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Cheap flights from Ontario to South Korea from $407

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 South Korea departing on 12/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Ontario to South Korea

Cheap round-trip flights

Enter your travel dates to find the best prices.
China Airlines Logo
11:50 pm - 7:15 pmONT-ICN
27h 25m1 stop
China Airlines Logo
12:30 pm - 5:50 pmICN-ONT
21h 20m1 stop
$883China Airlines
Find Deal
Thu, Mar 19 - Thu, Mar 26
China Airlines Logo
10:50 pm - 11:20 amONT-ICN
19h 30m1 stop
China Airlines Logo
8:15 pm - 5:50 pmICN-ONT
37h 35m1 stop
$892China Airlines
Find Deal
Sun, Mar 1 - Sun, Mar 8
Alaska Airlines Logo
6:00 am - 6:35 pmONT-ICN
19h 35m1 stop
Alaska Airlines Logo
8:35 pm - 10:37 pmICN-ONT
19h 02m1 stop
$916Alaska Airlines
Find Deal
Thu, Jan 29 - Sun, Mar 1
Alaska Airlines Logo
11:53 am - 6:35 pmONT-ICN
37h 42m1 stop
Alaska Airlines Logo
8:35 pm - 8:36 pmICN-ONT
17h 01m1 stop
$923Alaska Airlines
Find Deal
Wed, Jan 28 - Sat, Feb 7
American Airlines Logo
4:47 pm - 4:45 pmONT-ICN
30h 58m2 stops
American Airlines Logo
7:15 pm - 10:28 pmICN-ONT
20h 13m1 stop
$971American Airlines
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Wed, Dec 3 - Wed, Dec 10
American Airlines Logo
12:46 pm - 4:45 pmONT-ICN
34h 59m1 stop
American Airlines Logo
7:15 pm - 10:28 pmICN-ONT
20h 13m1 stop
$973American Airlines
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Wed, Dec 3 - Wed, Dec 10
United Airlines Logo
6:00 am - 4:15 pmONT-ICN
17h 15m1 stop
United Airlines Logo
12:45 pm - 12:37 pmICN-ONT
16h 52m1 stop
$1,016United Airlines
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Wed, Nov 19 - Fri, Nov 28
United Airlines Logo
5:05 am - 5:40 amONT-ICN
31h 35m2 stops
United Airlines Logo
12:45 pm - 12:17 pmICN-ONT
16h 32m1 stop
$1,020United Airlines
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Mon, Nov 17 - Tue, Dec 2
Korean Air Logo
6:45 am - 7:35 pmONT-PUS
19h 50m2 stops
Korean Air Logo
10:25 am - 6:18 pmPUS-ONT
24h 53m2 stops
$1,294Korean Air
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Mon, Nov 17 - Thu, Nov 27
Korean Air Logo
6:40 am - 3:10 pmONT-PUS
39h 30m2 stops
Korean Air Logo
4:10 pm - 1:56 pmPUS-ONT
38h 46m2 stops
$3,042Korean Air
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Fri, Dec 19 - Mon, Jan 5

China Airlines flights from Ontario to South Korea

Our best China Airlines deals on Ontario to South Korea flight tickets
China Airlines
Mar 19
ONT11:50 pmOntario
27h 25m
1 stop
ICN7:15 pmIncheon Intl
Mar 26
ICN12:30 pmIncheon Intl
21h 20m
1 stop
ONT5:50 pmOntario
$883
Find similar
China Airlines
Mar 1
ONT10:50 pmOntario
19h 30m
1 stop
ICN11:20 amIncheon Intl
Mar 8
ICN8:15 pmIncheon Intl
37h 35m
1 stop
ONT5:50 pmOntario
$892
Find similar
China Airlines
Jan 12
ONT10:50 pmOntario
19h 30m
1 stop
ICN11:20 amIncheon Intl
Jan 30
ICN12:30 pmIncheon Intl
21h 20m
1 stop
ONT4:50 pmOntario
$901
Find similar

Alaska Airlines flights from Ontario to South Korea

Our best Alaska Airlines deals on Ontario to South Korea flight tickets
Alaska Airlines
Nov 9
ONT6:00 amOntario
19h 35m
1 stop
ICN6:35 pmIncheon Intl
Nov 20
ICN8:35 pmIncheon Intl
19h 57m
1 stop
ONT11:32 pmOntario
$916
Find similar
Alaska Airlines
Jan 28
ONT11:53 amOntario
37h 42m
1 stop
ICN6:35 pmIncheon Intl
Feb 7
ICN8:35 pmIncheon Intl
17h 01m
1 stop
ONT8:36 pmOntario
$923
Find similar
Alaska Airlines
Jan 14
ONT7:00 amOntario
18h 35m
2 stops
ICN6:35 pmIncheon Intl
Jan 24
ICN8:35 pmIncheon Intl
33h 31m
2 stops
ONT1:06 pmOntario
$1,013
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momondo Fare Finder

 
Customize your flight search to find flights from Ontario to South Korea 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 November 6, 2025.
Use the filters below to find and compare flights from Ontario to South Korea that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Thu 3/19

11:50 pm-7:15 pm

1 stop27h 25m

Incheon Intl

Thu 3/26

12:30 pm-5:50 pm

1 stop21h 20m

$883

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sun 3/1

10:50 pm-11:20 am

1 stop19h 30m

Incheon Intl

Sun 3/8

8:15 pm-5:50 pm

1 stop37h 35m

$892

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Thu 1/29

6:00 am-6:35 pm

1 stop19h 35m

Incheon Intl

Sun 3/1

8:35 pm-10:37 pm

1 stop19h 02m

$916

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 1/28

11:53 am-6:35 pm

1 stop37h 42m

Incheon Intl

Sat 2/7

8:35 pm-8:36 pm

1 stop17h 01m

$923

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 12/3

4:47 pm-4:45 pm

2 stops30h 58m

Incheon Intl

Wed 12/10

7:15 pm-10:28 pm

1 stop20h 13m

$971

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 12/3

12:46 pm-4:45 pm

1 stop34h 59m

Incheon Intl

Wed 12/10

7:15 pm-10:28 pm

1 stop20h 13m

$973

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 11/19

6:00 am-4:15 pm

1 stop17h 15m

Incheon Intl

Fri 11/28

12:45 pm-12:37 pm

1 stop16h 52m

$1,016

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 11/17

5:05 am-5:40 am

2 stops31h 35m

Incheon Intl

Tue 12/2

12:45 pm-12:17 pm

1 stop16h 32m

$1,020

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Mon 11/17

6:45 am-7:35 pm

2 stops19h 50m

Busan Gimhae

Thu 11/27

10:25 am-6:18 pm

2 stops24h 53m

$1,294

OntarioBusan

ONT - PUS

ONTPUS

Ontario

Fri 12/19

6:40 am-3:10 pm

2 stops39h 30m

Busan Gimhae

Mon 1/5

4:10 pm-1:56 pm

2 stops38h 46m

$3,042

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 South Korea from

How to get the cheapest flight ticket from Ontario to South Korea

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 cheapest day to depart on your flight to South Korea?

On average, the least expensive day to fly to South Korea from Ontario is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $1,189. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ontario to South Korea for around $1,310.

What is the cheapest time of day to depart on your flight to South Korea?

Flying to South Korea from Ontario in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,130 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,480 on average. Flights to South Korea from Ontario in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on Ontario to South Korea flights?

You could potentially save up to 7% on your flight if you consider stops on a Ontario to South Korea flight.

Cheap Ontario to South Korea flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to South Korea

Direct flights

None
There are no direct flights from Ontario to South Korea. There are no popular flight routes from Ontario to South Korea.
Search flight deals

  • When did momondo last update prices for flights from Ontario Airport to South Korea?

    Prices for flights from Ontario Airport to South Korea were last updated today.

  • How many operators does momondo search for flights from Ontario Airport to South Korea?

  • How old do you have to be to fly from Ontario Airport to South Korea?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to South Korea.

  • What documentation or ID do you need to fly to South Korea?

    The necessary travel and health documents for your South Korea 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.

Best airlines flying from Ontario to South Korea

Compare and see reviews for airlines that fly from Ontario to South Korea with momondo
Airline
Rating
Free Cancellation
Price
China AirlinesPriceFrom $896Free CancellationRating
8.3
778 reviews
Search China Airlines flights
Korean AirPriceFrom $1,111Free CancellationRating
8.4
1,160 reviews
Search Korean Air flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to South Korea. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to South Korea 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 South Korea?

momondo provides multiple filters to help you find the best flight to South Korea from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to South Korea from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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