$443 Find Cheap Flights from South Korea to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 7/14. 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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KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario, as well as popular online travel agencies
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Flights Deals

Cheap Flights from South Korea to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from South Korea to Ontario 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 South Korea to Ontario

Wed, Sep 17 - Thu, Sep 25
United Airlines Logo
11:30 am - 12:13 pmICN-ONT
16h 43m1 stop
United Airlines Logo
6:30 pm - 4:20 amONT-ICN
17h 50m1 stop
$595United Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
United Airlines Logo
11:30 am - 12:13 pmICN-ONT
16h 43m1 stop
United Airlines Logo
1:35 pm - 3:00 pmONT-ICN
33h 25m1 stop
$596United Airlines
Find Deal
Mon, Jun 9 - Wed, Jun 25
Lufthansa Logo
4:50 pm - 5:39 pmICN-ONT
16h 49m1 stop
Lufthansa Logo
6:00 am - 3:00 pmONT-ICN
17h 00m1 stop
$710Lufthansa
Find Deal
Mon, Jun 9 - Wed, Sep 10
United Airlines Logo
4:50 pm - 9:04 pmICN-ONT
20h 14m2 stops
United Airlines Logo
6:00 am - 3:00 pmONT-ICN
17h 00m1 stop
$736United Airlines
Find Deal
Fri, Sep 5 - Mon, Sep 15
China Airlines Logo
8:35 pm - 6:40 pmICN-ONT
38h 05m1 stop
China Airlines Logo
12:10 am - 7:35 pmONT-ICN
27h 25m1 stop
$836China Airlines
Find Deal
Wed, Sep 3 - Sat, Sep 13
China Airlines Logo
8:35 pm - 6:40 pmICN-ONT
38h 05m1 stop
China Airlines Logo
12:45 am - 11:15 amONT-ICN
18h 30m1 stop
$837China Airlines
Find Deal
Mon, Jun 23 - Sun, Jun 29
 Logo
1:15 am - 6:00 pmICN-ONT
32h 45m2 stops
 Logo
12:10 am - 11:45 pmONT-ICN
31h 35m2 stops
Thu, Jun 19 - Mon, Jun 23
 Logo
1:15 am - 6:00 pmICN-ONT
32h 45m2 stops
 Logo
12:10 am - 11:45 pmONT-ICN
31h 35m2 stops
Tue, Jun 17 - Thu, Jun 19
American Airlines Logo
5:25 pm - 11:59 amICN-ONT
34h 34m1 stop
American Airlines Logo
6:23 am - 3:30 pmONT-ICN
41h 07m2 stops
$986American Airlines
Find Deal
Tue, Jun 17 - Thu, Jun 19
American Airlines Logo
5:25 pm - 1:50 pmICN-ONT
36h 25m1 stop
American Airlines Logo
6:23 am - 3:30 pmONT-ICN
41h 07m2 stops
$990American Airlines
Find Deal
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KAYAK's insights & trends for flights to Ontario

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

How long is the flight to Ontario?

The duration of your flight to Ontario depends on your departure and arrival airports. Obviously, any flights that include a layover will also be longer. The most popular routes to Ontario on KAYAK are from Incheon, which takes 11h 10m, Seoul, which takes 14h 05m, Busan, which takes 15h 30m, and Cheongju, which takes 17h 25m.

How many direct flights to Ontario are there each day?

There are around 130 direct flights from within South Korea to Ontario every day. Most flights depart in the morning, with 7:00 am the most common departure time and 46% of flights departing in the morning.


Good to know

Low seasonApril
High seasonOctober
Cheapest flight$443
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from Incheon to Ontario

FAQs - booking Ontario flights

  • How far is Ontario Airport from central Ontario?

    Central Ontario is 3 miles away from Ontario Airport.

  • What is the name of Ontario’s airport?

    There is only 1 airport in Ontario, called Ontario Airport (ONT). It can also be referred to as Ontario or Ontario Intl.

  • What is the cheapest day to fly to Ontario?

    Based on KAYAK data, the cheapest day to fly to Ontario is Thursday where round-trip tickets can be as cheap as $83. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $657 on average.

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

    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 to Ontario.

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

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

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

    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 to Ontario 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 to Ontario?

    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 to Ontario 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 Ontario?

    The cheapest time of day to fly to Ontario is generally in the morning, when round-trip flights cost $938 on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is $938.

  • How many direct flights to Ontario are there each week?

    Each week there are around 907 direct flights from within South Korea to Ontario. The most common day for departures is Friday, with 16% of flights taking off on this day.

Top tips for finding cheap flights to Ontario

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.

Top airlines flying from South Korea to Ontario

 
See real verified KAYAK customer reviews for airlines flying to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from South Korea to Ontario. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Ontario? 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 733 reviews
7.8Food
8.3Boarding
8.5Crew
8.0Comfort
8.0Entertainment
Airline reviews

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. :)

10.0 ExcellentAnonymous, May 2025SEA - TPE
Read more China Airlines reviews

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. :)

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

It was our first time flying with China Airlines and had a very nice experience. The airline staff & crews both on the ground and air were very nice. Food on the plane was very good. Will recommend it to family and friends.

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

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

Boarding could have been a little bit better but other than that it was a pretty good experience. I think because of the stowaway to Paris France recently they are being extra diligent about boarding passes at the gate. But they boarded the back of the plane first, and that's something I really think needs to start in the USA.

I was ordered vegetarian food, but didn't services to me :(

Airline itself is great. While food was being taken off of my tray my beer spilled which was a total accident and I wasn’t upset about that, what was frustrating was I had to ask for towels to clean up and wipe my leg. It would have been left as is if I hadn’t.

Bars and restaurants in Taipei close early. The lounge isn’t very good, but better than the public areas.

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.

United out of SFO is having issues with catering so none of our meals were loaded on the plane and no offer of compensation for our tickets purchased was offered.

Its good expeince but in enternteiment please be like you tube the music i like or movie

I needed to make changes to my flights. When I called customer service, they assisted me with care professionalism.

A bit rush for transit. Food and entertainment are not available

Wonderful and fast TSA checkpoint. The line was fast and our gate was close by

The gate was too far away for the connecting flight

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

We tried to upgrade to economy premium but were told this was not possible as we had booked through United Airlines (and Air Canada was operating the flight). This seemed silly given there was ample space in economy premium. Additionally, we had to wait almost 1.5 hours upon arrival to taxi to the gate. Otherwise, the crew were very pleasant and passengers were friendly.

headphone jack didnt work for the first flight and not much variety

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario

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