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Busan

$475+ 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
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap 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 January 29, 2026.

This FlightHub deal was found by Cheapflights users on 1/26. 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 4/1312:10 am
ONT
-
PUS
1 stop17h 20m
China Airlines
Wed 4/2210:30 am
PUS
-
ONT
1 stop23h 30m
China Airlines
Deal found 1/26$893
This oojo deal was found by Cheapflights users on 1/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1212:10 am
ONT
-
PUS
1 stop17h 20m
China Airlines
Sat 4/2510:30 am
PUS
-
ONT
1 stop23h 30m
China Airlines
Deal found 1/27$897
This oojo deal was found by Cheapflights users on 1/29. 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 3/911:50 pm
ONT
-
PUS
1 stop27h 00m
China Airlines
Thu 3/1911:50 am
PUS
-
ONT
1 stop22h 00m
China Airlines
Deal found 1/29$941
This China Airlines deal was found by Cheapflights users on 1/26. 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 9/212:45 am
ONT
-
PUS
1 stop26h 15m
China Airlines
Mon 9/712:15 pm
PUS
-
ONT
1 stop22h 25m
China Airlines
Deal found 1/26$991
This oojo deal was found by Cheapflights users on 1/29. 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 10/1112:10 am
ONT
-
PUS
1 stop19h 05m
China Airlines
Mon 10/2611:50 am
PUS
-
ONT
1 stop22h 00m
China Airlines
Deal found 1/29$1,100
This oojo deal was found by Cheapflights users on 1/29. 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.
Tue 3/310:50 pm
ONT
-
PUS
1 stop19h 00m
China Airlines
Tue 3/1711:50 am
PUS
-
ONT
1 stop22h 00m
China Airlines
Deal found 1/29$1,144
This Korean Air deal was found by Cheapflights users on 1/26. 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.
Thu 9/37:00 am
ONT
-
PUS
2 stops20h 35m
Korean Air
Mon 9/77:00 am
PUS
-
ONT
2 stops26h 16m
Korean Air
Deal found 1/26$1,295
This oojo deal was found by Cheapflights users on 1/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2810:50 pm
ONT
-
PUS
1 stop19h 00m
China Airlines
Mon 3/911:50 am
PUS
-
ONT
1 stop22h 00m
China Airlines
Deal found 1/27$1,320
This Trip.com deal was found by Cheapflights users on 1/29. 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.
Thu 5/2112:10 am
ONT
-
PUS
1 stop17h 20m
China Airlines
Mon 6/112:15 pm
PUS
-
ONT
1 stop21h 45m
China Airlines
Deal found 1/29$1,344
This oojo deal was found by Cheapflights users on 1/29. 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 5/2112:10 am
ONT
-
PUS
1 stop17h 20m
China Airlines
Mon 5/2512:15 pm
PUS
-
ONT
1 stop21h 45m
China Airlines
Deal found 1/29$1,382

Find 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$893
(FlightHub)

One-way from

$475
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,454
Provider with most accurate pricing for Ontario-Busan Gimhae flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Busan Gimhae flights.
Search Deals
From Ontario to Busan Gimhae
Search Deals
One-way flight from Ontario to Busan Gimhae
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($255 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 29, 2026.
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

Mon 4/13

12:10 am-9:30 am

1 stop17h 20m

Busan Gimhae

Wed 4/22

10:30 am-6:00 pm

1 stop23h 30m

$893

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Sun 4/12

12:10 am-9:30 am

1 stop17h 20m

Busan Gimhae

Sat 4/25

10:30 am-6:00 pm

1 stop23h 30m

$897

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Mon 3/9

11:50 pm-6:50 pm

1 stop27h 00m

Busan Gimhae

Thu 3/19

11:50 am-5:50 pm

1 stop22h 00m

$941

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Tue 3/3

10:50 pm-10:50 am

1 stop19h 00m

Busan Gimhae

Tue 3/17

11:50 am-5:50 pm

1 stop22h 00m

$1,144

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Sat 2/28

10:50 pm-10:50 am

1 stop19h 00m

Busan Gimhae

Mon 3/9

11:50 am-5:50 pm

1 stop22h 00m

$1,320

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Thu 5/21

12:10 am-9:30 am

1 stop17h 20m

Busan Gimhae

Mon 6/1

12:15 pm-6:00 pm

1 stop21h 45m

$1,344

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Thu 5/21

12:10 am-9:30 am

1 stop17h 20m

Busan Gimhae

Mon 5/25

12:15 pm-6:00 pm

1 stop21h 45m

$1,382

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Tue 4/14

7:00 am-7:35 pm

2 stops20h 35m

Busan Gimhae

Wed 4/22

10:40 am-5:15 pm

2 stops22h 35m

$1,437

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Mon 6/8

12:10 am-11:15 am

1 stop19h 05m

Busan Gimhae

Thu 6/18

12:15 pm-6:00 pm

1 stop21h 45m

$1,440

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Tue 6/2

12:10 am-11:15 am

1 stop19h 05m

Busan Gimhae

Thu 6/11

8:00 pm-6:00 pm

1 stop38h 00m

$1,444

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 19 results
1
2
  • Most accurate provider: When it comes to deals on Ontario-Busan flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Busan flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Busan flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Busan flights, Cheapflights users trust FlightHub the most. FlightHub 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 Ontario-Busan 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 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, February is the cheapest month in which you can book a flight from Ontario to Busan (average of $640). Flying from Ontario to Busan in January is currently the most expensive (average of $1,331). 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 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 17h 20m. The distance from Ontario to Busan is about 6004 mi.

  • 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, February is the cheapest month in which you can book a flight from Ontario to Busan (average of $640). Flying from Ontario to Busan in January is currently the most expensive (average of $1,331). 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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