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$539+ 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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
PUS — ONT
Jan 13 — Jan 201
Tue 1/13
Tue 1/20
1 adult, Economy
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Cheap 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 December 14, 2025.

This China Airlines deal was found by Cheapflights users on 12/14. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/157:50 pmPUS - ONT
1 stop38h 00mChina Airlines
Mon 12/2210:50 pmONT - PUS
1 stop19h 00mChina Airlines
Deal found 12/14$1,585
This FlightHub deal was found by Cheapflights users on 12/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/157:50 pmPUS - ONT
1 stop38h 00mChina Airlines
Tue 12/3010:50 pmONT - PUS
1 stop27h 00mChina Airlines
Deal found 12/11$2,114
This China Airlines deal was found by Cheapflights users on 12/11. 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.
Sat 12/137:50 pmPUS - ONT
1 stop38h 00mChina Airlines
Tue 12/3010:50 pmONT - PUS
1 stop27h 00mChina Airlines
Deal found 12/11$2,187
This China Airlines deal was found by Cheapflights users on 12/11. 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.
Tue 12/167:50 pmPUS - ONT
1 stop38h 00mChina Airlines
Wed 12/3110:50 pmONT - PUS
1 stop27h 00mChina Airlines
Deal found 12/11$2,255
This FlightHub deal was found by Cheapflights users on 12/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1511:50 amPUS - ONT
1 stop22h 00mChina Airlines
Wed 12/3110:50 pmONT - PUS
1 stop19h 00mChina Airlines
Deal found 12/11$2,279
This China Airlines deal was found by Cheapflights users on 12/11. 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.
Sat 12/137:50 pmPUS - ONT
1 stop38h 00mChina Airlines
Wed 12/3110:50 pmONT - PUS
1 stop27h 00mChina Airlines
Deal found 12/11$2,357
This China Airlines deal was found by Cheapflights users on 12/11. 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.
Fri 12/197:50 pmPUS - ONT
1 stop38h 00mChina Airlines
Wed 12/3110:50 pmONT - PUS
1 stop19h 00mChina Airlines
Deal found 12/11$2,493
This FlightHub deal was found by Cheapflights users on 12/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1611:50 amPUS - ONT
1 stop22h 00mChina Airlines
Thu 1/110:50 pmONT - PUS
1 stop19h 00mChina Airlines
Deal found 12/11$2,545
This China Airlines deal was found by Cheapflights users on 12/11. 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.
Sat 12/1311:50 amPUS - ONT
1 stop22h 00mChina Airlines
Thu 1/110:50 pmONT - PUS
1 stop19h 00mChina Airlines
Deal found 12/11$2,630
This American Airlines deal was found by Cheapflights users on 12/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/154:10 pmPUS - ONT
2 stops23h 18mMultiple Airlines
Mon 12/2211:59 pmONT - PUS
2 stops26h 36mMultiple Airlines
Deal found 12/14$2,714
This China Airlines deal was found by Cheapflights users on 12/11. 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.
Fri 12/197:50 pmPUS - ONT
1 stop38h 00mChina Airlines
Thu 1/110:50 pmONT - PUS
1 stop19h 00mChina Airlines
Deal found 12/11$2,766
This Korean Air deal was found by Cheapflights users on 12/11. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1510:25 amPUS - ONT
2 stops29h 22mKorean Air
Mon 12/296:00 amONT - PUS
2 stops33h 10mKorean Air
Deal found 12/11$2,783

Find 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 December 14, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$840
(Delta)

One-way from

$539
(China Airlines)

Popular in

July

Cheapest in

March

Average price

$932
Provider with most accurate pricing for Busan Gimhae-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Busan Gimhae-Ontario flights.
Search Deals
From Busan Gimhae to Ontario
Search Deals
One-way flight from Busan Gimhae to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 14, 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

Wed 1/28

7:55 am-10:51 pm

2 stops31h 56m

Ontario

Wed 2/4

5:10 pm-7:35 pm

2 stops33h 25m

$840

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Fri 2/6

11:50 am-4:50 pm

1 stop22h 00m

Ontario

Tue 2/10

10:50 pm-6:50 pm

1 stop27h 00m

$1,108

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Wed 1/28

2:05 pm-4:50 pm

2 stops43h 45m

Ontario

Wed 2/4

10:50 pm-8:00 pm

1 stop28h 10m

$1,219

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Wed 1/28

11:50 am-4:50 pm

1 stop22h 00m

Ontario

Wed 2/4

10:50 pm-6:50 pm

1 stop27h 00m

$1,248

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Mon 1/26

11:50 am-4:50 pm

1 stop22h 00m

Ontario

Fri 1/30

10:50 pm-10:50 am

1 stop19h 00m

$1,401

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Fri 1/16

7:50 pm-4:50 pm

1 stop38h 00m

Ontario

Sat 1/31

10:50 pm-10:50 am

1 stop19h 00m

$1,624

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Tue 5/19

12:15 pm-6:00 pm

1 stop21h 45m

$539

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Tue 5/19

7:10 pm-10:57 am

2 stops31h 47m

$720

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Mon 5/18

7:10 pm-10:57 am

2 stops31h 47m

$723

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Fri 12/19

10:25 am-5:07 pm

2 stops23h 42m

$833

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

Showing 1-10 of 17 results
1
2
  • Most accurate provider: When it comes to deals on Busan-Ontario flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Busan-Ontario flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Busan-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Busan-Ontario flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Busan-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, March is the cheapest month in which you can book a flight from Busan to Ontario (average of $592). Flying from Busan to Ontario in December is currently the most expensive (average of $875). 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 $1,108, Delta can have you in Ontario from Busan in 22h. 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, March is the cheapest month in which you can book a flight from Busan to Ontario (average of $592). Flying from Busan to Ontario in December is currently the most expensive (average of $875). 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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