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Busan

$518+ Cheap flights from Ontario (ONT) to Busan (PUS)

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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PUS
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Ontario to Busan

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Busan (PUS). 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 September 17, 2025.

Round-trip from

$938
(oojo)

One-way from

$518
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$941
From Ontario to Busan Gimhae
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One-way flight from Ontario to Busan Gimhae
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Highest demand for flights based on searches. 9% potential increase in price ($144 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($49 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Ontario to Busan

Cheapest flights from Ontario to Busan
Explore the most affordable flight options available from Ontario to Busan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This oojo deal was found by Cheapflights users on 9/15. 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 10/1912:10 amONT - PUS
1 stop19h 05mChina Airlines
Thu 11/67:50 pmPUS - ONT
1 stop38h 00mChina Airlines
Deal found 9/15$968
This oojo deal was found by Cheapflights users on 9/14. 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 11/510:50 pmONT - PUS
1 stop19h 00mChina Airlines
Wed 11/1911:50 amPUS - ONT
1 stop22h 00mChina Airlines
Deal found 9/14$985
This oojo deal was found by Cheapflights users on 9/17. 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 10/1312:10 amONT - PUS
1 stop26h 50mChina Airlines
Tue 10/2110:20 amPUS - ONT
1 stop23h 40mChina Airlines
Deal found 9/17$1,028
This oojo deal was found by Cheapflights users on 9/17. 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 10/2711:50 pmONT - PUS
1 stop27h 00mChina Airlines
Mon 11/311:50 amPUS - ONT
1 stop22h 00mChina Airlines
Deal found 9/17$1,029
This Gotogate deal was found by Cheapflights users on 9/16. 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 10/112:10 amONT - PUS
1 stop26h 50mChina Airlines
Sun 10/1210:20 amPUS - ONT
1 stop23h 40mChina Airlines
Deal found 9/16$1,049
This oojo deal was found by Cheapflights users on 9/16. 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 10/1512:10 amONT - PUS
1 stop26h 50mChina Airlines
Thu 10/2312:15 pmPUS - ONT
1 stop21h 45mChina Airlines
Deal found 9/16$1,050
This SmartFares deal was found by Cheapflights users on 9/15. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1912:10 amONT - PUS
1 stop19h 05mMultiple Airlines
Thu 11/611:50 amPUS - ONT
2 stops28h 42mMultiple Airlines
Deal found 9/15$1,077
This Mytrip deal was found by Cheapflights users on 9/16. 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.
Wed 10/112:10 amONT - PUS
2 stops28h 45mMultiple Airlines
Sun 10/129:35 pmPUS - ONT
2 stops35h 30mMultiple Airlines
Deal found 9/16$1,165
This Mytrip deal was found by Cheapflights users on 9/16. 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.
Mon 9/2912:10 amONT - PUS
1 stop24h 35mMultiple Airlines
Sun 10/52:15 pmPUS - ONT
1 stop19h 45mMultiple Airlines
Deal found 9/16$1,336
This oojo deal was found by Cheapflights users on 9/16. 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 12/1010:50 pmONT - PUS
1 stop27h 00mChina Airlines
Sun 12/2811:50 amPUS - ONT
1 stop22h 00mChina Airlines
Deal found 9/16$1,501

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Busan 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 September 17, 2025.
Use the filters below to find and compare flights from Ontario to Busan that are best for you.

Fly from

Ontario

Fly to

Busan

Route

Depart

Return

Price

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Thu 2/26

10:50 pm-6:50 pm

1 stop27h 00m

Busan Gimhae

Mon 3/30

12:15 pm-6:00 pm

1 stop21h 45m

$938

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Sun 10/19

12:10 am-11:15 am

1 stop19h 05m

Busan Gimhae

Thu 11/6

7:50 pm-4:50 pm

1 stop38h 00m

$968

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Wed 11/5

10:50 pm-10:50 am

1 stop19h 00m

Busan Gimhae

Wed 11/19

11:50 am-4:50 pm

1 stop22h 00m

$985

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Mon 10/13

12:10 am-7:00 pm

1 stop26h 50m

Busan Gimhae

Tue 10/21

10:20 am-6:00 pm

1 stop23h 40m

$1,028

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Mon 10/27

11:50 pm-6:50 pm

1 stop27h 00m

Busan Gimhae

Mon 11/3

11:50 am-4:50 pm

1 stop22h 00m

$1,029

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Wed 10/15

12:10 am-7:00 pm

1 stop26h 50m

Busan Gimhae

Thu 10/23

12:15 pm-6:00 pm

1 stop21h 45m

$1,050

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Sun 10/19

12:10 am-11:15 am

1 stop19h 05m

Busan Gimhae

Thu 11/6

11:50 am-11:32 pm

2 stops28h 42m

$1,077

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Wed 2/18

10:50 pm-6:50 pm

1 stop27h 00m

Busan Gimhae

Wed 2/25

11:50 am-4:50 pm

1 stop22h 00m

$1,163

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Wed 10/1

12:10 am-8:55 pm

2 stops28h 45m

Busan Gimhae

Sun 10/12

9:35 pm-5:05 pm

2 stops35h 30m

$1,165

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Thu 2/26

6:55 pm-10:50 am

2 stops22h 55m

Busan Gimhae

Mon 3/30

8:00 pm-10:53 am

2 stops30h 53m

$1,287

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 18 results
1
2

Best time to book a flight from Ontario to Busan

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

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

Currently, August is the cheapest month in which you can book a flight from Ontario to Busan (average of $1,166). Flying from Ontario to Busan in December is currently the most expensive (average of $2,247). 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 Busan

Get insights into the airlines that provide service to Busan. 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 Busan. Reviews last updated September 17, 2025.
Get a feel of what it's like to fly with China Airlines from Ontario to Busan by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very good
768 reviews

Boarding

8.3

Comfort

8.0

Overall

8.3

Entertainment

8.0

Crew

8.5

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
China Airlines
8.3
Very good
768 reviews
China Airlines
8.3
Very good
768 reviews

Boarding

8.3

Comfort

8.0

Overall

8.3

Entertainment

8.0

Crew

8.5

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

Related info for your journey

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

  • How long is the flight from Ontario to Busan?

    Departing from Ontario to Busan will take you 27h. The distance from Ontario to Busan is about 6004 mi.

  • What is the cheapest airline to fly from Ontario to Busan round-trip?

    Cheapflights users have booked flights from Ontario to Busan round-trip from $930.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Ontario to Busan (average of $1,166). Flying from Ontario to Busan in December is currently the most expensive (average of $2,247). 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 airline flying from Ontario to Busan

Discover the top airline that operate flights from Ontario to Busan. 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$930Average$1,069FlexibilityNo cancel feeOn-time70%

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