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Ontario

$504+ Cheap flights from Busan (PUS) to Ontario (ONT)

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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
PUS — ONT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Busan to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Busan (PUS) to Ontario (ONT). 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 11, 2025.

Round-trip from

$815
(oojo)

One-way from

$504
(Kiwi.com)

Popular in

January

Cheapest in

March

Average price

$988
From Busan Gimhae to Ontario
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One-way flight from Busan Gimhae to Ontario
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Highest demand for flights based on searches. 6% potential increase in price ($67 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($28 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 Busan to Ontario

Cheapest flights from Busan to Ontario
Explore the most affordable flight options available from Busan to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This oojo deal was found by Cheapflights users on 9/9. 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 9/258:00 pmPUS - ONT
1 stop38h 00mChina Airlines
Thu 10/212:10 amONT - PUS
1 stop26h 50mChina Airlines
Deal found 9/9$815
This Delta deal was found by Cheapflights users on 9/9. 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.
Wed 9/244:30 pmPUS - ONT
2 stops22h 10mDelta
Thu 10/26:00 amONT - PUS
2 stops22h 45mDelta
Deal found 9/9$832
This China Airlines deal was found by Cheapflights users on 9/11. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1210:20 amPUS - ONT
1 stop23h 40mChina Airlines
Sat 10/1812:10 amONT - PUS
1 stop19h 05mChina Airlines
Deal found 9/11$855
This China Airlines deal was found by Cheapflights users on 9/9. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/258:00 pmPUS - ONT
1 stop38h 00mChina Airlines
Wed 10/112:10 amONT - PUS
1 stop19h 05mChina Airlines
Deal found 9/9$856
This China Airlines deal was found by Cheapflights users on 9/9. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2410:20 amPUS - ONT
1 stop23h 40mChina Airlines
Fri 10/312:10 amONT - PUS
1 stop26h 50mChina Airlines
Deal found 9/9$918
This China Airlines deal was found by Cheapflights users on 9/10. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/108:00 pmPUS - ONT
1 stop38h 00mChina Airlines
Thu 10/1612:10 amONT - PUS
1 stop26h 50mChina Airlines
Deal found 9/10$959
This China Airlines deal was found by Cheapflights users on 9/9. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2410:20 amPUS - ONT
1 stop23h 40mChina Airlines
Thu 10/212:10 amONT - PUS
1 stop26h 50mChina Airlines
Deal found 9/9$979
This China Airlines deal was found by Cheapflights users on 9/9. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2612:15 pmPUS - ONT
1 stop21h 45mChina Airlines
Wed 10/112:10 amONT - PUS
1 stop19h 05mChina Airlines
Deal found 9/9$1,085
This Korean Air deal was found by Cheapflights users on 9/10. 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.
Fri 10/38:00 pmPUS - ONT
2 stops42h 40mKorean Air
Mon 10/67:35 amONT - PUS
2 stops21h 10mKorean Air
Deal found 9/10$1,128
This China Airlines deal was found by Cheapflights users on 9/9. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2612:15 pmPUS - ONT
1 stop21h 45mChina Airlines
Thu 10/212:10 amONT - PUS
1 stop26h 50mChina Airlines
Deal found 9/9$1,147
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/32:15 pmPUS - ONT
1 stop19h 45mMultiple Airlines
Mon 10/66:00 amONT - PUS
2 stops22h 45mMultiple Airlines
Deal found 9/10$1,678

Cheapflights Fare Finder

 
Customize your flight search to find flights from Busan to Ontario 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 11, 2025.
Use the filters below to find and compare flights from Busan to Ontario that are best for you.

Fly from

Busan

Fly to

Ontario

Route

Depart

Return

Price

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Thu 9/25

8:00 pm-6:00 pm

1 stop38h 00m

Ontario

Thu 10/2

12:10 am-7:00 pm

1 stop26h 50m

$815

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Thu 9/25

4:30 pm-10:40 pm

2 stops22h 10m

Ontario

Thu 10/2

6:00 am-8:45 pm

2 stops22h 45m

$832

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Wed 9/24

4:30 pm-10:40 pm

2 stops22h 10m

Ontario

Thu 10/2

6:00 am-8:45 pm

2 stops22h 45m

$832

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Sun 10/12

10:20 am-6:00 pm

1 stop23h 40m

Ontario

Sat 10/18

12:10 am-11:15 am

1 stop19h 05m

$855

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Thu 9/25

8:00 pm-6:00 pm

1 stop38h 00m

Ontario

Wed 10/1

12:10 am-11:15 am

1 stop19h 05m

$856

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Thu 9/25

8:00 pm-6:00 pm

1 stop38h 00m

Ontario

Fri 10/3

12:10 am-7:00 pm

1 stop26h 50m

$856

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Wed 9/24

10:20 am-6:00 pm

1 stop23h 40m

Ontario

Fri 10/3

12:10 am-7:00 pm

1 stop26h 50m

$918

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Wed 9/24

10:20 am-6:00 pm

1 stop23h 40m

Ontario

Thu 10/2

12:10 am-7:00 pm

1 stop26h 50m

$979

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Fri 9/26

12:15 pm-6:00 pm

1 stop21h 45m

Ontario

Wed 10/1

12:10 am-11:15 am

1 stop19h 05m

$1,085

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Fri 9/26

12:15 pm-6:00 pm

1 stop21h 45m

Ontario

Fri 10/3

12:10 am-7:00 pm

1 stop26h 50m

$1,085

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 14 results
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Best time to book a flight from Busan to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Busan to Ontario (average of $246). Flying from Busan to Ontario in March is currently the most expensive (average of $328). 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.

Related info for your journey

Find useful and relevant information for your journey from Busan to Ontario. 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 Busan to Ontario?

    For as low as $832, China Airlines can have you in Ontario from Busan in 22h 10m. The distance from Busan to Ontario is about 6004 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Busan to Ontario (average of $246). Flying from Busan to Ontario in March is currently the most expensive (average of $328). 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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