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Ontario

$433+ Cheap flights from South Korea 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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — ONT
Feb 26 — Mrz 51
Mi 2/26
Mi 3/5
1 adult, Economy
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Cheap flight deals from South Korea to Ontario

Keep the following information in mind while searching for South Korea to Ontario flight deals. Data was last updated Februar 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$590
(Trip.com)

One-way from

$433
(United Airlines)

Popular in

August

Cheapest in

February

Average price

$708
Provider with most accurate pricing for Seoul (SEL)-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Seoul (SEL)-Los Angeles flights.
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From South Korea to Ontario
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One-way flight from South Korea to Ontario
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($194 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 February 2025
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Find flight deals from South Korea to Ontario

Cheapest flights from South Korea to Ontario
Explore the most affordable flight options available from South Korea to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on Februar 21, 2025.

This Trip.com deal was found by Cheapflights users on 2/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
So 3/26:55 pmICN - ONT
1 stop31h 39mMultiple Airlines
Fr 3/78:26 amONT - ICN
1 stop19h 04mMultiple Airlines
Deal found 2/19$590
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Do 3/66:00 pmICN - ONT
1 stop21h 45mUnited Airlines
Fr 3/216:00 amONT - ICN
1 stop17h 15mUnited Airlines
Deal found 2/20$697
This Gotogate deal was found by Cheapflights users on 2/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/38:35 pmICN - ONT
1 stop37h 25mChina Airlines
Mo 5/512:10 amONT - ICN
1 stop27h 25mChina Airlines
Deal found 2/19$803
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 3/66:50 pmICN - ONT
2 stops20h 10mAmerican Airlines
Mo 3/1011:59 pmONT - ICN
1 stop23h 56mAmerican Airlines
Deal found 2/20$854
This hutchgo.com deal was found by Cheapflights users on 2/20. 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 hutchgo.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 5/219:25 pmICN - ONT
1 stop16h 30mHawaiian Airlines
So 5/259:50 amONT - ICN
1 stop17h 10mHawaiian Airlines
Deal found 2/20$964
This Gotogate deal was found by Cheapflights users on 2/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 3/1811:55 amPUS - ONT
1 stop21h 55mChina Airlines
Mo 3/3112:10 amONT - PUS
1 stop19h 05mChina Airlines
Deal found 2/20$1,037
This Delta deal was found by Cheapflights users on 2/19. 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.
Di 3/188:05 pmICN - ONT
1 stop30h 57mDelta
Di 4/295:45 amONT - ICN
1 stop18h 45mDelta
Deal found 2/19$1,079
This Onlinetour deal was found by Cheapflights users on 2/19. 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 Onlinetour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 4/254:40 pmICN - ONT
1 stop16h 03mKorean Air
Mo 7/217:00 amONT - ICN
1 stop17h 40mKorean Air
Deal found 2/19$1,155
This WestJet deal was found by Cheapflights users on 2/19. 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.
Di 3/186:25 pmICN - ONT
2 stops38h 17mWestJet
Di 4/2911:45 amONT - ICN
2 stops63h 00mWestJet
Deal found 2/19$1,344
This Air Canada deal was found by Cheapflights users on 2/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 2/274:55 pmICN - ONT
2 stops44h 45mAir Canada
Di 3/116:00 amONT - ICN
2 stops41h 25mAir Canada
Deal found 2/20$1,693
This Ovago deal was found by Cheapflights users on 2/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 3/189:25 amPUS - ONT
2 stops28h 02mJapan Airlines
Di 4/16:00 amONT - PUS
2 stops23h 35mJapan Airlines
Deal found 2/20$3,167

Find flights from South Korea to Ontario within your budget

Customize your flight search to find flights from South Korea 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 Februar 21, 2025.

Fly from

South Korea

Fly to

Ontario

Route

Depart

Return

Price

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

So 3/2

6:55 pm-9:34 am

1 stop31h 39m

Ontario

Fr 3/7

8:26 am-8:30 pm

1 stop19h 04m

$590

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Do 3/6

6:00 pm-10:45 pm

1 stop21h 45m

Ontario

Fr 3/21

6:00 am-3:15 pm

1 stop17h 15m

$697

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Sa 5/3

8:35 pm-6:00 pm

1 stop37h 25m

Ontario

Mo 5/5

12:10 am-7:35 pm

1 stop27h 25m

$803

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Do 3/6

6:50 pm-10:00 pm

2 stops20h 10m

Ontario

Mo 3/10

11:59 pm-3:55 pm

1 stop23h 56m

$854

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mi 5/21

9:25 pm-9:55 pm

1 stop16h 30m

Ontario

So 5/25

9:50 am-7:00 pm

1 stop17h 10m

$964

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

Di 3/18

11:55 am-5:50 pm

1 stop21h 55m

Ontario

Mo 3/31

12:10 am-11:15 am

1 stop19h 05m

$1,037

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Di 3/18

8:05 pm-11:02 am

1 stop30h 57m

Ontario

Di 4/29

5:45 am-4:30 pm

1 stop18h 45m

$1,079

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Fr 4/25

4:40 pm-4:43 pm

1 stop16h 03m

Ontario

Mo 7/21

7:00 am-4:40 pm

1 stop17h 40m

$1,155

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Di 3/18

6:25 pm-4:42 pm

2 stops38h 17m

Ontario

Di 4/29

11:45 am-6:45 pm

2 stops63h 00m

$1,344

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mi 3/5

12:20 am-11:24 pm

2 stops40h 04m

Ontario

Do 3/13

11:57 am-5:15 pm

2 stops37h 18m

$1,995

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 26 results
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Best time to book a flight from South Korea to Ontario

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

Travel insights for flights from South Korea to Ontario

Get recent, data-driven insights about flights from South Korea to Ontario including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from South Korea to Ontario (average of $246). Flying from South Korea to Ontario in March is currently the most expensive (average of $315). 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 KR to ONT?

Find hourly flight availability from South Korea to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated Februar 21, 2025.

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

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 Februar 21, 2025.
See what other customers who have flown with Korean Air, Japan Airlines and China Airlines from South Korea to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,037 reviews

Comfort

8.3

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Korean Air
8.4
Very good
1,037 reviews
Korean Air
8.4
Very good
1,037 reviews

Comfort

8.3

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Japan Airlines
8.3
Very good
1,440 reviews
Korean Air
8.4
Very good
1,037 reviews

Comfort

8.3

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

China Airlines
8.2
Very good
727 reviews
Korean Air
8.4
Very good
1,037 reviews

Comfort

8.3

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Delta
8.0
Very good
8,213 reviews
Korean Air
8.4
Very good
1,037 reviews

Comfort

8.3

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Hawaiian Airlines
7.9
Good
2,316 reviews
Korean Air
8.4
Very good
1,037 reviews

Comfort

8.3

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Entertainment

8.2

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Related info for your journey

Find useful and relevant information for your journey from South Korea to Ontario. 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 into for flights to Ontario from South Korea?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from South Korea. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

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

    The cheapest airlines for a one-way flight from South Korea to Ontario are United Airlines ($433), China Airlines ($541), and WestJet ($569).

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

    Most travelers choose Incheon Intl - Ontario, Busan Gimhae - Ontario or Seoul Gimpo Intl - Ontario when deciding on the best route from South Korea to Ontario.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from South Korea to Ontario (average of $246). Flying from South Korea to Ontario in March is currently the most expensive (average of $315). 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 South Korea to Ontario

Discover the top 2 airlines that operate flights from South Korea to Ontario. 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 Februar 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$674Average$784FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$978Average$1,146FlexibilityNo cancel feeOn-time70%
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