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.

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.

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).

What is the cheapest time of day to fly from ONT to PUS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Busan as you normally would.

Most accurate provider : When it comes to deals on Ontario-Busan flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Busan flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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.

$548+ Flights from Ontario to Busan

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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 December 20, 2025.

Sun 12/2110:50 pmONT - PUS

1 stop27h 00mChina Airlines

Mon 1/57:50 pmPUS - ONT

1 stop38h 00mChina Airlines

Deal found 12/20

$2,885

Best flights from Ontario to Busan
Discover carefully curated flight deals from Ontario to Busan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 20, 2025.

Sun 4/512:10 amONT - PUS

1 stop17h 20mChina Airlines

Fri 5/1512:15 pmPUS - ONT

1 stop21h 45mChina Airlines

Deal found 12/18

$926

Sat 4/1812:10 amONT - PUS

1 stop26h 50mChina Airlines

Sun 4/2610:30 amPUS - ONT

1 stop23h 30mChina Airlines

Deal found 12/18

$938

Sun 4/1212:10 amONT - PUS

1 stop17h 20mChina Airlines

Mon 4/2012:15 pmPUS - ONT

1 stop21h 45mChina Airlines

Deal found 12/18

$951

Sat 2/710:50 pmONT - PUS

1 stop27h 00mChina Airlines

Wed 2/2511:50 amPUS - ONT

1 stop22h 00mChina Airlines

Deal found 12/17

$960

Mon 3/2311:50 pmONT - PUS

1 stop27h 00mChina Airlines

Wed 4/810:30 amPUS - ONT

1 stop23h 30mChina Airlines

Deal found 12/18

$960

Fri 4/1012:10 amONT - PUS

1 stop17h 20mChina Airlines

Wed 4/1510:30 amPUS - ONT

1 stop23h 30mChina Airlines

Deal found 12/17

$987

Fri 3/2011:50 pmONT - PUS

1 stop27h 00mChina Airlines

Wed 4/810:30 amPUS - ONT

1 stop23h 30mChina Airlines

Deal found 12/18

$998

Sun 3/2211:50 pmONT - PUS

1 stop19h 00mChina Airlines

Wed 4/810:30 amPUS - ONT

1 stop23h 30mChina Airlines

Deal found 12/18

$998

Thu 1/810:50 pmONT - PUS

1 stop27h 00mChina Airlines

Thu 1/2911:50 amPUS - ONT

1 stop22h 00mChina Airlines

Deal found 12/20

$1,032

Sun 3/2211:50 pmONT - PUS

1 stop19h 00mChina Airlines

Tue 4/710:30 amPUS - ONT

1 stop23h 30mChina Airlines

Deal found 12/18

$1,045

Fri 3/2011:50 pmONT - PUS

1 stop27h 00mChina Airlines

Tue 4/710:30 amPUS - ONT

1 stop23h 30mChina Airlines

Deal found 12/18

$1,068

Thu 3/1911:50 pmONT - PUS

1 stop27h 00mChina Airlines

Mon 3/2311:50 amPUS - ONT

1 stop22h 00mChina Airlines

Deal found 12/18

$1,096

Last-minute flights from Ontario to Busan
Discover last-minute flight deals from Ontario to Busan. Data last updated December 20, 2025 and is based on user searches.

Sun 12/2110:50 pmONT - PUS

1 stop27h 00mChina Airlines

Mon 1/57:50 pmPUS - ONT

1 stop38h 00mChina Airlines

Deal found 12/20

$2,885

Sun 1/410:50 pmONT - PUS

1 stop27h 00mChina Airlines

Thu 1/811:50 amPUS - ONT

1 stop22h 00mChina Airlines

Deal found 12/19

$1,555

Sun 1/411:59 pmONT - PUS

2 stops26h 36mMultiple Airlines

Thu 1/84:10 pmPUS - ONT

2 stops23h 38mMultiple Airlines

Deal found 12/19

$3,110

Thu 1/810:50 pmONT - PUS

1 stop27h 00mChina Airlines

Thu 1/2911:50 amPUS - ONT

1 stop22h 00mChina Airlines

Deal found 12/20

$1,032

Wed 1/2110:50 pmONT - PUS

1 stop27h 00mChina Airlines

Sat 3/77:50 pmPUS - ONT

1 stop38h 00mChina Airlines

Deal found 12/20

$2,381

Fri 1/2310:50 pmONT - PUS

1 stop19h 00mChina Airlines

Mon 1/2611:50 amPUS - ONT

1 stop22h 00mChina Airlines

Deal found 12/19

$1,955

One-way flights from Ontario to Busan
Search for one-way flight options from Ontario to Busan. Find affordable one-way fares based on user searches. Data last updated December 20, 2025.

