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$428+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CGK
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$900
(oojo)

One-way from

$610
(United Airlines)

Popular in

June

Cheapest in

September

Average price

$1,145
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. 16% potential increase in price ($194 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Korean Air deal was found by Cheapflights users on 4/28. 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.
Wed 11/267:00 amONT - CGK
2 stops46h 15mKorean Air
Wed 12/179:50 pmCGK - ONT
2 stops30h 28mKorean Air
Deal found 4/28$870
This United Airlines deal was found by Cheapflights users on 4/29. 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 9/161:42 pmONT - CGK
2 stops33h 53mUnited Airlines
Wed 10/12:30 pmCGK - ONT
2 stops35h 43mUnited Airlines
Deal found 4/29$891
This Gotogate deal was found by Cheapflights users on 4/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2610:45 pmONT - CGK
1 stop23h 55mChina Airlines
Tue 12/161:30 amCGK - ONT
1 stop30h 20mChina Airlines
Deal found 4/28$921
This United Airlines deal was found by Cheapflights users on 4/30. 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 9/166:39 pmONT - SUB
2 stops31h 01mUnited Airlines
Fri 12/124:30 pmSUB - ONT
2 stops32h 29mUnited Airlines
Deal found 4/30$967
This Delta deal was found by Cheapflights users on 4/30. 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.
Tue 6/246:25 amONT - CGK
2 stops47h 45mDelta
Mon 8/259:50 pmCGK - ONT
2 stops39h 53mDelta
Deal found 4/30$988
This Gurufare deal was found by Cheapflights users on 4/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/611:45 pmONT - CGK
1 stop21h 30mSTARLUX Airlines
Fri 8/2212:15 pmCGK - ONT
1 stop19h 25mSTARLUX Airlines
Deal found 4/29$997
This Travelocity deal was found by Cheapflights users on 4/30. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/267:00 amONT - CGK
2 stops46h 15mMultiple Airlines
Thu 12/111:30 amCGK - ONT
1 stop30h 20mMultiple Airlines
Deal found 4/30$1,062
This oojo deal was found by Cheapflights users on 4/30. 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 9/86:00 amONT - CGK
2 stops35h 30mQatar Airways
Thu 10/306:35 pmCGK - ONT
2 stops42h 02mQatar Airways
Deal found 4/30$1,158
This FlightHub deal was found by Cheapflights users on 4/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1512:10 amONT - SUB
2 stops27h 35mChina Airlines
Fri 1/167:05 amSUB - ONT
2 stops24h 45mChina Airlines
Deal found 4/30$1,359
This Mytrip deal was found by Cheapflights users on 4/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2412:10 amONT - SUB
2 stops27h 20mMultiple Airlines
Tue 7/157:55 pmSUB - ONT
2 stops35h 45mMultiple Airlines
Deal found 4/29$1,553
This oojo deal was found by Cheapflights users on 4/30. 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.
Wed 7/236:00 amONT - CGK
2 stops27h 55mJapan Airlines
Tue 8/129:55 pmCGK - ONT
2 stops34h 09mJapan Airlines
Deal found 4/30$1,554
This oojo deal was found by Cheapflights users on 4/30. 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 5/1210:59 pmONT - CGK
2 stops44h 36mEtihad Airways
Tue 5/2712:45 amCGK - ONT
2 stops58h 26mEtihad Airways
Deal found 4/30$1,559

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 May 1, 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 9/16

1:42 pm-1:35 pm

2 stops33h 53m

Jakarta Soekarno-Hatta Intl

Wed 10/1

2:30 pm-12:13 pm

2 stops35h 43m

$891

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Mon 9/15

12:10 am-1:35 pm

1 stop23h 25m

Jakarta Soekarno-Hatta Intl

Tue 9/30

1:30 am-6:00 pm

1 stop30h 30m

$946

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Tue 5/13

6:00 am-8:10 pm

2 stops48h 10m

Jakarta Soekarno-Hatta Intl

Mon 5/26

9:50 pm-6:20 pm

2 stops34h 30m

$983

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Tue 6/24

6:25 am-8:10 pm

2 stops47h 45m

Jakarta Soekarno-Hatta Intl

Mon 8/25

9:50 pm-11:43 pm

2 stops39h 53m

$988

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Wed 8/6

11:45 pm-11:15 am

1 stop21h 30m

Jakarta Soekarno-Hatta Intl

Fri 8/22

12:15 pm-5:40 pm

1 stop19h 25m

$997

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Tue 9/16

6:00 am-11:55 pm

2 stops27h 55m

Jakarta Soekarno-Hatta Intl

Wed 10/1

12:15 pm-5:05 pm

1 stop18h 50m

$1,151

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Mon 9/8

6:00 am-7:30 am

2 stops35h 30m

Jakarta Soekarno-Hatta Intl

Thu 10/30

6:35 pm-10:37 pm

2 stops42h 02m

$1,158

OntarioSurabaya

ONT - SUB

ONTSUB

Ontario

Sun 9/14

12:45 am-10:45 am

2 stops44h 00m

Surabaya Juanda

Fri 10/31

5:00 am-5:50 pm

2 stops26h 50m

$1,297

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Wed 7/23

6:00 am-11:55 pm

2 stops27h 55m

Jakarta Soekarno-Hatta Intl

Tue 8/12

9:55 pm-6:04 pm

2 stops34h 09m

$1,554

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Mon 5/12

10:59 pm-9:35 am

2 stops44h 36m

Jakarta Soekarno-Hatta Intl

Tue 5/27

12:45 am-9:11 pm

2 stops58h 26m

$1,559

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 22 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, October is the cheapest month in which you can book a flight from Ontario to Java (average of $920). Flying from Ontario to Java in June is currently the most expensive (average of $1,477). 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 May 1, 2025.

When flying from Ontario to Java, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Java by month

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

In terms of precipitation, rainfall in Java ranges from 7.0 - 15.1 inches per month. April is typically the wettest month, when rainfall can reach 15.1 in. July is typically the driest time to visit Java when rainfall is around 7.0 in.

Temperature in Java by month

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

If weather is an important factor for your trip to Java, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 75.2 F).

Reviews of airlines servicing Java

Get insights into the airlines that provide service to Java. 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 Java. Reviews last updated May 1, 2025.
To help decide which airline to fly from Ontario to Java, see what other customers have to say about STARLUX Airlines, EVA Air and Korean Air. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
161 reviews

Food

8.9

Boarding

9.0

Crew

9.3

Entertainment

9.0

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
161 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Food

8.9

Boarding

9.0

Crew

9.3

Entertainment

9.0

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
EVA Air
8.4
Very good
1,186 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Food

8.9

Boarding

9.0

Crew

9.3

Entertainment

9.0

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Korean Air
8.4
Very good
1,068 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Food

8.9

Boarding

9.0

Crew

9.3

Entertainment

9.0

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Japan Airlines
8.3
Very good
1,464 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Food

8.9

Boarding

9.0

Crew

9.3

Entertainment

9.0

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very good
732 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Food

8.9

Boarding

9.0

Crew

9.3

Entertainment

9.0

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

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.

  • 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 $610 on United Airlines. Other airlines that offer cheap prices include China Airlines from $612 and Qatar Airways from $740 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, October is the cheapest month in which you can book a flight from Ontario to Java (average of $920). Flying from Ontario to Java in June is currently the most expensive (average of $1,477). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Java

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Top 2 airlines flying from Ontario to Java

Discover the top 2 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$925Average$1,026FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$1,015Average$1,029FlexibilityNo cancel feeOn-time69%

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