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Cheap flights from Ontario to Seoul from $477

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Seoul departing on 8/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Seoul

Cheap round-trip flights

Enter your travel dates to find the best prices.
China Airlines Logo
12:10 am - 7:05 pm
ONT
-
ICN
26h 55m
1 stop
China Airlines Logo
12:45 pm - 6:00 pm
ICN
-
ONT
21h 15m
1 stop
$910China Airlines
Sun, Apr 26 - Thu, May 7
China Airlines Logo
12:45 am - 11:15 am
ONT
-
ICN
18h 30m
1 stop
China Airlines Logo
12:35 pm - 6:00 pm
ICN
-
ONT
21h 25m
1 stop
$925China Airlines
Sun, Sep 13 - Sun, Sep 20
China Airlines Logo
12:10 am - 11:15 am
ONT
-
ICN
19h 05m
1 stop
China Airlines Logo
8:35 pm - 6:00 pm
ICN
-
ONT
37h 25m
1 stop
$927China Airlines
Thu, Sep 17 - Sun, Oct 18
China Airlines Logo
12:45 am - 11:30 am
ONT
-
ICN
18h 45m
1 stop
China Airlines Logo
12:35 pm - 6:40 pm
ICN
-
ONT
22h 05m
1 stop
$931China Airlines
Mon, Aug 31 - Tue, Sep 15
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
$932China Airlines
Tue, Aug 18 - Wed, Aug 26
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
$965China Airlines
Sun, Aug 23 - Fri, Aug 28
China Airlines Logo
12:10 am - 7:05 pm
ONT
-
ICN
26h 55m
1 stop
China Airlines Logo
12:45 pm - 6:00 pm
ICN
-
ONT
21h 15m
1 stop
$971China Airlines
Mon, Apr 27 - Tue, May 12
China Airlines Logo
12:45 am - 7:35 pm
ONT
-
ICN
26h 50m
1 stop
China Airlines Logo
12:35 pm - 6:00 pm
ICN
-
ONT
21h 25m
1 stop
$972China Airlines
Mon, Sep 14 - Mon, Oct 5
China Airlines Logo
12:10 am - 7:05 pm
ONT
-
ICN
26h 55m
1 stop
China Airlines Logo
12:45 pm - 6:00 pm
ICN
-
ONT
21h 15m
1 stop
$977China Airlines
Mon, May 11 - Tue, May 19
China Airlines Logo
12:10 am - 7:05 pm
ONT
-
ICN
26h 55m
1 stop
China Airlines Logo
12:45 pm - 6:00 pm
ICN
-
ONT
21h 15m
1 stop
$997China Airlines
Tue, May 12 - Wed, May 20

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China Airlines flights from Ontario to Incheon Intl Airport

Our best China Airlines deals on Ontario to Incheon Intl Airport flight tickets
China Airlines
Apr 26
ONT12:10 amOntario
26h 55m
1 stop
ICN7:05 pmIncheon Intl
May 7
ICN12:45 pmIncheon Intl
21h 15m
1 stop
ONT6:00 pmOntario
$910
China Airlines
Sep 13
ONT12:45 amOntario
18h 30m
1 stop
ICN11:15 amIncheon Intl
Sep 20
ICN12:35 pmIncheon Intl
21h 25m
1 stop
ONT6:00 pmOntario
$925
China Airlines
Sep 17
ONT12:10 amOntario
19h 05m
1 stop
ICN11:15 amIncheon Intl
Oct 18
ICN8:35 pmIncheon Intl
37h 25m
1 stop
ONT6:00 pmOntario
$927

Qatar Airways flights from Ontario to Incheon Intl Airport

Our best Qatar Airways deals on Ontario to Incheon Intl Airport flight tickets
Qatar Airways
Apr 22
ONT6:00 amOntario
43h 30m
2 stops
ICN5:30 pmIncheon Intl
May 5
ICN11:45 pmIncheon Intl
38h 47m
2 stops
ONT10:32 pmOntario
$1,239
Qatar Airways
Apr 22
ONT10:39 amOntario
38h 51m
2 stops
ICN5:30 pmIncheon Intl
May 19
ICN11:45 pmIncheon Intl
40h 13m
2 stops
ONT11:58 pmOntario
$1,254
Qatar Airways
Apr 25
ONT10:39 amOntario
38h 51m
2 stops
ICN5:30 pmIncheon Intl
May 5
ICN11:45 pmIncheon Intl
38h 47m
2 stops
ONT10:32 pmOntario
$1,274

