HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Busan

$591+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PUS
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
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

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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,002
(oojo)

One-way from

$591
(oojo)

Popular in

July

Cheapest in

October

Average price

$1,081
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. 16% potential increase in price ($275 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find 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 March 25, 2025.

This oojo deal was found by Cheapflights users on 3/24. 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 4/2712:10 amONT - PUS
1 stop26h 50mChina Airlines
Tue 5/612:15 pmPUS - ONT
1 stop21h 45mChina Airlines
Deal found 3/24$1,002
This Kiwi.com deal was found by Cheapflights users on 3/24. 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.
Wed 6/411:10 pmONT - PUS
1 stop28h 45mMultiple Airlines
Thu 6/192:00 pmPUS - ONT
2 stops25h 39mMultiple Airlines
Deal found 3/24$1,674
This Delta deal was found by Cheapflights users on 3/24. 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 6/46:00 amONT - PUS
2 stops21h 35mDelta
Thu 6/198:00 amPUS - ONT
2 stops25h 05mDelta
Deal found 3/24$2,022

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 March 25, 2025.
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

Sun 4/27

12:10 am-7:00 pm

1 stop26h 50m

Busan Gimhae

Tue 5/6

12:15 pm-6:00 pm

1 stop21h 45m

$1,002

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Wed 6/4

11:10 pm-7:55 pm

1 stop28h 45m

Busan Gimhae

Thu 6/19

2:00 pm-11:39 pm

2 stops25h 39m

$1,674

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Wed 6/4

6:00 am-7:35 pm

2 stops21h 35m

Busan Gimhae

Thu 6/19

8:00 am-5:05 pm

2 stops25h 05m

$2,022

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Sun 4/27

12:10 am-11:15 am

1 stop19h 05m

$591

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Sat 4/12

12:10 am-6:15 am

1 stop38h 05m

$616

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Mon 4/28

6:00 am-9:35 pm

2 stops23h 35m

$3,150

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Compare providers for flights from Ontario to Busan

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Busan in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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, August is the cheapest month in which you can book a flight from Ontario to Busan (average of $1,166). Flying from Ontario to Busan in December is currently the most expensive (average of $2,247). 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.

Rainfall in Busan by month

Plan your trip to Busan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Busan ranges from 0.9 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. December is typically the driest time to visit Busan when rainfall is around 0.9 in.

Temperature in Busan by month

Plan your trip to Busan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Busan, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 March 25, 2025.
Japan Airlines
8.3
Very good
1,440 reviews

Entertainment

7.8

Overall

8.3

Crew

8.7

Food

7.7

Boarding

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Japan Airlines
8.3
Very good
1,440 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Entertainment

7.8

Overall

8.3

Crew

8.7

Food

7.7

Boarding

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
China Airlines
8.2
Very good
723 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Entertainment

7.8

Overall

8.3

Crew

8.7

Food

7.7

Boarding

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Delta
8.0
Very good
7,890 reviews
Japan Airlines
8.3
Very good
1,440 reviews

Entertainment

7.8

Overall

8.3

Crew

8.7

Food

7.7

Boarding

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

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.

  • What are the cheapest airlines flying from Ontario to Busan round-trip?

    Cheapflights users have booked flights from Ontario to Busan round-trip from $1,002. Other airlines that can offer you cheap pricing are Delta, from $1,882, and Japan Airlines, from $8,217.

  • 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, August is the cheapest month in which you can book a flight from Ontario to Busan (average of $1,166). Flying from Ontario to Busan in December is currently the most expensive (average of $2,247). 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.

Alternative routes for Ontario to Busan

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Incheon Intl flights
San Francisco to Incheon Intl flights
Los Angeles to Gimpo Intl flights
San Francisco to Gimpo Intl flights
Ontario to Incheon Intl flights
San Jose to Incheon Intl flights
Las Vegas to Incheon Intl flights
Oakland to Incheon Intl flights
Santa Ana to Incheon Intl flights
San Diego to Incheon Intl flights
San Diego to Gimpo Intl flights
Burbank to Incheon Intl flights
Los Angeles to Busan flights
Long Beach to Incheon Intl flights
Las Vegas to Gimpo Intl flights
Sacramento to Incheon Intl flights
San Jose to Gimpo Intl flights
Ontario to Gimpo Intl flights
Palm Springs to Incheon Intl flights
Los Angeles to Jeju City flights
Reno to Incheon Intl flights
Santa Ana to Busan flights
San Francisco to Busan flights
Los Angeles to Daegu flights
San Francisco to Jeju City flights
San Jose to Busan flights
Santa Barbara to Incheon Intl flights
Monterey to Incheon Intl flights
San Jose to Jeju City flights
Las Vegas to Busan flights
Ontario to Jeju City flights
San Diego to Jeju City flights
Medford to Incheon Intl flights
Oakland to Busan flights
Fresno to Busan flights

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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$1,023Average$1,091FlexibilityNo 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.