ONT - SEL

$406 Find Cheap Flights from Ontario to Seoul

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 Seoul departing on 3/10. 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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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Seoul, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Seoul, as well as popular online travel agencies
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Cheap Flight Deals from Ontario to Seoul (ONT-SEL)

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

Recent round-trip flight deals from Ontario to Seoul

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Ontario to Seoul.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
12:10 am - 7:35 pmONT-ICN
27h 25m1 stop
12:35 pm - 6:00 pmICN-ONT
21h 25m1 stop
$959China Airlines
Find Deal
Mon, Apr 7 - Thu, May 8
11:45 pm - 7:15 pmONT-ICN
27h 30m1 stop
12:25 pm - 5:50 pmICN-ONT
21h 25m1 stop
$988China Airlines
Find Deal
Mon, Mar 10 - Mon, Mar 24
8:26 am - 7:50 pmONT-ICN
19h 24m1 stop
8:45 pm - 3:04 pmICN-ONT
34h 19m2 stops
Mon, Apr 7 - Mon, Apr 14
8:26 am - 8:30 pmONT-ICN
20h 04m1 stop
8:35 pm - 6:00 pmICN-ONT
37h 25m1 stop
$1,009
Find Deal
Mon, Mar 10 - Thu, May 1
8:25 am - 7:25 pmONT-ICN
19h 00m1 stop
9:25 pm - 8:55 pmICN-ONT
15h 30m1 stop
$1,169Hawaiian Airlines
Find Deal
Sun, Mar 9 - Mon, Mar 10
9:50 am - 7:00 pmONT-ICN
17h 10m1 stop
9:25 pm - 9:55 pmICN-ONT
16h 30m1 stop
$1,182Hawaiian Airlines
Find Deal
Thu, May 15 - Fri, May 30
5:40 am - 6:45 pmONT-ICN
45h 05m2 stops
8:45 pm - 5:22 pmICN-ONT
36h 37m2 stops
$1,314WestJet
Find Deal
Tue, Apr 8 - Sun, Jun 8
5:45 am - 4:40 pmONT-ICN
18h 55m1 stop
4:40 pm - 4:43 pmICN-ONT
16h 03m1 stop
$1,338Korean Air
Find Deal
Wed, Apr 16 - Mon, Apr 28
5:40 am - 4:40 pmONT-ICN
19h 00m1 stop
4:40 pm - 4:43 pmICN-ONT
16h 03m1 stop
$1,365Korean Air
Find Deal
Tue, Apr 1 - Mon, Apr 7
2:00 pm - 6:45 pmONT-ICN
36h 45m2 stops
8:45 pm - 5:22 pmICN-ONT
36h 37m2 stops
$1,496WestJet
Find Deal
Sun, Aug 17 - Tue, Sep 30

Flights from Ontario to Seoul - Travel Insights & Trends

Get data-powered insights and trends into flights from Ontario to Seoul 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 Seoul?

The average price of all round-trip flights from Ontario to Seoul clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Seoul on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Ontario to Seoul. For your return ticket, we recommend flying on a Friday and avoiding Wednesdays for the best deals.

What is the cheapest month to fly from Ontario to Seoul?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Seoul, 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 Seoul is February, where tickets cost $1,049 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $2,331 and $1,954 respectively.

Good to know

Low season

December

High season

January

Cheapest flight

$406
Best time to beat the crowds but there is an average 66% increase in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Ontario to Seoul Incheon Airport

When to book flights from Ontario to Seoul

Are your dates flexible? Find out the best times to travel from Ontario to Seoul based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Seoul

  • What is the cheapest flight from Ontario to Seoul?

    In the last 3 days, the lowest price for a flight from Ontario to Seoul was $406 for a one-way ticket and $959 for a round-trip.

  • Do I need a passport to fly between Ontario and Seoul?

    Yes, you’ll need a passport to travel to Seoul from Ontario.

  • Which airports will I be using when flying from Ontario to Seoul?

    When flying out of Ontario you will be using Ontario. You will be landing at one of these airports: Seoul Gimpo Intl or Incheon Intl.

  • Which aircraft models fly most regularly from Ontario to Seoul?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Seoul?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Ontario and Seoul, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Seoul, China Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Seoul are China Airlines and United Airlines. With an average price for the route of $1,322 and an overall rating of 8.2, China Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,443 and an overall rating of 7.4.

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

    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 Seoul.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seoul from 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 from Ontario to Seoul?

    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 Seoul with an airline and back to Ontario with another airline.

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

    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 Seoul from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from Ontario to Seoul

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Seoul. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Seoul? 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 1037 reviews
8.2Entertainment
8.1Food
8.3Comfort
8.5Boarding
8.7Crew
Airline reviews

An International flight from Cebu to Incheon was delayed the night before without a proper explanation. Same thing happened from Incheon to Cebu in the first leg. I will not fly Korean again. And I will ensure Delta their US partner hears about it. This is a routine by Korean to delay flights from and to Cebu via Incheon.

2.0 MediocreAnonymous, Feb 2025CEB - ICN
Read more Korean Air reviews

An International flight from Cebu to Incheon was delayed the night before without a proper explanation. Same thing happened from Incheon to Cebu in the first leg. I will not fly Korean again. And I will ensure Delta their US partner hears about it. This is a routine by Korean to delay flights from and to Cebu via Incheon.

When I selected my seats, it showed row 29 as the front row, so I paid extra to sit in what I thought would be the front row, but when I boarded the plane, row 29 was the second economy row. I was disappointed that I'd spent almost $100 more for no actual benefit.

The food is always good and that flight was particularly good.

Unlimited drinks and snacks on this long flight. Very courteous Korean staff !!!

Absolutely wonderful,love the big clean plane specially the good food.

Was an easy and great flight. On time. Food was tasty and the only complaint I have is something no one could do anything about. Seems like there’s a lot of ill people in Korea these days and the flight was full of people coughing.

I’ve always been impressed by the cleanliness of the toilets or, at least, its frequent monitoring, cleaning, and toiletry replacements. The in-flight service by flight attendants is superb.

Glad you had Bibimbap which tasted much better than mesh potato or pasta.

Absolutely horrible. The fight member crew or not very friendly and the food was horrible.

It would be better if flight crew can clearly communicate in english. But they are kind and accommodating. Food is good, especially the sandwiches on the self-serving snack trays. They are better than the ones served. Boarding was organized.

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

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 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.

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

The food was the only thing that could have made the experience even better. Everything was stellar but the food. The staff was superb. I’ve been flying with ANA for years as my go-to and I think I may have found my new favorite. 😍

Short lay over. Seat assignment was terrible. Was traveling as a family and end up being seated separately. Will not use underpricer ever again.

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.

All of the staff were very helpful, polite I was very satisfied with China Airlines The food was normal for airlines but I’m sure they could do better

Everything you need to know for your flight from Ontario to Seoul

Information on your arrival and departure airports

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