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Incheon Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated April 16, 2026.
Use the filters below to find and compare flights from Ontario to Incheon Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sun 4/26

12:10 am-7:05 pm

1 stop26h 55m

Incheon Intl

Thu 5/7

12:45 pm-6:00 pm

1 stop21h 15m

$910
Quickest round-trip

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sun 9/13

12:45 am-11:15 am

1 stop18h 30m

Incheon Intl

Sun 9/20

12:35 pm-6:00 pm

1 stop21h 25m

$925

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Thu 9/17

12:10 am-11:15 am

1 stop19h 05m

Incheon Intl

Sun 10/18

8:35 pm-6:00 pm

1 stop37h 25m

$927

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 8/31

12:45 am-11:30 am

1 stop18h 45m

Incheon Intl

Tue 9/15

12:35 pm-6:40 pm

1 stop22h 05m

$931

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Tue 8/18

12:45 am-7:05 pm

1 stop26h 20m

Incheon Intl

Wed 8/26

12:45 pm-6:40 pm

1 stop21h 55m

$932

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sun 8/23

12:45 am-11:30 am

1 stop18h 45m

Incheon Intl

Fri 8/28

12:45 pm-6:40 pm

1 stop21h 55m

$965

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 4/27

12:10 am-7:05 pm

1 stop26h 55m

Incheon Intl

Tue 5/12

12:45 pm-6:00 pm

1 stop21h 15m

$971

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 9/14

12:45 am-7:35 pm

1 stop26h 50m

Incheon Intl

Mon 10/5

12:35 pm-6:00 pm

1 stop21h 25m

$972

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 5/11

12:10 am-7:05 pm

1 stop26h 55m

Incheon Intl

Tue 5/19

12:45 pm-6:00 pm

1 stop21h 15m

$977

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Tue 5/12

12:10 am-7:05 pm

1 stop26h 55m

Incheon Intl

Wed 5/20

12:45 pm-6:00 pm

1 stop21h 15m

$997

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seoul from

How to get the cheapest flight ticket from Ontario to Incheon Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Ontario and Incheon Intl Airport?

What is the cheapest day to depart on your flight to Incheon Intl Airport?

The cheapest day to depart from Ontario to Incheon Intl Airport is on a Sunday when prices can be found for as low as $739. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $898. These prices are subject to change though, so be sure to set up a Price Alert for flights to Incheon Intl Airport.

What is the cheapest time of day to depart on your flight to Incheon Intl Airport?

In the evening is the cheapest time of day to fly from Ontario to Incheon Intl Airport when you can find flight prices for as low as $770. Flying to Incheon Intl Airport in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,091 on average. Flights to Incheon Intl Airport from Ontario at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on Ontario to Incheon Intl Airport flights?

You could potentially save up to 25% on your flight if you consider stops on a Ontario to Incheon Intl Airport flight.

When to book flights from Ontario to Incheon Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Incheon Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Incheon Intl Airport (ONT to ICN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Incheon Intl Airport

Fastest flight time

15h 00m

Direct flights

None
The fastest flight from Ontario to Incheon Intl Airport takes 15h 00m
There are no direct flights from Ontario to Incheon Intl Airport. There are no popular flight routes from Ontario to Incheon Intl Airport.
Search flight deals

Frequently asked questions about flying from Ontario to Incheon Intl Airport

  • How far is Ontario to Incheon Intl by plane?

    The distance between Ontario and Incheon Intl is about 6003.0 mi. Flights usually cover this in 15h 00m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Ontario Airport to Incheon Intl Airport?

    Prices for flights from Ontario Airport to Incheon Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario Airport to Incheon Intl Airport?

  • How old do you have to be to fly from Ontario Airport to Incheon Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Incheon Intl Airport.

  • What documentation or ID do you need to fly to Incheon Intl Airport?

    The necessary travel and health documents for your Incheon Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Ontario to Incheon Intl Airport?

Best airlines flying from Ontario to Incheon Intl Airport

Compare and see reviews for airlines that fly from Ontario to Incheon Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
China AirlinesPriceFrom $860Free CancellationRating
8.3
816 reviews
Search China Airlines flights

Traveling to a place near Seoul?

Book flights to Seoul if you plan to visit one of these locations
Daejeon
Suwon
Seongnam
Anyang

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Seoul?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seoul from Ontario.

Can I find flights from Ontario to Seoul with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seoul from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Seoul?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Seoul.

I’m not ready to book a flight from Ontario to Seoul right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Seoul flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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