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$368+ 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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CGK
Nov 9 — Nov 161
Sun 11/9
Sun 11/16
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 October 10, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$705
(Korean Air)

One-way from

$368
(Delta)

Popular in

June

Cheapest in

September

Average price

$790
Provider with most accurate pricing for Los Angeles-Jakarta (JKT) flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Jakarta (JKT) flights.
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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. 15% potential increase in price ($176 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 10, 2025.

This Korean Air deal was found by Cheapflights users on 10/6. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:35 amONT - CGK
2 stops46h 45mKorean Air
Thu 11/69:50 pmCGK - ONT
2 stops34h 20mKorean Air
Deal found 10/6$705
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/277:35 amONT - CGK
2 stops46h 45mKorean Air
Wed 11/269:50 pmCGK - ONT
2 stops35h 28mKorean Air
Deal found 10/8$762
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/277:35 amONT - CGK
2 stops46h 45mKorean Air
Mon 12/19:50 pmCGK - ONT
2 stops34h 18mKorean Air
Deal found 10/8$772
This Delta deal was found by Cheapflights users on 10/8. 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.
Sat 11/13:45 pmONT - CGK
2 stops62h 35mDelta
Wed 12/39:50 pmCGK - ONT
2 stops39h 57mDelta
Deal found 10/8$773
This Korean Air deal was found by Cheapflights users on 10/6. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:35 amONT - CGK
2 stops46h 45mKorean Air
Sat 11/89:50 pmCGK - ONT
2 stops40h 05mKorean Air
Deal found 10/6$808
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/277:35 amONT - CGK
2 stops46h 45mKorean Air
Thu 11/2711:30 pmCGK - ONT
2 stops33h 48mKorean Air
Deal found 10/8$822
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:45 amONT - CGK
2 stops46h 35mKorean Air
Wed 11/269:50 pmCGK - ONT
2 stops35h 28mKorean Air
Deal found 10/8$829
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:45 amONT - CGK
2 stops46h 35mKorean Air
Mon 12/19:50 pmCGK - ONT
2 stops39h 57mKorean Air
Deal found 10/8$839
This Korean Air deal was found by Cheapflights users on 10/7. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:00 amONT - CGK
2 stops47h 20mMultiple Airlines
Tue 11/259:50 pmCGK - ONT
2 stops34h 19mMultiple Airlines
Deal found 10/7$872
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:45 amONT - CGK
2 stops46h 35mKorean Air
Thu 11/2711:30 pmCGK - ONT
2 stops33h 48mKorean Air
Deal found 10/8$889
This oojo deal was found by Cheapflights users on 10/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2112:10 amONT - CGK
1 stop23h 25mChina Airlines
Tue 11/41:30 amCGK - ONT
1 stop30h 20mChina Airlines
Deal found 10/8$899
This oojo deal was found by Cheapflights users on 10/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/610:50 pmONT - CGK
1 stop23h 50mChina Airlines
Sun 11/231:30 amCGK - ONT
1 stop30h 20mChina Airlines
Deal found 10/8$911

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 October 10, 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

Fri 3/13

6:45 am-8:20 pm

2 stops47h 35m

Jakarta Soekarno-Hatta Intl

Fri 4/24

9:50 pm-5:16 pm

2 stops33h 26m

$705

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Tue 10/28

7:35 am-8:20 pm

2 stops46h 45m

Jakarta Soekarno-Hatta Intl

Tue 11/4

9:50 pm-5:10 pm

2 stops34h 20m

$705

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Tue 10/28

7:35 am-8:20 pm

2 stops46h 45m

Jakarta Soekarno-Hatta Intl

Wed 11/5

9:50 pm-5:10 pm

2 stops34h 20m

$705

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Sat 3/14

6:45 am-8:20 pm

2 stops47h 35m

Jakarta Soekarno-Hatta Intl

Sun 4/26

9:50 pm-10:40 pm

2 stops38h 50m

$705

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Mon 2/9

6:45 am-8:20 pm

2 stops46h 35m

Jakarta Soekarno-Hatta Intl

Mon 2/23

9:50 pm-3:20 pm

2 stops32h 30m

$705

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Mon 10/27

7:35 am-8:20 pm

2 stops46h 45m

Jakarta Soekarno-Hatta Intl

Tue 12/2

9:50 pm-5:08 pm

2 stops34h 18m

$705

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Tue 10/21

7:35 am-8:10 pm

2 stops46h 35m

Jakarta Soekarno-Hatta Intl

Tue 10/28

9:50 pm-5:10 pm

2 stops33h 20m

$705

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Wed 3/11

6:45 am-8:20 pm

2 stops47h 35m

Jakarta Soekarno-Hatta Intl

Thu 3/26

9:50 pm-5:15 pm

2 stops33h 25m

$705

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Tue 10/28

7:35 am-8:20 pm

2 stops46h 45m

Jakarta Soekarno-Hatta Intl

Sun 11/9

9:50 pm-10:55 pm

2 stops40h 05m

$762

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Mon 10/27

7:35 am-8:20 pm

2 stops46h 45m

Jakarta Soekarno-Hatta Intl

Wed 11/26

9:50 pm-6:18 pm

2 stops35h 28m

$762

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/7

Showing 1-10 of 34 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, August is the cheapest month in which you can book a flight from Ontario to Java (average of $592). Flying from Ontario to Java in June is currently the most expensive (average of $980). 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 October 10, 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 29h 20m. Korean Air provides one of the quickest options available for as low as $1,327. Airlines will cover a distance of 8739 mi. This flight may include one or multiple stops.

  • 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, August is the cheapest month in which you can book a flight from Ontario to Java (average of $592). Flying from Ontario to Java in June is currently the most expensive (average of $980). 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 October 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
STARLUX AirlinesCheapest$812Average$1,066FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$933Average$1,040FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$1,015Average$1,029FlexibilityNo cancel feeOn-time69%

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