ONT - ICN

$513 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 5/13. 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, 0 bags

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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41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$1,004
Typical prices: $1,612-$1,121
Multiple Airlines
Mon 5/11Fri 5/29
ONT - ICN • 2 stops
Cheapest one-way
$513
Typical prices: $760-$832
Multiple Airlines
Wed 5/13
ONT - ICN • 3 stops
Top airlines
Cheapest • from $1,141 (round-trip)
Best reviews • 8.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Ontario and Incheon. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $733 (round-trip)
Shortest trip • 17h 23m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Incheon!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Incheon (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 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 Incheon

Mon, May 11 - Fri, May 29
Multiple Airlines Logo
7:59 pm - 9:40 pm
ONT
-
ICN
33h 41m
2 stops
Multiple Airlines Logo
7:35 pm - 2:35 pm
ICN
-
ONT
35h 00m
1 stop
$1,004Multiple Airlines
Sat, May 30 - Sat, Jun 13
Multiple Airlines Logo
4:04 pm - 9:40 pm
ONT
-
ICN
37h 36m
2 stops
Multiple Airlines Logo
6:00 pm - 11:13 am
ICN
-
ONT
33h 13m
1 stop
$1,125Multiple Airlines
Thu, Aug 27 - Thu, Oct 15
Alaska Airlines Logo
6:00 am - 5:30 pm
ONT
-
ICN
19h 30m
1 stop
Alaska Airlines Logo
7:35 pm - 10:39 pm
ICN
-
ONT
19h 04m
1 stop
$1,141Alaska Airlines
Mon, Aug 31 - Mon, Nov 2
Alaska Airlines Logo
6:00 am - 5:30 pm
ONT
-
ICN
19h 30m
1 stop
Alaska Airlines Logo
8:00 pm - 6:13 pm
ICN
-
ONT
15h 13m
1 stop
$1,142Alaska Airlines
Mon, Aug 31 - Wed, Sep 9
China Airlines Logo
12:45 am - 7:05 pm
ONT
-
ICN
26h 20m
1 stop
China Airlines Logo
12:45 pm - 6:40 pm
ICN
-
ONT
21h 55m
1 stop
$1,143China Airlines
Tue, Sep 8 - Thu, Oct 15
Alaska Airlines Logo
7:57 pm - 5:30 pm
ONT
-
ICN
29h 33m
1 stop
Alaska Airlines Logo
7:35 pm - 10:39 pm
ICN
-
ONT
19h 04m
1 stop
$1,149Alaska Airlines
Mon, Aug 31 - Sun, Sep 13
China Airlines Logo
12:45 am - 7:05 pm
ONT
-
ICN
26h 20m
1 stop
China Airlines Logo
8:05 pm - 6:40 pm
ICN
-
ONT
38h 35m
1 stop
$1,151China Airlines
Tue, Aug 18 - Fri, Oct 16
China Airlines Logo
12:45 am - 11:30 am
ONT
-
ICN
18h 45m
1 stop
China Airlines Logo
12:35 pm - 6:00 pm
ICN
-
ONT
21h 25m
1 stop
$1,152China Airlines
Fri, Aug 28 - Sun, Sep 13
China Airlines Logo
12:45 am - 11:30 am
ONT
-
ICN
18h 45m
1 stop
China Airlines Logo
12:45 pm - 6:40 pm
ICN
-
ONT
21h 55m
1 stop
$1,157China Airlines
Mon, Aug 17 - Tue, Aug 25
China Airlines Logo
12:45 am - 7:05 pm
ONT
-
ICN
26h 20m
1 stop
China Airlines Logo
12:45 pm - 6:40 pm
ICN
-
ONT
21h 55m
1 stop
$1,161China Airlines
Booking Insights

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.

How much is a round-trip flight from Ontario to Incheon Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Incheon Intl Airport departing in May.

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 July, where tickets cost $0 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,559 and $1,463 respectively.

Good to know

Low seasonSeptember
Cheapest flight$513
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 9% increase in price.
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 $513 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?

    SkyTeam is the only airline alliance operating flights between Ontario and Seoul Incheon Airport.

  • 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.

Reviews of the top airline 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.
8.3
China AirlinesOverall score based on 819 reviews
7.8Food
8.5Crew
8.0Entertainment
8.3Boarding
8.0Comfort
Airline reviews

We really enjoyed our flight to Seattle. The food was great and service was attentive.

10.0 ExcellentA, Apr 2026
TPE - SEA
Read more China Airlines reviews

We really enjoyed our flight to Seattle. The food was great and service was attentive.

Well, we upgraded and on a 14 hour flight not sure how we would tolerate it otherwise. The upgrades are ridiculously expensive and even with empty seats even in first class it was difficult to upgrade. Probably won’t fly China Air again due to this. The attendants tho were much better than the airlines in the states and there attentiveness and care for your comfort far exceeds other airlines in the states.

Flight attendants. Food, entertainment and most of all, be on time.

Very bad. They don’t allow group people to sit together by blocking most of seats and opening only single seat during online checking in. . By doing so, they can rip off customers at the check-in counter by collecting extra money if we want to sit together in the same row.

We are glad to have used China Airlines for our trip. Continue the good service! Thank you!

The flat bed full lying position is not comfortable at all, this could be improved, it is at an awkward position which i dont have the same issues with other airlines business class.

The flight was uneventful and the crew was kind and professional. Really appreciate the option to order a vegan meal for the flight!

I love my Delta crew, they were so welcoming and helpful.

Sat next to a woman who had her period. Blood was on her seat and on the arm rest between us. I ended up having period blood on my jacket and shoes. Very gross!

Better organization of boarding procedures. Terrible leadership guiding people to gates.

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

Information on your arrival and departure airports