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$544+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
PUS — ONT
Apr 15 — Apr 221
Wed 4/15
Wed 4/22
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 March 16, 2026.

This China Airlines deal was found by Cheapflights users on 3/12. 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 10/2010:30 am
PUS
-
ONT
1 stop23h 30m
China Airlines
Sat 10/2411:50 pm
ONT
-
PUS
1 stop27h 00m
China Airlines
Deal found 3/12$822
This FlightHub deal was found by Cheapflights users on 3/12. 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 12/217:50 pm
PUS
-
ONT
1 stop38h 00m
China Airlines
Sun 1/1010:50 pm
ONT
-
PUS
1 stop19h 00m
China Airlines
Deal found 3/12$1,006
This Hanatour deal was found by Cheapflights users on 3/12. 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/204:30 pm
PUS
-
ONT
2 stops22h 13m
Delta
Sat 10/245:50 pm
ONT
-
PUS
2 stops33h 45m
Delta
Deal found 3/12$1,037
This Delta deal was found by Cheapflights users on 3/12. 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.
Mon 12/214:10 pm
PUS
-
ONT
2 stops23h 33m
Delta
Sun 1/105:05 pm
ONT
-
PUS
2 stops34h 40m
Delta
Deal found 3/12$1,059
This Hanatour deal was found by Cheapflights users on 3/13. 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2912:15 pm
PUS
-
ONT
1 stop21h 45m
China Airlines
Mon 6/112:10 am
ONT
-
PUS
1 stop19h 05m
China Airlines
Deal found 3/13$1,148
This FlightHub deal was found by Cheapflights users on 3/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2010:30 am
PUS
-
ONT
1 stop23h 30m
China Airlines
Tue 6/212:10 am
ONT
-
PUS
1 stop19h 05m
China Airlines
Deal found 3/15$1,190
This Expedia deal was found by Cheapflights users on 3/12. 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.
Tue 10/2010:30 am
PUS
-
ONT
1 stop23h 30m
Multiple Airlines
Sat 10/247:00 am
ONT
-
PUS
2 stops33h 10m
Multiple Airlines
Deal found 3/12$1,208
This China Airlines deal was found by Cheapflights users on 3/14. 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 10/2611:50 am
PUS
-
ONT
1 stop22h 00m
China Airlines
Wed 10/2811:50 pm
ONT
-
PUS
1 stop27h 00m
China Airlines
Deal found 3/14$1,272
This Trip.com deal was found by Cheapflights users on 3/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:00 pm
PUS
-
ONT
1 stop38h 00m
China Airlines
Sun 4/1212:10 am
ONT
-
PUS
1 stop17h 20m
China Airlines
Deal found 3/15$1,556

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 March 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,148
(Hanatour)

One-way from

$544
(China Airlines)

Popular in

February

Cheapest in

March

Average price

$650
Provider with most accurate pricing for Busan Gimhae-Los Angeles Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Busan Gimhae-Los Angeles Los Angeles 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. 7% potential increase in price ($80 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 March 2026
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 March 16, 2026.
Use the filters below to find and compare flights from Busan to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Fri 5/29

12:15 pm-6:00 pm

1 stop21h 45m

Ontario

Mon 6/1

12:10 am-11:15 am

1 stop19h 05m

$1,148

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Wed 5/20

10:30 am-6:00 pm

1 stop23h 30m

Ontario

Tue 6/2

12:10 am-11:15 am

1 stop19h 05m

$1,190

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Tue 5/12

12:15 pm-6:00 pm

1 stop21h 45m

Ontario

Sat 5/30

12:10 am-11:15 am

1 stop19h 05m

$3,202

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Wed 5/13

8:00 pm-6:00 pm

1 stop38h 00m

Ontario

Sat 5/30

12:10 am-11:15 am

1 stop19h 05m

$3,256
Quickest round-trip

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Sat 3/28

11:50 am-5:50 pm

1 stop22h 00m

Ontario

Sat 9/5

12:45 am-11:15 am

1 stop18h 30m

$3,397

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Wed 6/3

10:30 am-6:00 pm

1 stop23h 30m

Ontario

Thu 6/25

12:10 am-9:30 am

1 stop17h 20m

$3,415

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Sun 3/29

10:30 am-6:00 pm

1 stop23h 30m

Ontario

Sat 9/5

12:45 am-7:00 pm

1 stop26h 15m

$4,137

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Wed 3/25

11:50 am-5:50 pm

1 stop22h 00m

Ontario

Sat 9/5

12:45 am-11:15 am

1 stop18h 30m

$4,137

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Thu 3/26

11:50 am-5:50 pm

1 stop22h 00m

Ontario

Sat 9/5

12:45 am-11:15 am

1 stop18h 30m

$4,137

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Tue 3/31

12:15 pm-6:00 pm

1 stop21h 45m

Ontario

Sat 9/5

12:45 am-7:00 pm

1 stop26h 15m

$4,137

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/15

Showing 1-10 of 22 resultsSorted by cheapest first
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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, 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 February is currently the most expensive (average of $1,263). 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 $1,148, China Airlines can have you in Ontario from Busan in 21h 45m. The distance from Busan to Ontario is about 6004 mi.

  • 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 February is currently the most expensive (average of $1,263). 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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