$382 Find Cheap Flights from Ontario to South Korea - Compare and Save

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 7/29. 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$934
Jeju City
Jeju City1 stop$1,289
Busan
Busan1 stop$1,098
Seoul
Incheon1 stop$934
Jeju City
Jeju City1 stop$1,289
Busan
Busan1 stop$1,098

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

Wed, Aug 5 - Thu, Aug 27
Multiple Airlines Logo
8:58 am - 9:40 pm
ONT
-
ICN
20h 42m
1 stop
Multiple Airlines Logo
8:30 pm - 11:02 am
ICN
-
ONT
54h 32m
2 stops
$934Multiple Airlines
Sat, Aug 1 - Tue, Aug 25
Multiple Airlines Logo
8:58 am - 8:10 pm
ONT
-
ICN
19h 12m
1 stop
Multiple Airlines Logo
7:20 am - 2:03 pm
ICN
-
ONT
46h 43m
2 stops
$935Multiple Airlines
Mon, Aug 24 - Mon, Sep 7
Multiple Airlines Logo
8:48 am - 9:40 pm
ONT
-
ICN
20h 52m
1 stop
Multiple Airlines Logo
8:05 pm - 6:40 pm
ICN
-
ONT
38h 35m
1 stop
$974Multiple Airlines
Sun, Aug 2 - Wed, Sep 9
China Airlines Logo
12:45 am - 7:00 pm
ONT
-
PUS
26h 15m
1 stop
China Airlines Logo
10:30 am - 6:40 pm
PUS
-
ONT
24h 10m
1 stop
$1,098China Airlines
Fri, Oct 2 - Thu, Oct 15
STARLUX Airlines Logo
11:30 pm - 5:55 pm
ONT
-
PUS
26h 25m
1 stop
STARLUX Airlines Logo
6:55 pm - 5:05 pm
PUS
-
ONT
38h 10m
1 stop
$1,103STARLUX Airlines
Sun, Sep 27 - Tue, Oct 6
China Airlines Logo
12:10 am - 9:30 am
ONT
-
PUS
17h 20m
1 stop
China Airlines Logo
10:30 am - 6:00 pm
PUS
-
ONT
23h 30m
1 stop
$1,119China Airlines
Wed, Sep 2 - Wed, Sep 23
STARLUX Airlines Logo
11:30 pm - 5:55 pm
ONT
-
PUS
26h 25m
1 stop
STARLUX Airlines Logo
12:30 pm - 5:05 pm
PUS
-
ONT
20h 35m
1 stop
$1,135STARLUX Airlines
Tue, Aug 18 - Sat, Sep 5
Korean Air Logo
6:20 am - 7:55 pm
ONT
-
TAE
21h 35m
2 stops
Korean Air Logo
7:55 am - 10:23 pm
TAE
-
ONT
30h 28m
2 stops
$1,411Korean Air
Mon, Aug 10 - Sun, Aug 23
Korean Air Logo
6:20 am - 9:45 pm
ONT
-
CJU
23h 25m
2 stops
Korean Air Logo
12:05 pm - 5:21 pm
CJU
-
ONT
21h 16m
2 stops
$1,423Korean Air
Sat, Dec 5 - Sun, Dec 20
Japan Airlines Logo
6:00 am - 10:05 pm
ONT
-
GMP
23h 05m
2 stops
Japan Airlines Logo
8:00 am - 11:53 am
GMP
-
ONT
20h 53m
2 stops
$2,073Japan 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.

What is the cheapest month to fly from Ontario to South Korea?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to South Korea, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to South Korea is July, when tickets cost $0 (return) on average. On the other hand, the most expensive months are December and November, when the average cost of round-trip tickets is $1,805 and $1,446 respectively.

Find deals

Good to know

Low seasonSeptember
Cheapest flight$382
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 15% lower on average.
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 833 reviews
8.0Entertainment
7.8Food
8.0Comfort
8.5Crew
8.3Boarding
Airline reviews

We were not sat together for the longeset duration of our travel very uncomfortable didnt enjoy that they fed us at 2 am

2.0 MediocreAnonymous, Jul 2026
SFO - TPE
Read more China Airlines reviews

We were not sat together for the longeset duration of our travel very uncomfortable didnt enjoy that they fed us at 2 am

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

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

I did not take the flight, tried to cancel it right after I booked it, but was unable to reach anyone. I blame Kayak for this situation because they sent the booking through another company and I was unable to get anyone to talk to me about the situation. I had to just take the hit and pay for another flight through Cathay Pacific, which was wonderful. I will never use Kayak again. (I bet they don’t post this review!) I’ll just post about them on social media sites. I don’t want anyone to have to go through the hassle and expense I dealt with.

Unable to set seat assignment. Got a call from presumably “China airlines representative” but was asking for an exorbitant amount for the seat assignment. Was traveling as a family end up being assigned to different seats as a result. Will never use underpricer again.

Not many selections for entertainment. Bulk head seats are no longer available with out fee at the counter. That’s pretty lame.

I would have liked to know how to order a special meal (for medical purposes) before the flight.

Ask flight attendant for water during flight and she was a little rude get the water.

For a long-haul flight, the crew did a very good job of keeping the lavatories clean and the aisles clear.

The check-in crew at SF did not put on breakable glass stickers on check-in baggages which caused my antique whisky bottle to break during transportation.

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

Information on your arrival and departure airports

Ontario (ONT)