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$496+ Cheap flights from Ontario (ONT) to Java

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 3/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CGK
Dec 25 — Jan 11
Thu 12/25
Thu 1/1
1 adult, Economy
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Cheap flight deals from Ontario to Java

Keep the following information in mind while searching for Ontario to Java flight deals. Data was last updated November 25, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$812
(Delta)

One-way from

$496
(Delta)

Popular in

December

Cheapest in

September

Average price

$811
Provider with most accurate pricing for Los Angeles-Jakarta (JKT) flight deals.
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From Ontario to Java
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One-way flight from Ontario to Java
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Highest demand for flights based on searches. 6% potential increase in price ($68 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Ontario to Java

Cheapest flights from Ontario to Java
Explore the most affordable flight options available from Ontario to Java. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 25, 2025.

This oojo deal was found by Cheapflights users on 11/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/3010:50 pmONT - CGK
1 stop23h 50mChina Airlines
Sun 12/71:30 amCGK - ONT
1 stop30h 20mChina Airlines
Deal found 11/24$861
This Bravofly deal was found by Cheapflights users on 11/24. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/3010:50 pmONT - CGK
1 stop23h 50mChina Airlines
Thu 12/41:30 amCGK - ONT
1 stop30h 20mChina Airlines
Deal found 11/24$924
This oojo deal was found by Cheapflights users on 11/25. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:50 pmONT - CGK
1 stop23h 50mChina Airlines
Sun 1/181:30 amCGK - ONT
1 stop30h 20mChina Airlines
Deal found 11/25$1,026
This oojo deal was found by Cheapflights users on 11/25. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2710:50 pmONT - CGK
1 stop23h 50mChina Airlines
Tue 12/21:30 amCGK - ONT
1 stop30h 20mChina Airlines
Deal found 11/25$1,036
This oojo deal was found by Cheapflights users on 11/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/110:50 pmONT - CGK
1 stop23h 50mChina Airlines
Sun 12/141:30 amCGK - ONT
1 stop30h 20mChina Airlines
Deal found 11/24$1,051
This Trip.com deal was found by Cheapflights users on 11/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/3010:50 pmONT - CGK
1 stop23h 50mMultiple Airlines
Fri 12/512:25 pmCGK - ONT
1 stop18h 25mMultiple Airlines
Deal found 11/24$1,067
This oojo deal was found by Cheapflights users on 11/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:50 pmONT - CGK
1 stop23h 50mChina Airlines
Sun 1/111:30 amCGK - ONT
1 stop30h 20mChina Airlines
Deal found 11/24$1,096
This Korean Air deal was found by Cheapflights users on 11/25. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:45 amONT - CGK
2 stops46h 35mKorean Air
Wed 12/39:50 pmCGK - ONT
2 stops34h 18mKorean Air
Deal found 11/25$1,211
This United Airlines deal was found by Cheapflights users on 11/25. 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.
Tue 12/96:41 pmONT - CGK
2 stops44h 19mUnited Airlines
Sun 1/189:45 pmCGK - ONT
2 stops40h 08mUnited Airlines
Deal found 11/25$1,246
This oojo deal was found by Cheapflights users on 11/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2310:50 pmONT - CGK
1 stop34h 40mChina Airlines
Fri 12/261:30 amCGK - ONT
1 stop30h 20mChina Airlines
Deal found 11/24$1,349
This oojo deal was found by Cheapflights users on 11/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2310:50 pmONT - CGK
1 stop23h 50mChina Airlines
Sun 1/111:30 amCGK - ONT
1 stop30h 20mChina Airlines
Deal found 11/24$1,351
This oojo deal was found by Cheapflights users on 11/25. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:50 pmONT - SUB
2 stops29h 20mMultiple Airlines
Mon 1/197:05 amSUB - ONT
2 stops24h 45mMultiple Airlines
Deal found 11/25$1,453

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Java 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 November 25, 2025.
Use the filters below to find and compare flights from Ontario to Java that are best for you.

