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San José

$157+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJO
Apr 14 — Apr 211
Mon 4/14
Mon 4/21
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Ontario to San José Juan Santamaria Intl are usually found in May or October, booked 53 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 April 9, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(CheapOair)

One-way from

$157
(FlightHub)

Popular in

December

Cheapest in

May

Average price

$534
Provider with most accurate pricing for Ontario-San José Juan Santamaria Intl flight deals.
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Provider most trusted by Cheapflights users for Ontario-San José Juan Santamaria Intl flights.
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From Ontario to San José Juan Santamaria Intl
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One-way flight from Ontario to San José Juan Santamaria Intl
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Highest demand for flights based on searches. 9% potential increase in price ($54 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 9, 2025.

This CheapOair deal was found by Cheapflights users on 4/8. 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 4/281:09 amONT - SJO
1 stop21h 05mMultiple Airlines
Sat 5/33:31 pmSJO - ONT
1 stop8h 42mMultiple Airlines
Deal found 4/8$329
This American Airlines deal was found by Cheapflights users on 4/8. 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 9/1311:59 pmONT - SJO
1 stop16h 31mAmerican Airlines
Sun 9/217:35 amSJO - ONT
1 stop15h 21mAmerican Airlines
Deal found 4/8$385
This Priceline deal was found by Cheapflights users on 4/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2011:25 pmONT - SJO
1 stop10h 50mAvianca
Sat 5/245:05 amSJO - ONT
1 stop17h 50mAvianca
Deal found 4/8$410
This United Airlines deal was found by Cheapflights users on 4/8. 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 8/251:42 pmONT - SJO
1 stop16h 33mUnited Airlines
Fri 8/298:37 amSJO - ONT
1 stop10h 05mUnited Airlines
Deal found 4/8$452
This Delta deal was found by Cheapflights users on 4/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/107:00 amONT - SJO
1 stop13h 26mDelta
Mon 4/147:00 amSJO - ONT
1 stop13h 28mDelta
Deal found 4/8$675

Cheapflights Fare Finder

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 April 9, 2025.
Use the filters below to find and compare flights from Ontario to San José that are best for you.

Fly from

Ontario

Fly to

San José

Route

Depart

Return

Price

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Mon 4/28

1:09 am-11:14 pm

1 stop21h 05m

San José Juan Santamaria Intl

Sat 5/3

3:31 pm-11:13 pm

1 stop8h 42m

$329

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Sat 9/13

11:59 pm-5:30 pm

1 stop16h 31m

San José Juan Santamaria Intl

Sun 9/21

7:35 am-9:56 pm

1 stop15h 21m

$385

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Tue 5/20

11:25 pm-11:15 am

1 stop10h 50m

San José Juan Santamaria Intl

Sat 5/24

5:05 am-9:55 pm

1 stop17h 50m

$410

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Mon 8/25

1:42 pm-7:15 am

1 stop16h 33m

San José Juan Santamaria Intl

Fri 8/29

8:37 am-5:42 pm

1 stop10h 05m

$452

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Mon 7/7

5:05 pm-11:48 am

2 stops17h 43m

San José Juan Santamaria Intl

Fri 7/11

1:08 pm-10:29 pm

1 stop10h 21m

$740

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Tue 5/6

11:25 pm-11:15 am

1 stop10h 50m

$157

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Mon 6/9

1:09 am-11:14 pm

1 stop21h 05m

$160

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Thu 5/15

10:53 am-10:17 pm

1 stop10h 24m

$205

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Wed 4/23

1:20 pm-10:11 am

2 stops19h 51m

$226

OntarioSan José

ONT - SJO

ONTSJO

Ontario

Tue 6/24

12:49 pm-12:55 pm

2 stops23h 06m

$236

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/8

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 April.
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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to San José

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 April 4, 2025.

The best time to book flights from Ontario to San José, San José Province is 52 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 April 9, 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 April 9, 2025.
Read reviews from past customers who have flown Southwest, 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.
Southwest
8.0
Very good
4,281 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.1

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.0
Very good
4,281 reviews
Southwest
8.0
Very good
4,281 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.1

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,902 reviews
Southwest
8.0
Very good
4,281 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.1

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,633 reviews
Southwest
8.0
Very good
4,281 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.1

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
JetBlue
7.3
Good
2,923 reviews
Southwest
8.0
Very good
4,281 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.1

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,281 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.1

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 American Airlines is currently your cheapest option to San José, San José Province, with prices starting at $385. Additional round-trip tickets that might be worth considering are offered by Avianca and United Airlines, with the lowest prices starting at $410 and $452, respectively. You may be able to fly from Ontario to San José, San José Province for 27% 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 $157 on Avianca. Other airlines that offer cheap prices include American Airlines from $205 and United Airlines from $226 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
Alajuela
Monteverde
Jacó

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Top 4 airlines flying from Ontario to San José

Discover the top 4 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 April 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$314Average$454FlexibilityNo cancel feeOn-time71%
American AirlinesCheapest$442Average$582FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$488Average$677FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$616Average$698FlexibilityNo cancel feeOn-time63%

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