HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$552+ 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 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
PUS — ONT
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Busan to Ontario 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 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 June 12, 2025.

Round-trip from

$921
(Vakatrip)

One-way from

$552
(China Airlines)

Popular in

January

Cheapest in

March

Average price

$828
From Busan Gimhae to Ontario
Search Deals
One-way flight from Busan Gimhae to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($68 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find 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 June 12, 2025.

This Vakatrip deal was found by Cheapflights users on 6/12. 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 Vakatrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/810:20 amPUS - ONT
1 stop24h 20mChina Airlines
Sat 7/1212:45 amONT - PUS
1 stop26h 15mChina Airlines
Deal found 6/12$921
This Korean Air deal was found by Cheapflights users on 6/9. 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.
Mon 11/107:00 amPUS - ONT
2 stops27h 17mKorean Air
Wed 12/36:45 amONT - PUS
2 stops39h 30mKorean Air
Deal found 6/9$1,259
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/211:00 amPUS - ONT
2 stops47h 40mMultiple Airlines
Mon 7/712:45 amONT - PUS
1 stop27h 10mMultiple Airlines
Deal found 6/10$1,373
This Delta deal was found by Cheapflights users on 6/10. 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 7/27:00 amPUS - ONT
2 stops31h 45mDelta
Tue 7/81:15 pmONT - PUS
2 stops37h 05mDelta
Deal found 6/10$1,410

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 June 12, 2025.
Use the filters below to find and compare flights from Busan to Ontario that are best for you.

Fly from

Busan

Fly to

Ontario

Route

Depart

Return

Price

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Tue 7/8

10:20 am-6:40 pm

1 stop24h 20m

Ontario

Sat 7/12

12:45 am-7:00 pm

1 stop26h 15m

$921

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Mon 11/10

7:00 am-5:17 pm

2 stops27h 17m

Ontario

Wed 12/3

6:45 am-3:15 pm

2 stops39h 30m

$1,259

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Wed 7/2

11:00 am-6:40 pm

2 stops47h 40m

Ontario

Mon 7/7

12:45 am-7:55 pm

1 stop27h 10m

$1,373

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Wed 7/2

7:00 am-10:45 pm

2 stops31h 45m

Ontario

Tue 7/8

1:15 pm-6:20 pm

2 stops37h 05m

$1,410

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Tue 12/2

11:50 am-4:50 pm

1 stop22h 00m

$552

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Sun 8/17

10:00 pm-5:40 pm

2 stops35h 40m

$606

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Tue 12/2

3:50 pm-5:17 pm

2 stops18h 27m

$856

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Sun 7/27

7:00 am-10:47 pm

2 stops31h 47m

$1,170

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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, August is the cheapest month in which you can book a flight from Busan to Ontario (average of $246). Flying from Busan to Ontario in March is currently the most expensive (average of $328). 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 Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, 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 December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated June 12, 2025.
Korean Air
8.4
Very good
1,088 reviews

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Korean Air
8.4
Very good
1,088 reviews
Korean Air
8.4
Very good
1,088 reviews

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
China Airlines
8.3
Very good
738 reviews
Korean Air
8.4
Very good
1,088 reviews

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Delta
8.0
Very good
7,946 reviews
Korean Air
8.4
Very good
1,088 reviews

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

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.

  • What are the cheapest airlines to fly from Busan to Ontario one-way?

    To fly one-way, consider booking your trip with China Airlines, which is currently one of the cheapest options available, starting at $552. Korean Air flights start at $856 while deals on Delta start at $1,170 one-way.

  • 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, August is the cheapest month in which you can book a flight from Busan to Ontario (average of $246). Flying from Busan to Ontario in March is currently the most expensive (average of $328). 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 Busan to Ontario

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