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SJO - ONT

Find cheap flights from San José to Ontario from $173

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San José to Ontario departing on 4/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 4/27
Sat 5/4

Search hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San José to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San José to Ontario, as well as popular online travel agencies
In the last 7 days travelers have searched 46,342,885 times on KAYAK, and here is why:

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Cheap flight deals from San José to Ontario

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San José to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
9:21 am - 10:09 pmSJO-ONT
37h 48m2 stops
12:59 am - 8:11 amONT-SJO
30h 12m2 stops
$277Frontier
Find Deal
Thu, Apr 18 - Tue, Apr 23
9:35 am - 10:00 pmSJO-ONT
13h 25m1 stop
11:30 pm - 8:40 amONT-SJO
8h 10m1 stop
$346Avianca
Find Deal
Thu, Apr 25 - Mon, Apr 29
9:35 am - 10:00 pmSJO-ONT
13h 25m1 stop
11:30 pm - 8:40 amONT-SJO
8h 10m1 stop
$352Avianca
Find Deal
Tue, Apr 30 - Mon, May 6
9:36 am - 7:08 amSJO-ONT
22h 32m2 stops
11:30 pm - 11:25 amONT-SJO
10h 55m1 stop
Wed, Apr 17 - Tue, Apr 23
5:10 am - 10:00 pmSJO-ONT
17h 50m1 stop
11:30 pm - 11:25 amONT-SJO
10h 55m1 stop
$356Avianca
Find Deal
Sun, May 19 - Sat, May 25
6:00 am - 11:57 pmSJO-ONT
18h 57m1 stop
7:43 am - 10:29 pmONT-SJO
13h 46m1 stop
$361American Airlines
Find Deal
Thu, Apr 18 - Tue, Apr 23
6:20 am - 11:57 pmSJO-ONT
18h 37m2 stops
11:59 pm - 6:55 pmONT-SJO
17h 56m2 stops
$366American Airlines
Find Deal
Wed, Apr 17 - Mon, Apr 22
11:05 am - 11:04 pmSJO-ONT
36h 59m2 stops
6:00 am - 7:37 pmONT-SJO
12h 37m2 stops
$371United Airlines
Find Deal
Wed, Apr 17 - Tue, Apr 23
7:55 am - 10:02 amSJO-ONT
27h 07m2 stops
1:36 pm - 10:03 amONT-SJO
19h 27m2 stops
$395United Airlines
Find Deal
Tue, Apr 16 - Sat, Apr 27
1:17 pm - 10:57 pmSJO-ONT
10h 40m1 stop
10:00 pm - 11:52 amONT-SJO
12h 52m1 stop
$487Delta
Find Deal
Fri, Apr 19 - Sun, Apr 21

Flights from San José to Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights from San José to Ontario to help you find the cheapest flights, the best time to fly and much more.

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

The average price of all flights from San José, San José Province to Ontario clicked on KAYAK for each day over the last 12 months.
When flying from San José to Ontario, you should consider leaving on a Monday and avoid Sundays if you are looking for the best rates. For your return to San José, you’ll find the best rates on Saturdays and the most expensive ones on Fridays.

What is the cheapest month to fly from San José, San José Province to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from San José, San José Province to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from San José, San José Province to Ontario is October, where tickets cost $378 on average. On the other hand, the most expensive months are February and April, where the average cost of tickets is $884 and $780 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from San José, San José Province to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from San José, San José Province to Ontario, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 41 days before departure.

Which airlines provide the cheapest flights from San José to Ontario?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Avianca offered the best one-way deal for that route, at $200. KAYAK users also found San José to Ontario round-trip flights on Frontier from $277 and on Avianca from $346.

How long does a flight from San José to Ontario take?

Flying between Ontario and San José will take minimum 9h 30m and will require at least one stop.

Good to know

Low season

April

High season

August

Cheapest flight

$173
Best time to beat the crowds but there is an average 37% increase in price.
Most popular time to fly and prices are also 26% lower on average.
Flight from San José to Ontario

When to book flights from San José to Ontario

Are your dates flexible? Find out the best times to travel from San José to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San José to Ontario

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

    In the last 3 days, the lowest price for a flight from San José, San José Province to Ontario was $173 for a one-way ticket and $277 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in San José and on arrival in Ontario.

  • Which airports will I be using when flying from San José to Ontario?

    San José airport is called San José Juan Santamaria Intl and the only airport in Ontario is Ontario.

  • Which aircraft models fly most regularly from San José to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San José to Ontario?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between San José and Ontario, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from San José to Ontario, Avianca or American Airlines?

    The two airlines most popular with KAYAK users for flights from San José to Ontario are Avianca and American Airlines. With an average price for the route of $406 and an overall rating of 7.5, Avianca is the most popular choice. American Airlines is also a great choice for the route, with an average price of $340 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from San José to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San José to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San José to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from San José is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San José to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to San José with another airline. Booking your flights between San José and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San José to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from San José up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from San José to Ontario

Need help choosing which airline to fly with from San José to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to KAYAK reviews.
7.5
AviancaOverall score based on 4106 reviews
80crew
70entertainment
76overall
75comfort
78boarding
65food
Airline reviews

Seat space was terrible no food on a six hour flight

Read more about Avianca

Seat space was terrible no food on a six hour flight

There was no bag included in the reservation. The price was double. Not properly advertised

There is no food. There is no in-inflight entertainment. The seats are cardboard. The airline is a living hellscape.

