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$409+ 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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ICN
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$884
(Trip.com)

One-way from

$409
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$875
Provider with most accurate pricing for Los Angeles-Seoul (SEL) flight deals.
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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. 2% potential price decrease ($33 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 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 February 20, 2025.

This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/38:26 amONT - ICN
1 stop19h 04mMultiple Airlines
Wed 3/126:55 pmICN - ONT
2 stops28h 31mMultiple Airlines
Deal found 2/20$884
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/912:10 amONT - ICN
1 stop27h 25mChina Airlines
Mon 4/2112:35 pmICN - ONT
1 stop21h 25mChina Airlines
Deal found 2/20$991
This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/39:45 amONT - ICN
1 stop40h 40mHawaiian Airlines
Fri 3/79:25 pmICN - ONT
1 stop17h 25mHawaiian Airlines
Deal found 2/20$1,024
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/210:45 pmONT - PUS
1 stop27h 00mChina Airlines
Wed 3/511:55 amPUS - ONT
1 stop21h 55mChina Airlines
Deal found 2/19$1,035
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.
Thu 3/610:45 pmONT - PUS
1 stop28h 20mMultiple Airlines
Wed 3/1911:55 amPUS - ONT
1 stop21h 55mMultiple Airlines
Deal found 2/19$1,269
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1312:10 amONT - CJU
2 stops30h 25mMultiple Airlines
Fri 4/187:30 amCJU - ONT
2 stops26h 30mMultiple Airlines
Deal found 2/20$1,302
This WestJet 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/811:42 amONT - ICN
2 stops39h 03mWestJet
Sun 6/88:45 pmICN - ONT
2 stops36h 37mWestJet
Deal found 2/20$1,314
This ScholarTrip 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 ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/246:00 amONT - ICN
1 stop16h 55mKorean Air
Mon 3/244:10 pmICN - ONT
1 stop16h 32mKorean Air
Deal found 2/20$1,336
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/15:40 amONT - ICN
1 stop19h 00mDelta
Mon 4/217:20 pmICN - ONT
1 stop19h 22mDelta
Deal found 2/20$1,376
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.
Sun 8/245:05 pmONT - PUS
2 stops33h 15mDelta
Sun 8/314:30 pmPUS - ONT
2 stops40h 52mDelta
Deal found 2/19$1,491
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/165:45 amONT - TAE
2 stops22h 50mKorean Air
Sun 4/277:35 amTAE - ONT
2 stops25h 08mKorean Air
Deal found 2/20$1,540
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/16:00 amONT - GMP
2 stops37h 05mMultiple Airlines
Sat 9/63:50 pmGMP - ONT
2 stops22h 47mMultiple Airlines
Deal found 2/20$1,704

Find flights from Ontario to South Korea within your budget

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 February 20, 2025.

Fly from

Ontario

Fly to

South Korea

Route

Depart

Return

Price

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 3/3

8:26 am-8:30 pm

1 stop19h 04m

Incheon Intl

Wed 3/12

6:55 pm-7:26 am

2 stops28h 31m

$884

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 4/9

12:10 am-7:35 pm

1 stop27h 25m

Incheon Intl

Mon 4/21

12:35 pm-6:00 pm

1 stop21h 25m

$991

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 3/3

9:45 am-7:25 pm

1 stop40h 40m

Incheon Intl

Fri 3/7

9:25 pm-9:50 pm

1 stop17h 25m

$1,024

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Sun 3/2

10:45 pm-6:45 pm

1 stop27h 00m

Busan Gimhae

Wed 3/5

11:55 am-4:50 pm

1 stop21h 55m

$1,035

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Thu 3/6

10:45 pm-8:05 pm

1 stop28h 20m

Busan Gimhae

Wed 3/19

11:55 am-5:50 pm

1 stop21h 55m

$1,269

OntarioJeju City

ONT - CJU

ONTCJU

Ontario

Sun 4/13

12:10 am-10:35 pm

2 stops30h 25m

Jeju City

Fri 4/18

7:30 am-6:00 pm

2 stops26h 30m

$1,302

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Tue 4/8

11:42 am-6:45 pm

2 stops39h 03m

Incheon Intl

Sun 6/8

8:45 pm-5:22 pm

2 stops36h 37m

$1,314

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Thu 4/10

5:40 am-4:30 pm

1 stop18h 50m

Incheon Intl

Mon 4/21

4:40 pm-4:43 pm

1 stop16h 03m

$1,361

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Tue 4/1

5:40 am-4:40 pm

1 stop19h 00m

Incheon Intl

Mon 4/21

7:20 pm-10:42 pm

1 stop19h 22m

$1,376

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 3/10

6:00 am-3:15 pm

1 stop17h 15m

Incheon Intl

Mon 3/24

11:45 am-9:54 am

1 stop14h 09m

$1,464

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 32 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.

Travel insights for flights from Ontario to South Korea

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

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 $1,036). Flying from Ontario to South Korea in June is currently the most expensive (average of $1,697). 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 February 20, 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 February 20, 2025.
Get a feel of what it's like to fly with Korean Air, Japan Airlines and China 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.
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

10.0
Excellent

Anonymous,Dec 2024

DFW - ICN

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

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

10.0
Excellent

Anonymous,Dec 2024

DFW - ICN

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

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

10.0
Excellent

Anonymous,Dec 2024

DFW - ICN

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

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

10.0
Excellent

Anonymous,Dec 2024

DFW - ICN

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

Delta
8.0
Very good
8,220 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

10.0
Excellent

Anonymous,Dec 2024

DFW - ICN

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

Hawaiian Airlines
7.9
Good
2,317 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

10.0
Excellent

Anonymous,Dec 2024

DFW - ICN

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

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 Hawaiian Airlines ($546), WestJet ($581), and China Airlines ($585).

  • 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 $1,036). Flying from Ontario to South Korea in June is currently the most expensive (average of $1,697). 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$961Average$1,076FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$1,111Average$1,199FlexibilityNo cancel feeOn-time81%
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