Sun 4/512:10 amONT - PUS

1 stop26h 50mChina Airlines

Deal found 12/18

$548

Sun 4/512:10 amONT - PUS

3 stops38h 30mMultiple Airlines

Deal found 12/18

$587

Sun 3/2211:50 pmONT - PUS

1 stop19h 00mChina Airlines

Deal found 12/19

$705

Sat 12/2710:50 pmONT - PUS

1 stop19h 00mChina Airlines

Deal found 12/20

$728

Fri 2/2010:50 pmONT - PUS

1 stop19h 00mChina Airlines

Deal found 12/20

$797

Fri 12/2610:50 pmONT - PUS

1 stop27h 00mChina Airlines

Deal found 12/19

$799

Fri 12/2611:59 pmONT - PUS

2 stops26h 36mMultiple Airlines

Deal found 12/19

$1,318

Mon 4/2011:10 pmONT - PUS

1 stop26h 50mMultiple Airlines

Deal found 12/18

$3,711

Mon 3/3011:10 pmONT - PUS

1 stop26h 50mMultiple Airlines

Deal found 12/19

$4,175

Find flight deals from Ontario to Busan

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$926 (oojo)
One-way from	$548 (oojo)
Popular in	June
Cheapest in	September
Average price	$1,779

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 ($249 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($45 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Sun 4/5

12:10 am-9:30 am

1 stop17h 20m

Busan Gimhae

Fri 5/15

12:15 pm-6:00 pm

1 stop21h 45m

$926

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Sat 4/18

12:10 am-7:00 pm

1 stop26h 50m

Busan Gimhae

Sun 4/26

10:30 am-6:00 pm

1 stop23h 30m

$938

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Sun 4/12

12:10 am-9:30 am

1 stop17h 20m

Busan Gimhae

Mon 4/20

12:15 pm-6:00 pm

1 stop21h 45m

$951

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Sat 2/7

10:50 pm-6:50 pm

1 stop27h 00m

Busan Gimhae

Wed 2/25

11:50 am-4:50 pm

1 stop22h 00m

$960

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Mon 3/23

11:50 pm-6:50 pm

1 stop27h 00m

Busan Gimhae

Wed 4/8

10:30 am-6:00 pm

1 stop23h 30m

$960

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Fri 4/10

12:10 am-9:30 am

1 stop17h 20m

Busan Gimhae

Wed 4/15

10:30 am-6:00 pm

1 stop23h 30m

$987

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Fri 3/20

11:50 pm-6:50 pm

1 stop27h 00m

Busan Gimhae

Wed 4/8

10:30 am-6:00 pm

1 stop23h 30m

$998

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Sun 3/22

11:50 pm-10:50 am

1 stop19h 00m

Busan Gimhae

Wed 4/8

10:30 am-6:00 pm

1 stop23h 30m

$998

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Thu 1/8

10:50 pm-6:50 pm

1 stop27h 00m

Busan Gimhae

Thu 1/29

11:50 am-4:50 pm

1 stop22h 00m

$1,032

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Sun 3/22

11:50 pm-10:50 am

1 stop19h 00m

Busan Gimhae

Tue 4/7

10:30 am-6:00 pm

1 stop23h 30m

$1,045

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 22 results

Compare providers for flights from Ontario to Busan

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Busan in December.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Busan flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $680). Flying from Ontario to Busan in June is currently the most expensive (average of $1,397). 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

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, March is the cheapest month in which you can book a flight from Ontario to Busan (average of $680). Flying from Ontario to Busan in June is currently the most expensive (average of $1,397). 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

Alternative routes for Ontario to Busan

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

Las Vegas to Incheon Intl flights

San Jose to Incheon Intl flights

San Diego to Incheon Intl flights

Los Angeles to Busan flights

Sacramento to Incheon Intl flights

Las Vegas to Gimpo Intl flights

San Diego to Gimpo Intl flights

Santa Ana to Incheon Intl flights

Burbank to Incheon Intl flights

Oakland to Incheon Intl flights

Long Beach to Incheon Intl flights

San Jose to Gimpo Intl flights

San Francisco to Gwangju flights

Medford to Incheon Intl flights

Reno to Incheon Intl flights

San Jose to Busan flights

Los Angeles to Jeju City flights

Los Angeles to Daegu flights

Monterey to Incheon Intl flights

Ontario to Gimpo Intl flights

San Francisco to Jeju City flights

Reno to Busan flights

Long Beach to Gimpo Intl flights

San Francisco to Busan flights

Palm Springs to Incheon Intl flights

Las Vegas to Busan flights

San Francisco to Daegu flights

San Diego to Busan flights

Santa Barbara to Incheon Intl flights

San Francisco to Cheongju flights

San Diego to Jeju City flights

San Jose to Jeju City flights

Oakland to Busan flights

Other flights to Busan

Busan to Jeju City flights

Busan to Seoul Gimpo Intl Airport flights

Busan to Cebu City flights

Busan to Fukuoka flights

Busan to Da Nang flights

Busan to Osaka Kansai Intl Airport flights

Busan to Hong Kong flights

Busan to Nha Trang flights

Busan to Taipei City Taiwan Taoyuan Intl Airport flights

Busan to Tokyo Narita Airport flights

Busan to Hanoi flights

Busan to Okinawa flights

Busan to Cebu City flights

Busan to Tamuning flights

Busan to Bangkok Suvarnabhumi Airport flights

Busan to Osaka Kansai Intl Airport flights

Busan to Taipei City Taiwan Taoyuan Intl Airport flights

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.

$548+ 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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Busan with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Busan

Cheapest flights from Ontario to BusanExplore 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 December 20, 2025.

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 December 20, 2025.

Find flight deals from Ontario to Busan

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Busan that are best for you.

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 December.

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.

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?

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?

Can I find deals for flights from Ontario to Busan that include hotel bookings?

How can I find direct flights from Ontario to Busan?

Can I find deals for business class flights from Ontario to Busan?

What is the cheapest month to book a flight from Ontario to Busan?

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.

100% Free

Book with Flexibility

Travel Smart

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 December 20, 2025.