Fly from

Ontario

Fly to

Java

Route

Depart

Return

Price

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Tue 1/13

7:30 am-8:20 pm

2 stops45h 50m

Jakarta Soekarno-Hatta Intl

Mon 3/30

9:50 pm-11:54 pm

2 stops40h 04m

$812

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Thu 2/26

6:00 am-10:15 am

2 stops37h 15m

Jakarta Soekarno-Hatta Intl

Mon 3/2

9:45 pm-12:38 pm

2 stops29h 53m

$823

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Sat 3/14

6:00 am-8:20 pm

2 stops48h 20m

Jakarta Soekarno-Hatta Intl

Sun 4/5

9:50 pm-5:13 pm

2 stops33h 23m

$867

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Mon 1/19

6:00 am-8:20 pm

2 stops47h 20m

Jakarta Soekarno-Hatta Intl

Mon 3/30

9:50 pm-10:34 pm

2 stops38h 44m

$872

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Fri 1/16

10:50 pm-1:40 pm

1 stop23h 50m

Jakarta Soekarno-Hatta Intl

Mon 3/30

2:40 pm-6:00 pm

1 stop41h 20m

$883

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Tue 3/31

12:10 am-1:35 pm

1 stop23h 25m

Jakarta Soekarno-Hatta Intl

Sun 4/19

2:40 pm-6:00 pm

1 stop41h 20m

$892

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Mon 3/30

12:10 am-1:35 pm

1 stop23h 25m

Jakarta Soekarno-Hatta Intl

Thu 4/16

1:30 am-6:00 pm

1 stop30h 30m

$892

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Thu 2/26

10:50 pm-1:40 pm

1 stop23h 50m

Jakarta Soekarno-Hatta Intl

Sun 3/1

1:30 am-4:50 pm

1 stop30h 20m

$941

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Tue 1/13

10:50 pm-1:40 pm

1 stop23h 50m

Jakarta Soekarno-Hatta Intl

Sun 3/29

1:30 am-6:00 pm

1 stop30h 30m

$941

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Wed 1/14

10:50 pm-1:40 pm

1 stop23h 50m

Jakarta Soekarno-Hatta Intl

Sun 3/29

1:30 am-6:00 pm

1 stop30h 30m

$941

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

Showing 1-10 of 29 results
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Best time to book a flight from Ontario to Java

Have a flexible travel schedule? Discover the best time to fly to Java 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 Java

What is the cheapest month to book a flight from Ontario to Java?

Currently, November is the cheapest month in which you can book a flight from Ontario to Java (average of $584). Flying from Ontario to Java in June is currently the most expensive (average of $986). 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 FXH?

Find hourly flight availability from Ontario to Java. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 25, 2025.

When flying from Ontario to Java, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 10% versus a flight at noon.

Related info for your journey

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

  • What airport do you fly from for flights from Ontario to Java?

    If you book a flight to Java from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • How long is the flight from Ontario to Java?

    A quick flight from Ontario to Java can take about 37h 15m. Delta provides one of the quickest options available for as low as $823. Airlines will cover a distance of 9012 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Ontario to Java one-way?

    One-way options have recently been found by users for as low as $496 on Delta. Other airlines that offer cheap prices include China Airlines from $503 and Korean Air from $518 one-way.

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

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

  • How can I find direct flights from Ontario to Java?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Java 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 Java?

    Currently, November is the cheapest month in which you can book a flight from Ontario to Java (average of $584). Flying from Ontario to Java in June is currently the most expensive (average of $986). 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

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Top 3 airlines flying from Ontario to Java

Discover the top 3 airlines that operate flights from Ontario to Java. 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 November 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
STARLUX AirlinesCheapest$705Average$1,066FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$942Average$1,167FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$1,015Average$1,029FlexibilityNo cancel feeOn-time69%

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