ONT - ICN

$567 Find Cheap Flights from Ontario to Seoul Incheon Airport

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 Incheon departing on 9/20. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Incheon Intl Airport

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

Cheap Flight Deals from Ontario to Incheon Intl (ONT-ICN)

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ontario to Incheon.
Discover the best prices for you by selecting your travel dates on KAYAK.
China Airlines Logo
12:45 am - 7:35 pmONT-ICN
26h 50m1 stop
China Airlines Logo
8:35 pm - 6:00 pmICN-ONT
37h 25m1 stop
$1,004China Airlines
Find Deal
Mon, Sep 8 - Tue, Sep 16
China Airlines Logo
12:10 am - 11:15 amONT-ICN
19h 05m1 stop
China Airlines Logo
12:25 pm - 5:50 pmICN-ONT
21h 25m1 stop
$1,014China Airlines
Find Deal
Mon, Sep 29 - Tue, Oct 28
Alaska Airlines Logo
7:10 am - 7:00 pmONT-ICN
19h 50m2 stops
Alaska Airlines Logo
9:25 pm - 9:26 amICN-ONT
28h 01m2 stops
$1,110Alaska Airlines
Find Deal
Thu, Aug 28 - Mon, Sep 1
Alaska Airlines Logo
7:22 pm - 7:00 pmONT-ICN
55h 38m2 stops
Alaska Airlines Logo
9:25 pm - 9:26 amICN-ONT
28h 01m2 stops
$1,134Alaska Airlines
Find Deal
Fri, Aug 29 - Mon, Sep 1
 Logo
7:10 am - 7:00 pmONT-ICN
19h 50m2 stops
 Logo
12:35 pm - 6:00 pmICN-ONT
21h 25m1 stop
$1,182
Find Deal
Thu, Sep 11 - Sat, Sep 20
 Logo
4:29 pm - 6:45 pmONT-ICN
34h 16m2 stops
 Logo
12:00 pm - 10:57 amICN-ONT
38h 57m2 stops
$1,246
Find Deal
Tue, May 13 - Tue, Jun 10
Hawaiian Airlines Logo
9:50 am - 7:00 pmONT-ICN
17h 10m1 stop
Hawaiian Airlines Logo
9:25 pm - 9:55 pmICN-ONT
16h 30m1 stop
$1,306Hawaiian Airlines
Find Deal
Sat, May 17 - Sat, May 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
$1,374Korean Air
Find Deal
Thu, Oct 2 - Tue, Oct 14
Hawaiian Airlines Logo
6:00 am - 6:35 pmONT-ICN
20h 35m1 stop
Hawaiian Airlines Logo
8:35 pm - 10:37 pmICN-ONT
18h 02m1 stop
$1,376Hawaiian Airlines
Find Deal
Thu, Oct 16 - Sat, Oct 25
Korean Air Logo
7:00 am - 4:40 pmONT-ICN
17h 40m1 stop
Korean Air Logo
4:40 pm - 5:28 pmICN-ONT
16h 48m1 stop
$1,384Korean Air
Find Deal
Thu, Aug 14 - Sun, Aug 31
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KAYAK's insights & trends for Ontario to Incheon flights

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

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

Your flight ticket price will generally be cheaper if you fly to Seoul Incheon Airport on a Friday and more expensive on a Saturday. On your return trip to Ontario, you should consider flying back on a Friday, and avoid Wednesdays for better deals.

What is the cheapest month to fly from Ontario to Incheon Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Incheon Intl Airport, 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 Incheon Intl Airport is August, where tickets cost $799 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $1,663 and $1,648 respectively.

Good to know

Low seasonAugust
High seasonFebruary
Cheapest flight$567
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Ontario to Seoul Incheon Airport

When to book flights from Ontario to Incheon

Are your dates flexible? Find out the best times to travel from Ontario to Incheon 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 Ontario to Seoul Incheon Airport flights

  • What is the cheapest flight from Ontario to Incheon Intl Airport?

    In the last 3 days, the lowest price for a flight from Ontario to Incheon Intl Airport was $567 for a one-way ticket and $1,004 for a round-trip.

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

    A passport is required to fly from Ontario to Seoul Incheon Airport.

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

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

  • Which airline alliances offer flights from Ontario to Seoul Incheon Airport?

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

  • Which is the best airline for flights from Ontario to Incheon, Korean Air or China Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Incheon are Korean Air and China Airlines. With an average price for the route of $1,230 and an overall rating of 8.4, Korean Air is the most popular choice. China Airlines is also a great choice for the route, with an average price of $1,061 and an overall rating of 8.3.

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

    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 Incheon Airport.

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

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

    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 Incheon Airport with an airline and back to Ontario with another airline. Booking your flights between Ontario and ICN can sometimes prove cheaper using this method.

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

    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 Incheon Airport 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 Incheon

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Incheon. 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 Incheon? 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 1068 reviews
8.5Boarding
8.3Comfort
8.1Food
8.2Entertainment
8.7Crew
Airline reviews

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.

8.0 ExcellentAnonymous, Apr 2025ATL - ICN
Read more Korean Air reviews

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!!

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 !!!

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…

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.

Didn't like on this return inbound flights (from Hong Kong to Vancouver) Outbound to the Hong Kong was good.

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

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