$515 Find Cheap Flights from Ontario to South Korea

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to South Korea departing on 8/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Ontario to South Korea

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Seoul
Incheon1 stop$895
Jeju City
Jeju City1 stop$1,237
Busan
Busan1 stop$949
Seoul
Incheon1 stop$895
Jeju City
Jeju City1 stop$1,237
Busan
Busan1 stop$949

Book Cheap Ontario to South Korea Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to South Korea that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to South Korea

Mon, Aug 31 - Wed, Sep 9
China Airlines Logo
12:45 am - 7:05 pm
ONT
-
ICN
26h 20m
1 stop
China Airlines Logo
12:45 pm - 6:40 pm
ICN
-
ONT
21h 55m
1 stop
$895China Airlines
Thu, Sep 3 - Fri, Sep 11
China Airlines Logo
12:45 am - 7:05 pm
ONT
-
ICN
26h 20m
1 stop
China Airlines Logo
12:45 pm - 6:40 pm
ICN
-
ONT
21h 55m
1 stop
$898China Airlines
Fri, Sep 11 - Sat, Sep 19
China Airlines Logo
12:45 am - 11:30 am
ONT
-
ICN
18h 45m
1 stop
China Airlines Logo
12:35 pm - 6:00 pm
ICN
-
ONT
21h 25m
1 stop
$901China Airlines
Thu, Aug 27 - Sat, Sep 5
China Airlines Logo
12:45 am - 7:05 pm
ONT
-
ICN
26h 20m
1 stop
China Airlines Logo
12:45 pm - 6:40 pm
ICN
-
ONT
21h 55m
1 stop
$907China Airlines
Mon, Aug 31 - Thu, Sep 10
China Airlines Logo
12:45 am - 7:05 pm
ONT
-
ICN
26h 20m
1 stop
China Airlines Logo
8:05 pm - 6:40 pm
ICN
-
ONT
38h 35m
1 stop
$908China Airlines
Tue, May 5 - Tue, May 19
Multiple Airlines Logo
12:10 am - 7:55 pm
ONT
-
PUS
27h 45m
1 stop
Multiple Airlines Logo
9:30 am - 6:00 pm
PUS
-
ONT
24h 30m
1 stop
$1,114Multiple Airlines
Thu, Sep 3 - Sun, Sep 13
Multiple Airlines Logo
12:45 am - 9:30 am
ONT
-
PUS
16h 45m
1 stop
Multiple Airlines Logo
8:00 pm - 11:16 am
PUS
-
ONT
31h 16m
2 stops
$1,146Multiple Airlines
Mon, Aug 31 - Wed, Sep 2
Korean Air Logo
6:00 am - 7:55 pm
ONT
-
TAE
21h 55m
2 stops
Korean Air Logo
7:55 am - 11:44 pm
TAE
-
ONT
31h 49m
2 stops
$1,464Korean Air
Sun, Sep 6 - Thu, Sep 10
Korean Air Logo
7:00 am - 7:55 pm
ONT
-
TAE
20h 55m
2 stops
Korean Air Logo
7:55 am - 5:16 pm
TAE
-
ONT
25h 21m
2 stops
$1,515Korean Air
Thu, May 21 - Tue, Jun 2
Japan Airlines Logo
6:00 am - 10:40 am
ONT
-
GMP
36h 40m
2 stops
Japan Airlines Logo
8:00 am - 3:09 pm
GMP
-
ONT
23h 09m
2 stops
$2,151Japan Airlines
Booking Insights

KAYAK's insights & trends for Ontario to South Korea flights

Get data-powered insights and trends into flights from Ontario to South Korea to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Ontario to South Korea?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Ontario to South Korea were found on China Airlines ($950) and United Airlines ($1,426).

Find deals

Good to know

Low seasonSeptember
Cheapest flight$515
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from Ontario to Seoul Incheon Airport

FAQs - booking South Korea flights

  • How does KAYAK find such low prices on flights from Ontario to South Korea?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to South Korea.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to South Korea?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to South Korea is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to South Korea?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Ontario to South Korea with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to South Korea?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Ontario to South Korea up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Ontario to South Korea

 
Need help choosing which airline to fly with from Ontario to South Korea? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.3
China AirlinesOverall score based on 816 reviews
8.0Comfort
8.3Boarding
8.0Entertainment
8.5Crew
7.8Food
Airline reviews

We really enjoyed our flight to Seattle. The food was great and service was attentive.

10.0 ExcellentA, Apr 2026
TPE - SEA
Read more China Airlines reviews

We really enjoyed our flight to Seattle. The food was great and service was attentive.

The crew are amazing. Very professional, polite, kind, and accommodating.

Flight attendants. Food, entertainment and most of all, be on time.

Delayed. Not a full flight and whole rows left open with the paid seating. Food was ok. My beef meal only had one cube of beef the rest carrot cubes. Entertainment on personal device but didn’t know about it until the flight was almost done.

We are glad to have used China Airlines for our trip. Continue the good service! Thank you!

The flat bed full lying position is not comfortable at all, this could be improved, it is at an awkward position which i dont have the same issues with other airlines business class.

The flight was uneventful and the crew was kind and professional. Really appreciate the option to order a vegan meal for the flight!

I love my Delta crew, they were so welcoming and helpful.

I absolutely loved my flight from Taipei to LAX. I was originally assigned to a different seat, however one of the stewardess noticed I was uncomfortable in my seat. She offered to move me to a more comfortable setting. Although she didn’t have to do what she did, I am more than grateful and thankful for her doing so. My longer flight felt much more comfortable, just by her taking notice. I really appreciate her.

Better organization of boarding procedures. Terrible leadership guiding people to gates.

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

Information on your arrival and departure airports

Ontario (ONT)