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$519+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CGK
Aug 7 — Aug 141
Thu 8/7
Thu 8/14
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 August 2, 2025.

Round-trip from

$770
(Korean Air)

One-way from

$519
(oojo)

Popular in

June

Cheapest in

September

Average price

$869
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. 14% potential increase in price ($163 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 2, 2025.

This Korean Air deal was found by Cheapflights users on 8/1. 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 10/276:37 amONT - CGK
2 stops47h 38mKorean Air
Tue 11/119:50 pmCGK - ONT
2 stops34h 27mKorean Air
Deal found 8/1$770
This oojo deal was found by Cheapflights users on 8/1. 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.
Fri 10/311:10 pmONT - CGK
1 stop22h 05mSTARLUX Airlines
Fri 10/1712:15 pmCGK - ONT
1 stop18h 50mSTARLUX Airlines
Deal found 8/1$865
This oojo deal was found by Cheapflights users on 8/1. 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.
Fri 10/37:47 pmONT - SUB
2 stops47h 18mSingapore Airlines
Mon 11/310:15 amSUB - ONT
2 stops44h 02mSingapore Airlines
Deal found 8/1$872
This oojo deal was found by Cheapflights users on 7/31. 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 8/1712:45 amONT - CGK
1 stop33h 45mChina Airlines
Tue 9/22:40 pmCGK - ONT
1 stop42h 00mChina Airlines
Deal found 7/31$884
This United Airlines deal was found by Cheapflights users on 8/1. 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 9/86:00 amONT - CGK
2 stops27h 45mUnited Airlines
Mon 9/227:00 amCGK - ONT
2 stops27h 33mUnited Airlines
Deal found 8/1$946
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/301:53 pmONT - SUB
2 stops38h 22mUnited Airlines
Wed 11/54:30 pmSUB - ONT
2 stops40h 04mUnited Airlines
Deal found 7/31$969
This Expedia deal was found by Cheapflights users on 7/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/46:00 amONT - CGK
2 stops48h 10mMultiple Airlines
Wed 10/1512:15 pmCGK - ONT
1 stop18h 50mMultiple Airlines
Deal found 7/31$977
This oojo deal was found by Cheapflights users on 8/1. 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.
Fri 10/37:47 pmONT - CGK
2 stops48h 23mSingapore Airlines
Fri 10/177:20 pmCGK - ONT
2 stops42h 43mSingapore Airlines
Deal found 8/1$1,079
This Trip.com deal was found by Cheapflights users on 8/1. 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.
Sat 8/3012:45 amONT - SUB
2 stops53h 45mMultiple Airlines
Sun 9/77:05 amSUB - ONT
2 stops25h 35mMultiple Airlines
Deal found 8/1$1,231
This FlightHub deal was found by Cheapflights users on 7/31. 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.
Fri 10/312:10 amONT - SUB
2 stops27h 35mChina Airlines
Sun 11/27:05 amSUB - ONT
2 stops48h 45mChina Airlines
Deal found 7/31$1,234
This Ovago deal was found by Cheapflights users on 8/1. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amONT - SUB
3 stops38h 25mJapan Airlines
Mon 11/37:00 pmSUB - ONT
3 stops35h 17mJapan Airlines
Deal found 8/1$2,782

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 August 2, 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

Mon 10/27

6:37 am-8:15 pm

2 stops47h 38m

Jakarta Soekarno-Hatta Intl

Tue 11/11

9:50 pm-5:17 pm

2 stops34h 27m

$770

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Fri 10/3

11:10 pm-11:15 am

1 stop22h 05m

Jakarta Soekarno-Hatta Intl

Fri 10/17

12:15 pm-5:05 pm

1 stop18h 50m

$865

OntarioSurabaya

ONT - SUB

ONTSUB

Ontario

Fri 10/3

7:47 pm-9:05 am

2 stops47h 18m

Surabaya Juanda

Mon 11/3

10:15 am-3:17 pm

2 stops44h 02m

$872

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Tue 1/20

10:50 pm-1:40 pm

1 stop23h 50m

Jakarta Soekarno-Hatta Intl

Thu 2/5

1:30 am-4:50 pm

1 stop30h 20m

$880

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Wed 1/21

6:55 pm-7:35 am

2 stops45h 40m

Jakarta Soekarno-Hatta Intl

Sat 2/7

5:25 am-3:12 pm

2 stops24h 47m

$917

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Tue 1/20

6:00 am-11:55 pm

2 stops26h 55m

Jakarta Soekarno-Hatta Intl

Sun 2/8

9:25 pm-3:12 pm

2 stops32h 47m

$936

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Mon 9/8

6:00 am-11:45 pm

2 stops27h 45m

Jakarta Soekarno-Hatta Intl

Mon 9/22

7:00 am-8:33 pm

2 stops27h 33m

$946

OntarioSurabaya

ONT - SUB

ONTSUB

Ontario

Tue 9/30

1:53 pm-6:15 pm

2 stops38h 22m

Surabaya Juanda

Wed 11/5

4:30 pm-5:34 pm

2 stops40h 04m

$969

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Sat 10/4

6:00 am-8:10 pm

2 stops48h 10m

Jakarta Soekarno-Hatta Intl

Wed 10/15

12:15 pm-5:05 pm

1 stop18h 50m

$977

OntarioJakarta

ONT - CGK

ONTCGK

Ontario

Thu 10/2

6:00 am-3:00 pm

2 stops43h 00m

Jakarta Soekarno-Hatta Intl

Thu 10/23

12:55 am-12:03 am

2 stops37h 08m

$1,148

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/1

Showing 1-10 of 23 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 $919). Flying from Ontario to Java in June is currently the most expensive (average of $1,357). 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 August 2, 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.

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 August 2, 2025.
Read through reviews of airlines operating flights from Ontario to Java, such as STARLUX Airlines, EVA Air, and Korean Air. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.0
Wonderful
199 reviews

Crew

9.3

Entertainment

8.9

Overall

9.0

Boarding

9.0

Food

8.8

Comfort

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.0
Wonderful
199 reviews
STARLUX Airlines
9.0
Wonderful
199 reviews

Crew

9.3

Entertainment

8.9

Overall

9.0

Boarding

9.0

Food

8.8

Comfort

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
EVA Air
8.4
Very good
1,220 reviews
STARLUX Airlines
9.0
Wonderful
199 reviews

Crew

9.3

Entertainment

8.9

Overall

9.0

Boarding

9.0

Food

8.8

Comfort

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Korean Air
8.4
Very good
1,122 reviews
STARLUX Airlines
9.0
Wonderful
199 reviews

Crew

9.3

Entertainment

8.9

Overall

9.0

Boarding

9.0

Food

8.8

Comfort

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Japan Airlines
8.3
Very good
1,541 reviews
STARLUX Airlines
9.0
Wonderful
199 reviews

Crew

9.3

Entertainment

8.9

Overall

9.0

Boarding

9.0

Food

8.8

Comfort

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
China Airlines
8.3
Very good
755 reviews
STARLUX Airlines
9.0
Wonderful
199 reviews

Crew

9.3

Entertainment

8.9

Overall

9.0

Boarding

9.0

Food

8.8

Comfort

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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 $519 on China Airlines. Other airlines that offer cheap prices include American Airlines from $532 and United Airlines from $563 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 $919). Flying from Ontario to Java in June is currently the most expensive (average of $1,357). 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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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 August 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
STARLUX AirlinesCheapest$705Average$1,111FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$933Average$1,039FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$1,015Average$1,029FlexibilityNo cancel feeOn-time69%

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