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Ontario

$296+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — ONT
avr. 22 — avr. 291
mar. 4/22
mar. 4/29
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 avril 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$516
(United Airlines)

One-way from

$296
(Trip.com)

Popular in

August

Cheapest in

February

Average price

$769
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
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Highest demand for flights based on searches. 18% potential increase in price ($202 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in April 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 avril 17, 2025.

This United Airlines deal was found by Cheapflights users on 4/16. 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.
sam. 4/1911:30 amICN - ONT
2 stops25h 12mUnited Airlines
ven. 7/185:05 amONT - ICN
2 stops31h 15mUnited Airlines
Deal found 4/16$516
This Gotogate deal was found by Cheapflights users on 4/16. 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.
mer. 5/712:35 pmICN - ONT
1 stop21h 25mChina Airlines
sam. 5/1012:10 amONT - ICN
1 stop27h 25mChina Airlines
Deal found 4/16$860
This Alaska Airlines deal was found by Cheapflights users on 4/16. 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.
mer. 8/139:25 pmICN - ONT
2 stops29h 40mAlaska Airlines
jeu. 8/218:35 amONT - ICN
1 stop18h 25mAlaska Airlines
Deal found 4/16$965
This Mytrip deal was found by Cheapflights users on 4/16. 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.
ven. 5/168:20 amICN - ONT
2 stops25h 40mMultiple Airlines
lun. 5/1912:10 amONT - ICN
2 stops31h 35mMultiple Airlines
Deal found 4/16$987
This Delta deal was found by Cheapflights users on 4/17. 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.
mer. 6/47:20 pmICN - ONT
2 stops29h 51mDelta
mar. 10/281:00 pmONT - ICN
2 stops35h 40mDelta
Deal found 4/17$1,072
This Hawaiian Airlines deal was found by Cheapflights users on 4/16. 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.
sam. 4/199:25 pmICN - ONT
1 stop16h 25mHawaiian Airlines
ven. 7/189:00 amONT - ICN
1 stop18h 00mHawaiian Airlines
Deal found 4/16$1,172
This WestJet deal was found by Cheapflights users on 4/17. 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.
jeu. 5/298:45 pmICN - ONT
2 stops41h 50mWestJet
mar. 6/176:30 amONT - ICN
2 stops44h 15mWestJet
Deal found 4/17$1,174
This Korean Air deal was found by Cheapflights users on 4/17. 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.
dim. 6/14:40 pmICN - ONT
1 stop17h 40mKorean Air
jeu. 6/196:00 amONT - ICN
1 stop17h 20mKorean Air
Deal found 4/17$1,196
This Gotogate deal was found by Cheapflights users on 4/16. 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.
sam. 5/3110:20 amPUS - ONT
1 stop23h 40mChina Airlines
ven. 6/612:10 amONT - PUS
1 stop19h 05mChina Airlines
Deal found 4/16$1,206
This Mytrip deal was found by Cheapflights users on 4/16. 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.
lun. 5/510:00 pmPUS - ONT
1 stop36h 00mMultiple Airlines
dim. 5/1812:10 amONT - PUS
1 stop27h 45mMultiple Airlines
Deal found 4/16$1,299
This Delta deal was found by Cheapflights users on 4/16. 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.
sam. 5/3110:40 amPUS - ONT
2 stops23h 40mDelta
sam. 6/77:05 pmONT - PUS
2 stops32h 30mDelta
Deal found 4/16$1,300
This Korean Air deal was found by Cheapflights users on 4/17. 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.
sam. 10/47:00 amPUS - ONT
2 stops26h 17mKorean Air
sam. 10/117:00 amONT - PUS
2 stops21h 35mKorean Air
Deal found 4/17$2,450

Cheapflights Fare Finder

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 avril 17, 2025.
Use the filters below to find and compare flights from South Korea to Ontario that are best for you.

Fly from

South Korea

Fly to

Ontario

Route

Depart

Return

Price

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

mer. 5/7

11:30 am-3:09 pm

2 stops19h 39m

Ontario

dim. 5/11

4:15 pm-3:00 pm

2 stops30h 45m

$516

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

mer. 5/7

12:35 pm-6:00 pm

1 stop21h 25m

Ontario

sam. 5/10

12:10 am-7:35 pm

1 stop27h 25m

$860

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

mer. 8/13

9:25 pm-11:05 am

2 stops29h 40m

Ontario

jeu. 8/21

8:35 am-7:00 pm

1 stop18h 25m

$965

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

ven. 5/16

8:20 am-6:00 pm

2 stops25h 40m

Ontario

lun. 5/19

12:10 am-11:45 pm

2 stops31h 35m

$987

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

mer. 6/4

7:20 pm-9:11 am

2 stops29h 51m

Ontario

mar. 10/28

1:00 pm-4:40 pm

2 stops35h 40m

$1,072

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

lun. 5/26

7:20 pm-6:20 pm

1 stop15h 00m

Ontario

jeu. 6/19

6:00 am-3:20 pm

1 stop17h 20m

$1,143

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

jeu. 5/29

8:45 pm-10:35 pm

2 stops41h 50m

Ontario

mar. 6/17

6:30 am-6:45 pm

2 stops44h 15m

$1,174

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

sam. 5/31

10:20 am-6:00 pm

1 stop23h 40m

Ontario

ven. 6/6

12:10 am-11:15 am

1 stop19h 05m

$1,206

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

ven. 5/16

9:25 pm-9:55 pm

1 stop16h 30m

Ontario

ven. 5/23

9:50 am-7:00 pm

1 stop17h 10m

$1,224

BusanOntario

PUS - ONT

PUSONT

Busan Gimhae

lun. 5/5

10:00 pm-6:00 pm

1 stop36h 00m

Ontario

dim. 5/18

12:10 am-7:55 pm

1 stop27h 45m

$1,299

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

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.

Cheapflights Insights

Everything you need to know about your flight from South Korea to Ontario

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 $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.

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 avril 17, 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 avril 17, 2025.
See what other customers who have flown with EVA Air, Korean Air and Japan 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.
EVA Air
8.4
Very good
1,177 reviews

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.
EVA Air
8.4
Very good
1,177 reviews
EVA Air
8.4
Very good
1,177 reviews

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.
Korean Air
8.4
Very good
1,064 reviews
EVA Air
8.4
Very good
1,177 reviews

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.
Japan Airlines
8.3
Very good
1,443 reviews
EVA Air
8.4
Very good
1,177 reviews

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.
China Airlines
8.2
Very good
729 reviews
EVA Air
8.4
Very good
1,177 reviews

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.
Alaska Airlines
8.0
Very good
9,887 reviews
EVA Air
8.4
Very good
1,177 reviews

Overall

8.4

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

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 WestJet ($540), China Airlines ($545), and Hawaiian Airlines ($581).

  • 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 $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

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Alternative routes for South Korea to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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 avril 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$596Average$755FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$978Average$1,146FlexibilityNo cancel feeOn-time70%

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