They could offer free food and drink like other international flights.

Flight attendants to show up on time, offer drinks and food.

The worst airline, the crew so mean and rude, everything was a nightmare, if I start to write, I'll never end

Pros: "Comfortable flight good crew"
Cons: "The boarding process could use help, to chaotic at times but some of the has to do with the countries policies. But I’d give it a B+"
Cons: "We were not allowed to check my bag in line 2 hours early. Time listed on e boarding pass was at gate but we were in line 2 hours early and not alerted to get put ahead in lines. Misleading us and 3 others we knew of to not allowed to check bags or go to gate. Had to rebook next available 1 1/2 days later."
Pros: "Buenos protocolos COVID"
Cons: "En la reservación de kayak no aparece el código de reserva de vuelo de cada aerolínea. Para encontrarlo hay que buscar en la página help.kayak. Al no tener ese código disponible a la mano lo se puede hacer check in. Estuve llamando al Contacto Center de Avianca y el servicio fue muy deficiente."
Pros: "But this time everything was organized"
Cons: "Put the same way that’s its right now each get out by groups"

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

The staff were very helpful with lots of refreshments on offer. The toilets were clean. The seats were comfortable and entertainment was good. No complaints, it was excellent.

amazing! they were so kind and allowed us to sit on empty seats so we could stretch our legs and sleep good. Food is amazing as well plus dessert in the middle of the flight!

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

American Airlines canceled the flight twice and was unable to facilitate a change of city for us after our travel plans became affected. We lost alot of money due to this and it seems like the airline was trying their best not to facilitate this. Mind you, I am a very loyal member.

Plane felt so crowded and tightly packed. The chair itself was not comfortable.

They attended to my needs as I couldn't walk and they provided a wheelchair for me.q

Flight was canceled and then rescheduled on another flight. Paid for first class but moved to the back of the plane. Then put up in the worst/dirtiest hotel I’ve ever stayed in. American Airlines should be ashamed of putting their passengers/customers in a place that filthy.

Book cheap flights from San José to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from San José to Ontario found on KAYAK in the last 72 hours.
4/27Sat
2 stops
21h 55mSJO-ONT
$173
4/27Sat
2 stops
21h 55mSJO-ONT
$174
4/29Mon
1 stopAvianca
13h 25mSJO-ONT
$200
4/25Thu
1 stopAvianca
13h 25mSJO-ONT
$201
5/22Wed
1 stopUnited Airlines
14h 39mSJO-ONT
$289
4/17Wed
2 stopsCopa Airlines
19h 49mSJO-ONT
$302
4/18Thu
2 stopsCopa Airlines
29h 50mSJO-ONT
$362
5/22Wed
2 stopsAmerican Airlines
13h 33mSJO-ONT
$364
6/18Tue
2 stopsAmerican Airlines
24h 34mSJO-ONT
$368
4/23Tue
2 stopsUnited Airlines
16h 09mSJO-ONT
$374

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Last minute flights from San José to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from San José to Ontario that are departing in the next 10 days.
3/29Fri
multi-stopUnited Airlines
15h 16mSJO-ONT
4/5Fri
multi-stopUnited Airlines
15h 00mONT-SJO
$586
3/30Sat
multi-stopUnited Airlines
15h 22mSJO-ONT
4/6Sat
multi-stopUnited Airlines
15h 00mONT-SJO
$629
3/30Sat
multi-stopUnited Airlines
14h 12mSJO-ONT
4/6Sat
multi-stopUnited Airlines
15h 00mONT-SJO
$633
4/2Tue
multi-stopUnited Airlines
21h 32mSJO-ONT
4/8Mon
multi-stopUnited Airlines
19h 27mONT-SJO
$660
3/29Fri
multi-stopUnited Airlines
18h 30mSJO-ONT
4/6Sat
multi-stopUnited Airlines
15h 00mONT-SJO
$702
3/29Fri
multi-stopAmerican Airlines
14h 01mSJO-ONT
4/9Tue
multi-stopAmerican Airlines
8h 36mONT-SJO
$740
3/31Sun
multi-stopAmerican Airlines
14h 01mSJO-ONT
4/2Tue
multi-stopAmerican Airlines
10h 35mONT-SJO
$799
4/2Tue
multi-stopAvianca
9h 30mSJO-ONT
4/7Sun
multi-stopAvianca
8h 10mONT-SJO
$853
4/1Mon
multi-stopAvianca
13h 25mSJO-ONT
4/2Tue
multi-stopAvianca
13h 05mONT-SJO
$903
3/30Sat
multi-stop
9h 35mSJO-ONT
4/5Fri
multi-stop
13h 57mONT-SJO
$1,326

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San José - Ontario Flights

Departure:

San José (SJO)Costa Rica

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - San José

Cabin classes: