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$467+ Cheap flights from Ontario (ONT) to South Korea

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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ICN
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
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Cheap flight deals from Ontario to South Korea

Keep the following information in mind while searching for Ontario to South Korea flight deals. Data was last updated July 1, 2025.

Round-trip from

$932
(oojo)

One-way from

$467
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,207
From Ontario to South Korea
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One-way flight from Ontario to South Korea
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Highest demand for flights based on searches. 4% potential increase in price ($42 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Ontario to South Korea

Cheapest flights from Ontario to South Korea
Explore the most affordable flight options available from Ontario to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

This oojo deal was found by Cheapflights users on 6/30. 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 8/2812:45 amONT - PUS
1 stop18h 30mChina Airlines
Sat 9/610:20 amPUS - ONT
1 stop24h 20mChina Airlines
Deal found 6/30$932
This oojo deal was found by Cheapflights users on 6/29. 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.
Wed 10/1512:10 amONT - ICN
1 stop27h 25mChina Airlines
Fri 10/3112:25 pmICN - ONT
1 stop21h 25mChina Airlines
Deal found 6/29$933
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Fri 8/159:41 pmONT - ICN
2 stops31h 54mMultiple Airlines
Fri 8/226:20 pmICN - ONT
1 stop21h 20mMultiple Airlines
Deal found 7/1$1,004
This Mytrip deal was found by Cheapflights users on 7/1. 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.
Fri 10/2412:10 amONT - PUS
1 stop27h 50mMultiple Airlines
Sun 11/97:55 amPUS - ONT
2 stops25h 55mMultiple Airlines
Deal found 7/1$1,250
This Mytrip deal was found by Cheapflights users on 6/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1212:45 amONT - CJU
1 stop17h 00mMultiple Airlines
Wed 8/2010:30 amCJU - ONT
1 stop24h 10mMultiple Airlines
Deal found 6/29$1,268
This EVA Air deal was found by Cheapflights users on 6/30. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/176:58 pmONT - GMP
2 stops31h 12mMultiple Airlines
Wed 9/38:20 pmGMP - ONT
2 stops37h 17mMultiple Airlines
Deal found 6/30$1,277
This Gurufare deal was found by Cheapflights users on 6/30. 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.
Tue 10/216:00 amONT - GMP
2 stops23h 50mJapan Airlines
Tue 10/287:50 amGMP - ONT
2 stops23h 24mJapan Airlines
Deal found 6/30$1,424

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to South Korea 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 July 1, 2025.
Use the filters below to find and compare flights from Ontario to South Korea that are best for you.

Fly from

Ontario

Fly to

South Korea

Route

Depart

Return

Price

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Thu 8/28

12:45 am-11:15 am

1 stop18h 30m

Busan Gimhae

Sat 9/6

10:20 am-6:40 pm

1 stop24h 20m

$932

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 10/15

12:10 am-7:35 pm

1 stop27h 25m

Incheon Intl

Fri 10/31

12:25 pm-5:50 pm

1 stop21h 25m

$933

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Fri 8/15

9:41 pm-9:35 pm

2 stops31h 54m

Incheon Intl

Fri 8/22

6:20 pm-11:40 pm

1 stop21h 20m

$1,004

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Fri 10/24

12:10 am-8:00 pm

1 stop27h 50m

Busan Gimhae

Sun 11/9

7:55 am-4:50 pm

2 stops25h 55m

$1,250

OntarioJeju City

ONT - CJU

ONTCJU

Ontario

Tue 8/12

12:45 am-9:45 am

1 stop17h 00m

Jeju City

Wed 8/20

10:30 am-6:40 pm

1 stop24h 10m

$1,268

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Sun 8/17

6:58 pm-6:10 pm

2 stops31h 12m

Seoul Gimpo Intl

Wed 9/3

8:20 pm-5:37 pm

2 stops37h 17m

$1,277

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Tue 10/21

6:00 am-9:50 pm

2 stops23h 50m

Seoul Gimpo Intl

Tue 10/28

7:50 am-3:14 pm

2 stops23h 24m

$1,424

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Fri 8/8

9:41 pm-8:30 pm

1 stop30h 49m

$467

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 9/15

12:10 am-7:35 pm

1 stop27h 25m

$541

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Fri 8/15

12:45 am-7:00 pm

1 stop26h 15m

$560

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 18 results
1
2

Best time to book a flight from Ontario to South Korea

Have a flexible travel schedule? Discover the best time to fly to South Korea 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 South Korea

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

Currently, February is the cheapest month in which you can book a flight from Ontario to South Korea (average of $998). Flying from Ontario to South Korea in December is currently the most expensive (average of $1,635). 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.

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

Find hourly flight availability from Ontario to South Korea. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 1, 2025.

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

Reviews of airlines servicing South Korea

Get insights into the airlines that provide service to South Korea. 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 South Korea. Reviews last updated July 1, 2025.
Read through reviews of airlines operating flights from Ontario to South Korea, such as EVA Air, Korean Air, and Japan Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,212 reviews

Crew

8.6

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,212 reviews
EVA Air
8.4
Very good
1,212 reviews

Crew

8.6

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,101 reviews
EVA Air
8.4
Very good
1,212 reviews

Crew

8.6

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Japan Airlines
8.3
Very good
1,504 reviews
EVA Air
8.4
Very good
1,212 reviews

Crew

8.6

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
China Airlines
8.3
Very good
747 reviews
EVA Air
8.4
Very good
1,212 reviews

Crew

8.6

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Alaska Airlines
8.0
Very good
10,000 reviews
EVA Air
8.4
Very good
1,212 reviews

Crew

8.6

Entertainment

8.0

Boarding

8.4

Food

8.1

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Related info for your journey

Find useful and relevant information for your journey from Ontario to South Korea. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to South Korea?

    If you book a flight to South Korea from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

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

    The cheapest airlines for a one-way flight from Ontario to South Korea are China Airlines ($541), Hawaiian Airlines ($595), and Alaska Airlines ($622).

  • What are the most popular routes from Ontario to South Korea?

    While some choose either Ontario - Seoul Gimpo Intl or Ontario - Busan Gimhae, Ontario - Incheon Intl is the most popular route from Ontario to South Korea.

  • Can I find deals for flights from Ontario to South Korea that include hotel bookings?

    Yes. In addition to deals on Ontario to South Korea flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to South Korea?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to South Korea.

  • Can I find deals for business class flights from Ontario to South Korea?

    Yes. Cheapflights offers flight deals from Ontario to South Korea 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 South Korea?

    Currently, February is the cheapest month in which you can book a flight from Ontario to South Korea (average of $998). Flying from Ontario to South Korea in December is currently the most expensive (average of $1,635). 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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Top 2 airlines flying from Ontario to South Korea

Discover the top 2 airlines that operate flights from Ontario to South Korea. 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 July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$961Average$1,079FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$1,111Average$1,257FlexibilityNo cancel feeOn-time81%

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