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$419+ 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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ICN
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$788
(Kiwi.com)

One-way from

$419
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,161
Provider with most accurate pricing for Los Angeles-Seoul (SEL) flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Seoul (SEL) flights.
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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. 18% potential increase in price ($249 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/118:24 amONT - ICN
1 stop20h 06mMultiple Airlines
Sat 5/246:20 pmICN - ONT
1 stop21h 16mMultiple Airlines
Deal found 4/30$788
This Booking.com deal was found by Cheapflights users on 4/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1212:10 amONT - PUS
1 stop26h 50mChina Airlines
Mon 10/2012:15 pmPUS - ONT
1 stop21h 45mChina Airlines
Deal found 4/29$978
This oojo deal was found by Cheapflights users on 5/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1010:45 pmONT - ICN
1 stop27h 30mChina Airlines
Mon 11/1712:25 pmICN - ONT
1 stop21h 25mChina Airlines
Deal found 5/1$1,004
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/307:22 pmONT - ICN
2 stops31h 38mAlaska Airlines
Mon 9/89:25 pmICN - ONT
2 stops29h 19mAlaska Airlines
Deal found 4/30$1,110
This Hawaiian Airlines deal was found by Cheapflights users on 4/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/179:50 amONT - ICN
1 stop17h 10mHawaiian Airlines
Sat 5/249:25 pmICN - ONT
1 stop16h 30mHawaiian Airlines
Deal found 4/30$1,306
This ScholarTrip deal was found by Cheapflights users on 4/30. 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 ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/277:00 amONT - ICN
1 stop17h 40mKorean Air
Wed 1/74:10 pmICN - ONT
1 stop18h 05mKorean Air
Deal found 4/30$1,336
This oojo deal was found by Cheapflights users on 4/30. 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.
Fri 9/511:00 pmONT - ICN
2 stops55h 05mEtihad Airways
Thu 9/185:45 pmICN - ONT
2 stops43h 56mEtihad Airways
Deal found 4/30$1,349
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:00 amONT - ICN
1 stop17h 30mDelta
Tue 10/147:20 pmICN - ONT
2 stops20h 26mDelta
Deal found 4/30$1,380
This Travelocity deal was found by Cheapflights users on 4/28. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:00 amONT - PUS
2 stops21h 35mMultiple Airlines
Sat 9/2012:15 pmPUS - ONT
1 stop21h 45mMultiple Airlines
Deal found 4/28$1,428
This United Airlines deal was found by Cheapflights users on 4/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/206:30 pmONT - ICN
1 stop17h 50mUnited Airlines
Tue 11/412:45 pmICN - ONT
1 stop17h 25mUnited Airlines
Deal found 4/30$1,476
This WestJet deal was found by Cheapflights users on 4/30. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/711:44 amONT - ICN
2 stops63h 01mWestJet
Sun 6/158:45 pmICN - ONT
2 stops36h 25mWestJet
Deal found 4/30$1,481
This Delta deal was found by Cheapflights users on 4/28. 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.
Thu 9/116:00 amONT - PUS
2 stops20h 20mDelta
Sat 9/208:05 amPUS - ONT
2 stops30h 37mDelta
Deal found 4/28$1,533

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 May 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

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sun 5/11

8:24 am-8:30 pm

1 stop20h 06m

Incheon Intl

Sat 5/24

6:20 pm-11:36 pm

1 stop21h 16m

$788

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Sun 10/12

12:10 am-7:00 pm

1 stop26h 50m

Busan Gimhae

Mon 10/20

12:15 pm-6:00 pm

1 stop21h 45m

$978

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 10/13

12:10 am-7:35 pm

1 stop27h 25m

Incheon Intl

Tue 10/28

12:25 pm-5:50 pm

1 stop21h 25m

$1,004

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sat 8/30

7:22 pm-7:00 pm

2 stops31h 38m

Incheon Intl

Wed 9/10

9:25 pm-10:44 am

2 stops29h 19m

$1,110

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sat 5/17

9:50 am-7:00 pm

1 stop17h 10m

Incheon Intl

Sat 5/24

9:25 pm-9:55 pm

1 stop16h 30m

$1,306

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 8/27

7:00 am-4:40 pm

1 stop17h 40m

Incheon Intl

Wed 1/7

4:10 pm-5:15 pm

1 stop18h 05m

$1,336

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Fri 9/5

11:00 pm-10:05 pm

2 stops55h 05m

Incheon Intl

Thu 9/18

5:45 pm-9:41 pm

2 stops43h 56m

$1,349

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Thu 10/2

7:00 am-4:30 pm

1 stop17h 30m

Incheon Intl

Tue 10/14

7:20 pm-11:46 pm

2 stops20h 26m

$1,380

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Thu 9/11

6:00 am-7:35 pm

2 stops21h 35m

Busan Gimhae

Sat 9/20

12:15 pm-6:00 pm

1 stop21h 45m

$1,428

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 10/20

6:30 pm-4:20 am

1 stop17h 50m

Incheon Intl

Tue 11/4

12:45 pm-1:10 pm

1 stop17h 25m

$1,476

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 38 results
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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 $1,001). 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 May 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.

Rainfall in South Korea by month

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

In terms of precipitation, rainfall in South Korea ranges from 0.8 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit South Korea when rainfall is around 0.8 in.

Temperature in South Korea by month

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

If weather is an important factor for your trip to South Korea, 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 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

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 May 1, 2025.
Get a feel of what it's like to fly with EVA Air, Korean Air and Japan Airlines from Ontario to South Korea by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
EVA Air
8.4
Very good
1,186 reviews
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Korean Air
8.4
Very good
1,068 reviews
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Japan Airlines
8.3
Very good
1,464 reviews
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
China Airlines
8.3
Very good
732 reviews
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Delta
8.0
Very good
7,934 reviews
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

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 WestJet ($560), Alaska Airlines ($595), and China Airlines ($613).

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

    While some choose either Ontario - Busan Gimhae or Ontario - Seoul Gimpo Intl, 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 $1,001). 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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Alternative routes for Ontario to South Korea

See prices for flight routes from nearby airports that may be better suited for you.
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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$961Average$1,070FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$1,111Average$1,230FlexibilityNo cancel feeOn-time81%

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