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$1,004+ Cheap flights from Ontario (ONT) to Surabaya (SUB)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SUB
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap flight deals from Ontario to Surabaya

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Surabaya (SUB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2025.

Round-trip from

$1,004
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$1,336
From Ontario to Surabaya Juanda
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($39 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 July 2025
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Find flight deals from Ontario to Surabaya

Cheapest flights from Ontario to Surabaya
Explore the most affordable flight options available from Ontario to Surabaya. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/81:42 pmONT - SUB
2 stops59h 58mUnited Airlines
Tue 10/77:10 pmSUB - ONT
2 stops31h 03mUnited Airlines
Deal found 7/28$1,004
This FlightHub deal was found by Cheapflights users on 7/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/312:45 amONT - SUB
2 stops27h 00mChina Airlines
Sat 10/44:30 pmSUB - ONT
2 stops63h 30mChina Airlines
Deal found 7/28$1,235
This Mytrip deal was found by Cheapflights users on 7/27. 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 7/2912:45 amONT - SUB
2 stops28h 20mMultiple Airlines
Wed 8/65:55 amSUB - ONT
3 stops26h 45mMultiple Airlines
Deal found 7/27$1,622
This Gurufare deal was found by Cheapflights users on 7/27. 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.
Fri 9/56:00 amONT - SUB
3 stops38h 25mJapan Airlines
Sun 10/59:20 amSUB - ONT
3 stops47h 13mJapan Airlines
Deal found 7/27$3,911

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Surabaya 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 July 29, 2025.
Use the filters below to find and compare flights from Ontario to Surabaya that are best for you.

Fly from

Ontario

Fly to

Surabaya

Route

Depart

Return

Price

OntarioSurabaya

ONT - SUB

ONTSUB

Ontario

Mon 9/8

1:42 pm-3:40 pm

2 stops59h 58m

Surabaya Juanda

Tue 10/7

7:10 pm-12:13 pm

2 stops31h 03m

$1,004

OntarioSurabaya

ONT - SUB

ONTSUB

Ontario

Wed 9/3

12:45 am-5:45 pm

2 stops27h 00m

Surabaya Juanda

Sat 10/4

4:30 pm-6:00 pm

2 stops63h 30m

$1,235

OntarioSurabaya

ONT - SUB

ONTSUB

Ontario

Sat 10/18

1:15 pm-10:00 pm

3 stops42h 45m

Surabaya Juanda

Fri 10/31

7:05 am-4:50 pm

2 stops23h 45m

$3,520

OntarioSurabaya

ONT - SUB

ONTSUB

Ontario

Fri 9/5

6:00 am-10:25 am

3 stops38h 25m

Surabaya Juanda

Sun 10/5

9:20 am-6:33 pm

3 stops47h 13m

$3,911

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Ontario to Surabaya

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

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

Currently, September is the cheapest month in which you can book a flight from Ontario to Surabaya (average of $886). Flying from Ontario to Surabaya in December is currently the most expensive (average of $1,676). 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.

Reviews of airlines servicing Surabaya

Get insights into the airlines that provide service to Surabaya. 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 Surabaya. Reviews last updated July 29, 2025.
Peruse reviews from past customers who have flown with Japan Airlines, China Airlines, and United Airlines from Ontario to Surabaya to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very good
1,535 reviews

Comfort

8.2

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

7.7

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
Japan Airlines
8.3
Very good
1,535 reviews
Japan Airlines
8.3
Very good
1,535 reviews

Comfort

8.2

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

7.7

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
China Airlines
8.3
Very good
754 reviews
Japan Airlines
8.3
Very good
1,535 reviews

Comfort

8.2

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

7.7

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.
United Airlines
7.4
Good
8,896 reviews
Japan Airlines
8.3
Very good
1,535 reviews

Comfort

8.2

Boarding

8.4

Overall

8.3

Entertainment

7.8

Food

7.7

Crew

8.7

Reviews

1 / 20
2.0
Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.

Related info for your journey

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

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Ontario to Surabaya (average of $886). Flying from Ontario to Surabaya in December is currently the most expensive (average of $1,676). 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.

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