HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Busan

$461+ 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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PUS
mar 20 — mar 271
ven 3/20
ven 3/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Busan with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 febbraio 18, 2026.

This oojo deal was found by Cheapflights users on 2/16. 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.
ven 4/1012:10 am
ONT
-
PUS
1 stop17h 20m
China Airlines
gio 5/712:15 pm
PUS
-
ONT
1 stop21h 45m
China Airlines
Deal found 2/16$812
This oojo deal was found by Cheapflights users on 2/17. 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.
ven 8/2812:45 am
ONT
-
PUS
1 stop26h 15m
China Airlines
sab 9/512:15 pm
PUS
-
ONT
1 stop22h 25m
China Airlines
Deal found 2/17$851
This Gotogate deal was found by Cheapflights users on 2/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 8/2812:45 am
ONT
-
PUS
1 stop18h 30m
China Airlines
sab 9/1210:30 am
PUS
-
ONT
1 stop24h 10m
China Airlines
Deal found 2/17$865
This Gurufare deal was found by Cheapflights users on 2/14. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 3/1611:50 pm
ONT
-
PUS
1 stop27h 00m
China Airlines
mar 4/1410:30 am
PUS
-
ONT
1 stop23h 30m
China Airlines
Deal found 2/14$882
This oojo deal was found by Cheapflights users on 2/15. 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.
ven 4/1012:10 am
ONT
-
PUS
1 stop17h 20m
China Airlines
lun 5/118:00 pm
PUS
-
ONT
1 stop38h 00m
China Airlines
Deal found 2/15$893
This oojo deal was found by Cheapflights users on 2/18. 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.
mar 4/1412:10 am
ONT
-
PUS
1 stop26h 50m
China Airlines
gio 5/712:15 pm
PUS
-
ONT
1 stop21h 45m
China Airlines
Deal found 2/18$929
This China Airlines deal was found by Cheapflights users on 2/17. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 9/212:45 am
ONT
-
PUS
1 stop26h 15m
China Airlines
lun 9/78:00 pm
PUS
-
ONT
1 stop38h 40m
China Airlines
Deal found 2/17$942
This BusinessClass deal was found by Cheapflights users on 2/16. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 4/1012:10 am
ONT
-
PUS
1 stop17h 20m
Multiple Airlines
gio 5/78:00 pm
PUS
-
ONT
2 stops29h 45m
Multiple Airlines
Deal found 2/16$947
This Mytrip deal was found by Cheapflights users on 2/16. 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.
mer 4/812:10 am
ONT
-
PUS
1 stop23h 20m
Multiple Airlines
ven 4/172:15 pm
PUS
-
ONT
1 stop19h 45m
Multiple Airlines
Deal found 2/16$956
This BusinessClass deal was found by Cheapflights users on 2/15. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 4/1012:10 am
ONT
-
PUS
1 stop17h 20m
Multiple Airlines
lun 5/118:00 pm
PUS
-
ONT
2 stops19h 59m
Multiple Airlines
Deal found 2/15$987
This BusinessClass deal was found by Cheapflights users on 2/17. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 8/296:58 pm
ONT
-
PUS
2 stops24h 17m
Multiple Airlines
sab 9/512:15 pm
PUS
-
ONT
1 stop22h 25m
Multiple Airlines
Deal found 2/17$1,002

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 febbraio 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$812
(oojo)

One-way from

$461
(Gurufare)

Popular in

June

Cheapest in

April

Average price

$1,470
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. 17% potential increase in price ($287 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($50 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 febbraio 18, 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

ven 4/10

12:10 am-9:30 am

1 stop17h 20m

Busan Gimhae

mar 5/5

10:30 am-6:00 pm

1 stop23h 30m

$812

OntarioBusan

ONT - PUS

ONTPUS

Ontario

lun 3/16

11:50 pm-6:50 pm

1 stop27h 00m

Busan Gimhae

mar 4/14

10:30 am-6:00 pm

1 stop23h 30m

$882

OntarioBusan

ONT - PUS

ONTPUS

Ontario

ven 4/10

12:10 am-9:30 am

1 stop17h 20m

Busan Gimhae

gio 5/7

8:00 pm-9:45 am

2 stops29h 45m

$947

OntarioBusan

ONT - PUS

ONTPUS

Ontario

mer 4/8

12:10 am-3:30 pm

1 stop23h 20m

Busan Gimhae

ven 4/17

2:15 pm-6:00 pm

1 stop19h 45m

$956

OntarioBusan

ONT - PUS

ONTPUS

Ontario

mer 4/8

12:10 am-7:00 pm

1 stop26h 50m

Busan Gimhae

sab 4/25

10:30 am-6:00 pm

1 stop23h 30m

$1,010

OntarioBusan

ONT - PUS

ONTPUS

Ontario

ven 4/10

12:10 am-9:30 am

1 stop17h 20m

Busan Gimhae

gio 4/23

12:15 pm-6:00 pm

1 stop21h 45m

$1,072

OntarioBusan

ONT - PUS

ONTPUS

Ontario

lun 3/9

11:50 pm-6:50 pm

1 stop27h 00m

Busan Gimhae

gio 4/9

12:15 pm-6:00 pm

1 stop21h 45m

$1,085

OntarioBusan

ONT - PUS

ONTPUS

Ontario

sab 4/11

12:10 am-7:00 pm

1 stop26h 50m

Busan Gimhae

dom 4/26

10:30 am-6:00 pm

1 stop23h 30m

$1,129

OntarioBusan

ONT - PUS

ONTPUS

Ontario

mer 3/4

10:50 pm-10:50 am

1 stop19h 00m

Busan Gimhae

gio 4/9

12:15 pm-6:00 pm

1 stop21h 45m

$1,129

OntarioBusan

ONT - PUS

ONTPUS

Ontario

ven 4/10

12:10 am-9:30 am

1 stop17h 20m

Busan Gimhae

dom 4/26

10:30 am-6:00 pm

1 stop23h 30m

$1,133

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/15

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, March is the cheapest month in which you can book a flight from Ontario to Busan (average of $697). Flying from Ontario to Busan in January is currently the most expensive (average of $1,572). 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 febbraio 18, 2026.
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
804 reviews

Food

7.8

Overall

8.3

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
China Airlines
8.3
Very good
804 reviews
China Airlines
8.3
Very good
804 reviews

Food

7.8

Overall

8.3

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.

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.

  • 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 $857.

  • 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, March is the cheapest month in which you can book a flight from Ontario to Busan (average of $697). Flying from Ontario to Busan in January is currently the most expensive (average of $1,572). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 febbraio 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$857Average$899FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.