Rainfall in San José by month

Plan your trip to San José by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San José, San José Province ranges from 0.0 - 11.8 inches per month. September is typically the wettest month, when rainfall can reach 11.8 in. February is typically the driest time to visit San José, San José Province when rainfall is around 0.0 in.

Temperature in San José by month

Plan your trip to San José by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San José, San José Province, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 64.4 F).

Reviews of airlines servicing San José

Get insights into the airlines that provide service to San José. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San José. Reviews last updated March 8, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and United Airlines from Ontario to San José. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,716 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,716 reviews
Alaska Airlines
8.0
Very good
9,716 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,024 reviews
Alaska Airlines
8.0
Very good
9,716 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,649 reviews
Alaska Airlines
8.0
Very good
9,716 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

JetBlue
7.3
Good
2,986 reviews
Alaska Airlines
8.0
Very good
9,716 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,716 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Ontario to San José. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Ontario to San José, San José Province round-trip?

    Flying on Avianca is currently your cheapest option to San José, San José Province, with prices starting at $430. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $451 and $485, respectively. You may be able to fly from Ontario to San José, San José Province for 20% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Ontario to San José, San José Province one-way?

    One-way options have recently been found by users for as low as $206 on Avianca. Other airlines that offer cheap prices include American Airlines from $214 and JetBlue from $217 one-way.

  • Can I find deals for flights from Ontario to San José that include hotel bookings?

    Yes. In addition to deals on Ontario to San José flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to San José?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to San José.

  • Can I find deals for business class flights from Ontario to San José?

    Yes. Cheapflights offers flight deals from Ontario to San José by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to San José, San José Province?

    Currently, September is the cheapest month in which you can book a flight from Ontario to San José, San José Province (average of $398). Flying from Ontario to San José, San José Province in March is currently the most expensive (average of $555). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Manuel Antonio
Heredia
Jacó
Alajuela
Monteverde

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to San José

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to San José flights
San Francisco to San José flights
Los Angeles to Liberia flights
San Francisco to Liberia flights
Oakland to San José flights
Burbank to San José flights
Ontario to Liberia flights
San Diego to San José flights
Santa Ana to San José flights
San Jose to San José flights
Sacramento to Liberia flights
Las Vegas to San José flights
San Diego to Liberia flights
Sacramento to San José flights
Las Vegas to Liberia flights
San Jose to Liberia flights
Reno to San José flights
Oakland to Liberia flights
Reno to Liberia flights
Santa Ana to Liberia flights
San Luis Obispo to San José flights
Santa Rosa to San José flights
Palm Springs to San José flights
Santa Rosa to Liberia flights
Burbank to Liberia flights
Monterey to Liberia flights
Medford to San José flights
Fresno to San José flights
Tijuana to San José flights
Monterey to San José flights
Medford to Liberia flights
Long Beach to Liberia flights
Palm Springs to Liberia flights
Long Beach to San José flights
Redding to Liberia flights
Arcata to Liberia flights
Fresno to Liberia flights
Yuma to San José flights

Top 3 airlines flying from Ontario to San José

Discover the top 3 airlines that operate flights from Ontario to San José. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$314Average$465FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$378Average$754FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$442Average$592FlexibilityNo cancel feeOn-time71%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.