ONT - SEL

$472 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 8/30. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Seoul

 
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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights Deals

Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Seoul

Sat, Aug 30 - Fri, Sep 12
 Logo
1:37 pm - 8:30 pmONT-ICN
38h 53m2 stops
 Logo
6:20 pm - 11:40 pmICN-ONT
21h 20m1 stop
Mon, Sep 1 - Thu, Sep 18
China Airlines Logo
12:45 am - 11:15 amONT-ICN
18h 30m1 stop
China Airlines Logo
12:35 pm - 6:00 pmICN-ONT
21h 25m1 stop
$940China Airlines
Find Deal
Mon, Aug 4 - Sun, Aug 24
China Airlines Logo
12:45 am - 11:15 amONT-ICN
18h 30m1 stop
China Airlines Logo
8:35 pm - 6:40 pmICN-ONT
38h 05m1 stop
$960China Airlines
Find Deal
Thu, Oct 16 - Mon, Oct 27
Alaska Airlines Logo
7:25 pm - 6:35 pmONT-ICN
31h 10m1 stop
Alaska Airlines Logo
8:35 pm - 10:37 pmICN-ONT
18h 02m1 stop
$1,107Alaska Airlines
Find Deal
Fri, Sep 12 - Fri, Sep 19
Alaska Airlines Logo
3:04 pm - 6:35 pmONT-ICN
35h 31m1 stop
Alaska Airlines Logo
8:35 pm - 11:59 pmICN-ONT
19h 24m1 stop
$1,108Alaska Airlines
Find Deal
Thu, Oct 2 - Tue, Oct 14
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
$1,150American Airlines
Find Deal
Wed, Oct 1 - Wed, Oct 15
American Airlines Logo
4:45 pm - 3:30 pmONT-ICN
30h 45m2 stops
American Airlines Logo
5:25 pm - 8:37 amICN-ONT
31h 12m2 stops
$1,154American Airlines
Find Deal
Wed, Aug 20 - Wed, Sep 17
Philippine Airlines Logo
6:00 am - 7:20 pmONT-ICN
45h 20m2 stops
Philippine Airlines Logo
8:00 am - 10:44 amICN-ONT
42h 44m2 stops
$1,245Philippine Airlines
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 - 5:17 pmICN-ONT
16h 37m1 stop
$1,342Korean Air
Find Deal
Mon, Sep 15 - Wed, Sep 24
Korean Air Logo
6:00 am - 3:20 pmONT-ICN
17h 20m1 stop
Korean Air Logo
4:40 pm - 5:17 pmICN-ONT
16h 37m1 stop
$1,380Korean Air
Find Deal
Useful Info

KAYAK's insights & trends for Ontario to Seoul flights

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.

Good to know

Low seasonAugust
High seasonJanuary
Cheapest flight$472
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly with an average 3% increase in price.
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 $472 for a one-way ticket and $936 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 8.3, China Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,393 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.

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 1080 reviews
8.2Entertainment
8.1Food
8.5Boarding
8.3Comfort
8.7Crew
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!

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.

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 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.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.