$539 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 8/25. 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.
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Best South Korea Flight Deals from Ontario

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Seoul
Incheon2 stops$880
Jeju City
Jeju City2 stops$1,530
Busan
Busan1 stop$1,030
Seoul
Incheon2 stops$880
Jeju City
Jeju City2 stops$1,530
Busan
Busan1 stop$1,030

Cheap Flights from Ontario to South Korea (ONT-KR0)

 
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

Sat, Sep 13 - Sun, Sep 21
 Logo
1:37 pm - 8:30 pmONT-ICN
38h 53m2 stops
 Logo
6:20 pm - 11:40 pmICN-ONT
21h 20m1 stop
Mon, Oct 13 - Mon, Oct 27
China Airlines Logo
12:10 am - 7:35 pmONT-ICN
27h 25m1 stop
China Airlines Logo
12:25 pm - 5:50 pmICN-ONT
21h 25m1 stop
$960China Airlines
Find Deal
Tue, Sep 23 - Mon, Nov 3
China Airlines Logo
12:10 am - 7:35 pmONT-ICN
27h 25m1 stop
China Airlines Logo
12:25 pm - 4:50 pmICN-ONT
21h 25m1 stop
$975China Airlines
Find Deal
Fri, Sep 12 - Sat, Sep 27
Alaska Airlines Logo
7:22 pm - 6:35 pmONT-ICN
31h 13m1 stop
Alaska Airlines Logo
8:35 pm - 11:59 pmICN-ONT
19h 24m1 stop
$1,107Alaska Airlines
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Fri, Oct 24 - Sun, Nov 16
Alaska Airlines Logo
7:25 pm - 6:35 pmONT-ICN
31h 10m1 stop
Alaska Airlines Logo
8:35 pm - 3:12 pmICN-ONT
35h 37m1 stop
$1,115Alaska Airlines
Find Deal
Wed, Oct 1 - Wed, Oct 15
American Airlines Logo
11:59 pm - 3:30 pmONT-ICN
23h 31m1 stop
American Airlines Logo
5:25 pm - 12:02 amICN-ONT
22h 37m1 stop
$1,149American Airlines
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Wed, Oct 1 - Wed, Oct 15
American Airlines Logo
5:09 pm - 3:30 pmONT-ICN
30h 21m2 stops
American Airlines Logo
5:25 pm - 9:40 pmICN-ONT
20h 15m2 stops
$1,154American Airlines
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Mon, Aug 11 - Tue, Aug 26
Korean Air Logo
6:30 am - 4:40 pmONT-ICN
18h 10m1 stop
Korean Air Logo
4:40 pm - 5:21 pmICN-ONT
16h 41m1 stop
$1,337Korean Air
Find Deal
Mon, Sep 1 - Mon, Sep 8
Korean Air Logo
6:30 am - 4:40 pmONT-ICN
18h 10m1 stop
Korean Air Logo
4:40 pm - 10:42 pmICN-ONT
22h 02m1 stop
$1,342Korean Air
Find Deal
Mon, Sep 29 - Sun, Oct 12
Etihad Airways Logo
11:00 pm - 10:45 amONT-ICN
43h 45m2 stops
Etihad Airways Logo
1:35 am - 9:41 pmICN-ONT
60h 06m2 stops
$1,350Etihad Airways
Find Deal
Useful Info

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’s the cheapest day of the week to fly from Ontario to South Korea?

The average price of all round-trip flights from Ontario to South Korea clicked on KAYAK for each day over the last 12 months.

When flying from Ontario to South Korea, you should consider leaving on a Friday and avoid Saturdays if you are looking for the best rates. For your return to Ontario, you’ll find the best rates on Fridays and the most expensive ones on Wednesdays.


Good to know

Low seasonAugust
High seasonMarch
Cheapest flight$539
Best time to beat the crowds with an average 40% drop in price.
Most popular time to fly and prices are also 19% 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.

  • What is the cheapest time of day to fly to South Korea?

    The cheapest time of day to fly to South Korea is generally at night, when round-trip flights cost $1,130 on average. The most expensive time of day to fly to South Korea is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,480.

Top 3 airlines serving 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.
8.4
Korean AirOverall score based on 1079 reviews
8.1Food
8.7Crew
8.5Boarding
8.3Comfort
8.2Entertainment
Airline reviews

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

10.0 ExcellentAnonymous, May 2025LAS - ICN
Read more Korean Air reviews

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Unfortunately, there has been a boarding and departure delay. However, as usual, the flight arrived earlier than the scheduled. There has been a turbulence in-between, it’s unavoidable. I couldn’t complain them.

Not many people, so you can lay down on two seats

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

The food on this flight from NRT to ICN was average. The staff were very friendly, but the flight took about 60 minutes longer than it should have because the pilot was only flying at 330mph instead of 500-550. Not sure what the reason is for that, but it meant for a much longer flight.

Flight delayed going to Korea. No free WiFi. Other than that everything else is were good. I would love to fly with Korea airline again

Food choice could be better, plus the crew can walk around and offer snacks and drinks. Also the air-conditioning onboard blows high speed, and very cold makes the trip uncomfortable.

long flights are difficult but the crew and amenities made it a very good experience

Always have great flight experience on Korean Air. Glad to have been able to book this on Kayak/Under Pricer this year!!

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

Staff was so nice and very helpful with directions aswell!

Most relaxing long distance flight I have been on. And I have flown on many.

Not great, will likely try to fly another or maybe I should have upgraded my ticket? Needed Air…

I don’t think I’ll be flying them again. Tight seats, no flowing air or air nozzles that you can turn air on you, for those who could have motion sickness this would be your worst nightmare. The pilot was great and experienced (which is what you want when flying 12 hours) overall I’m thankful knowledgeable pilots!

My ticket did not indication which group I was in for boarding; the gate attended help me

Very routh cabin crew food is only 2 meals for 13 hours fry with them They should get better training how to service good super routh language and talking with customer

I would like to commend the staff from this flight. They all looked happy and I can tell they love what they are doing and constantly smiling while serving the passengers. Special mention to the guy FA in our section. I did not get his name but he is so far the best F.A I have ever encountered!

staff are super nice and effiecient! It was a very comfortable and relaxing flight

When I booked a premium economy ticket. I then had to pay $100+ to book my seat.

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

They hired a new catering company the same day of my flight. They botched the job by not delivering the right carts and after THREE HOURS waiting, the flight crew timed out (flight was 19 hours long and FAA rules state crew can’t work more than 14 hours long). So they CANCELED OUR FLIGHT!! Worst experience ever. Avoid UAL at all costs.

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

get E+, a must for 5 hours flight if you are tall

The first flight was better in terms of the aircraft.

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

The gate was too far away for the connecting flight

Compared with other carriers business class for an overnight was not worth the extra expense.

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

Information on your arrival and departure airports

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