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$513+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ICN
May 28 — Jun 41
Thu 5/28
Thu 6/4
1 adult, Economy
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Cheap 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 April 28, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Mon 5/117:59 pm
ONT
-
ICN
2 stops33h 41m
Multiple Airlines
Fri 5/297:35 pm
ICN
-
ONT
1 stop35h 00m
Multiple Airlines
Deal found 4/26$1,004
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
Sat 5/304:04 pm
ONT
-
ICN
2 stops37h 36m
Multiple Airlines
Sat 6/136:00 pm
ICN
-
ONT
1 stop33h 13m
Multiple Airlines
Deal found 4/25$1,125
This Super.com deal was found by Cheapflights users on 4/23. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:45 am
ONT
-
ICN
1 stop18h 45m
China Airlines
Mon 9/2112:35 pm
ICN
-
ONT
1 stop21h 25m
China Airlines
Deal found 4/23$1,136
This Alaska Airlines deal was found by Cheapflights users on 4/24. 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.
Wed 5/66:00 am
ONT
-
ICN
1 stop19h 30m
Alaska Airlines
Wed 5/137:35 pm
ICN
-
ONT
1 stop20h 23m
Alaska Airlines
Deal found 4/24$1,141
This Alaska Airlines deal was found by Cheapflights users on 4/23. 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.
Wed 4/296:00 am
ONT
-
ICN
1 stop19h 30m
Alaska Airlines
Mon 5/117:35 pm
ICN
-
ONT
1 stop15h 30m
Alaska Airlines
Deal found 4/23$1,142
This Vliegwinkel deal was found by Cheapflights users on 4/27. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:59 pm
ONT
-
ICN
1 stop29h 31m
Alaska Airlines
Wed 5/137:35 pm
ICN
-
ONT
1 stop15h 12m
Alaska Airlines
Deal found 4/27$1,145
This Alaska Airlines deal was found by Cheapflights users on 4/23. 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.
Sun 5/37:59 pm
ONT
-
ICN
1 stop29h 31m
Alaska Airlines
Wed 5/137:35 pm
ICN
-
ONT
1 stop15h 12m
Alaska Airlines
Deal found 4/23$1,149
This SmartFares deal was found by Cheapflights users on 4/27. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3112:45 am
ONT
-
ICN
1 stop26h 20m
China Airlines
Sun 9/138:05 pm
ICN
-
ONT
1 stop38h 35m
China Airlines
Deal found 4/27$1,151
This oojo deal was found by Cheapflights users on 4/22. 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.
Sat 8/2212:45 am
ONT
-
ICN
1 stop18h 45m
China Airlines
Sun 9/68:05 pm
ICN
-
ONT
1 stop38h 35m
China Airlines
Deal found 4/22$1,152
This Super.com deal was found by Cheapflights users on 4/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/812:45 am
ONT
-
ICN
1 stop18h 45m
China Airlines
Mon 9/2112:35 pm
ICN
-
ONT
1 stop21h 25m
China Airlines
Deal found 4/27$1,157
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
Wed 5/278:59 am
ONT
-
ICN
2 stops44h 41m
Multiple Airlines
Sat 6/136:00 pm
ICN
-
ONT
1 stop33h 13m
Multiple Airlines
Deal found 4/25$1,170
This Justfly.com deal was found by Cheapflights users on 4/26. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:45 am
ONT
-
PUS
1 stop18h 30m
China Airlines
Fri 9/1812:15 pm
PUS
-
ONT
1 stop21h 45m
China Airlines
Deal found 4/26$1,236

Find 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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,004
(Kiwi.com)

One-way from

$513
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$900
Provider with most accurate pricing for Los Angeles-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Seoul (SEL) flights.
Search Deals
From Ontario to South Korea
Search Deals
One-way flight from Ontario to South Korea
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 28, 2026.
Use the filters below to find and compare flights from Ontario to South Korea that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 9/23

12:10 pm-10:30 am

2 stops30h 20m

Incheon Intl

Tue 10/20

1:20 am-6:13 pm

2 stops32h 53m

$1,221

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 7/8

6:00 am-3:00 pm

1 stop17h 00m

Incheon Intl

Wed 7/15

11:30 am-12:12 pm

1 stop16h 42m

$1,241

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 5/13

6:59 pm-4:20 am

1 stop17h 21m

Incheon Intl

Wed 5/27

4:50 pm-5:56 pm

1 stop17h 06m

$1,241

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Thu 5/7

12:10 am-7:55 pm

1 stop27h 45m

Busan Gimhae

Mon 5/18

10:50 am-6:00 pm

1 stop23h 10m

$1,287

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sun 7/5

6:39 pm-4:20 am

1 stop17h 41m

Incheon Intl

Wed 7/15

11:30 am-12:12 pm

1 stop16h 42m

$1,291
Quickest round-trip

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 9/21

7:13 pm-4:20 am

1 stop17h 07m

Incheon Intl

Sat 10/10

11:30 am-10:03 am

1 stop14h 33m

$1,291

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sun 7/12

6:00 am-3:00 pm

1 stop17h 00m

Incheon Intl

Mon 8/17

4:50 pm-10:58 pm

1 stop22h 08m

$1,292

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Tue 9/1

5:00 am-4:20 am

2 stops31h 20m

Incheon Intl

Sun 9/20

4:50 pm-10:58 pm

1 stop22h 08m

$1,296

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sun 7/5

6:00 am-3:00 pm

1 stop17h 00m

Incheon Intl

Sat 7/11

4:50 pm-12:12 pm

1 stop35h 22m

$1,348

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sat 5/9

1:30 pm-3:00 pm

1 stop33h 30m

Incheon Intl

Sat 5/23

4:50 pm-10:50 pm

1 stop22h 00m

$1,348

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/26

Showing 1-10 of 60 resultsSorted by cheapest first
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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
No data available for this route at this time. Please check back soon.

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 April 28, 2026.
Read through reviews of airlines operating flights from Ontario to South Korea, such as China Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very good
819 reviews

Comfort

8.0

Boarding

8.3

Crew

8.5

Entertainment

8.0

Food

7.8

Overall

8.3

Reviews

1 / 20
10.0
Excellent

A,Feb 2026

SEA - TPE

China Airlines has improved significantly over the years. This is the first time we fly on their business class after 20+ years. Both hardware and services impressed us. Will definitely fly with again in the future.
China Airlines
8.3
Very good
819 reviews
China Airlines
8.3
Very good
819 reviews

Comfort

8.0

Boarding

8.3

Crew

8.5

Entertainment

8.0

Food

7.8

Overall

8.3

Reviews

1 / 20
10.0
Excellent

A,Feb 2026

SEA - TPE

China Airlines has improved significantly over the years. This is the first time we fly on their business class after 20+ years. Both hardware and services impressed us. Will definitely fly with again in the future.

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.

  • How long is the flight from Ontario to South Korea?

    Qatar Airways, United Airlines, and China Airlines can get you from Ontario to South Korea in just under 16h 45m. Your travel time can differ by up to 13h 35m. There are 6004 mi between Ontario and South Korea. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Ontario to South Korea

Discover the top airline 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 April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$854Average$948FlexibilityNo cancel feeOn-time70%

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