What is the cheapest airline that flies from Ontario to Incheon Intl?

American Airlines, China Airlines, and Korean Air are the most popular carriers operating from Ontario to Incheon Intl

What airlines fly to Incheon Intl Airport?

AIR PREMIA, Asiana Airlines and Korean Air are the top three most popular airlines that fly to Incheon Intl Airport from Ontario according to our data. AIR PREMIA is the first choice among our users, with 75% of people opting to fly with this airline when traveling to Incheon Intl Airport. Keep in mind that there are 14 different airlines that fly to Incheon Intl Airport on a routine basis, so you have a few additional options to choose from.

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?

As of October 2026, there is 1 operator available to choose from 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.

$371 Cheap Flights from Ontario to Incheon Intl Airport in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Seoul

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:06 pm - 9:20 pmONT Ontario-ICN Incheon Intl

33h 14m1 stop San Francisco

7:45 pm - 11:23 pmICN Incheon Intl-ONT Ontario

20h 38m1 stop San Francisco

$728Multiple Airlines

Thu, Dec 3 - Wed, Dec 9

7:06 pm - 9:20 pmONT Ontario-ICN Incheon Intl

33h 14m1 stop San Francisco

7:45 pm - 11:23 pmICN Incheon Intl-ONT Ontario

20h 38m1 stop San Francisco

$746Multiple Airlines

Thu, Dec 3 - Mon, Dec 14

8:31 pm - 9:20 pmONT Ontario-ICN Incheon Intl

31h 49m1 stop San Francisco

7:45 pm - 11:23 pmICN Incheon Intl-ONT Ontario

20h 38m1 stop San Francisco

$750Multiple Airlines

Fri, Nov 27 - Wed, Dec 9

8:31 pm - 9:20 pmONT Ontario-ICN Incheon Intl

31h 49m1 stop San Francisco

7:45 pm - 11:23 pmICN Incheon Intl-ONT Ontario

20h 38m1 stop San Francisco

$754Multiple Airlines

Fri, Nov 27 - Mon, Dec 7

8:31 pm - 9:20 pmONT Ontario-ICN Incheon Intl

31h 49m1 stop San Francisco

7:45 pm - 11:23 pmICN Incheon Intl-ONT Ontario

20h 38m1 stop San Francisco

$761Multiple Airlines

Fri, Nov 27 - Fri, Dec 11

7:06 pm - 9:20 pmONT Ontario-ICN Incheon Intl

33h 14m1 stop San Francisco

7:45 pm - 6:31 pmICN Incheon Intl-ONT Ontario

39h 46m2 stops San Francisco Las Vegas Harry Reid Intl

$774Multiple Airlines

Thu, Dec 3 - Wed, Dec 9

8:00 am - 9:20 pmONT Ontario-ICN Incheon Intl

20h 20m2 stops Las Vegas Harry Reid Intl San Francisco

7:45 pm - 11:23 pmICN Incheon Intl-ONT Ontario

20h 38m1 stop San Francisco

$776Multiple Airlines

Fri, Dec 4 - Sun, Dec 13

7:06 pm - 9:20 pmONT Ontario-ICN Incheon Intl

33h 14m1 stop San Francisco

7:45 pm - 6:31 pmICN Incheon Intl-ONT Ontario

39h 46m2 stops San Francisco Las Vegas Harry Reid Intl

$780Multiple Airlines

Thu, Dec 3 - Mon, Dec 14

10:50 pm - 11:20 amONT Ontario-ICN Incheon Intl

19h 30m1 stop Taipei City Taiwan Taoyuan Intl

8:15 pm - 5:05 pmICN Incheon Intl-ONT Ontario

37h 50m1 stop Taipei City Taiwan Taoyuan Intl

$1,034China Airlines

Fri, Feb 26 - Fri, Mar 12

12:10 am - 7:05 pmONT Ontario-ICN Incheon Intl

26h 55m1 stop Taipei City Taiwan Taoyuan Intl

12:45 pm - 6:00 pmICN Incheon Intl-ONT Ontario

21h 15m1 stop Taipei City Taiwan Taoyuan Intl

$1,036China Airlines

Sun, Apr 18 - Wed, May 5

Cheap last minute flights

Enter your travel dates to find the best prices.

6:20 am - 5:45 pmONT Ontario-ICN Incheon Intl

18h 25m1 stop Seattle/Tacoma Intl

6:45 pm - 5:16 pmICN Incheon Intl-ONT Ontario

15h 31m1 stop Seattle/Tacoma Intl

$960Delta

Thu, Nov 5 - Thu, Nov 19

6:00 am - 4:20 pmONT Ontario-ICN Incheon Intl

17h 20m1 stop Salt Lake City

6:40 pm - 4:24 pmICN Incheon Intl-ONT Ontario

14h 44m1 stop Salt Lake City

$968Delta

Tue, Nov 3 - Mon, Nov 16

6:00 am - 4:20 pmONT Ontario-ICN Incheon Intl

17h 20m1 stop Salt Lake City

6:45 pm - 5:16 pmICN Incheon Intl-ONT Ontario

15h 31m1 stop Seattle/Tacoma Intl

$968Delta

Thu, Nov 5 - Wed, Nov 18

6:00 am - 4:20 pmONT Ontario-ICN Incheon Intl

17h 20m1 stop Salt Lake City

6:40 pm - 4:24 pmICN Incheon Intl-ONT Ontario

14h 44m1 stop Salt Lake City

$968Delta

Mon, Nov 2 - Mon, Nov 16

6:00 am - 4:20 pmONT Ontario-ICN Incheon Intl

17h 20m1 stop Salt Lake City

6:45 pm - 5:16 pmICN Incheon Intl-ONT Ontario

15h 31m1 stop Seattle/Tacoma Intl

$968Delta

Tue, Nov 3 - Wed, Nov 18

6:00 am - 4:20 pmONT Ontario-ICN Incheon Intl

17h 20m1 stop Salt Lake City

6:40 pm - 4:24 pmICN Incheon Intl-ONT Ontario

14h 44m1 stop Salt Lake City

$968Delta

Mon, Nov 2 - Thu, Nov 19

6:00 am - 4:20 pmONT Ontario-ICN Incheon Intl

17h 20m1 stop Salt Lake City

6:40 pm - 4:24 pmICN Incheon Intl-ONT Ontario

14h 44m1 stop Salt Lake City

$968Delta

Mon, Nov 2 - Tue, Nov 17

6:00 am - 4:20 pmONT Ontario-ICN Incheon Intl

17h 20m1 stop Salt Lake City

6:40 pm - 4:24 pmICN Incheon Intl-ONT Ontario

14h 44m1 stop Salt Lake City

$968Delta

Thu, Nov 5 - Tue, Nov 17

10:50 pm - 7:15 pmONT Ontario-ICN Incheon Intl

27h 25m1 stop Taipei City Taiwan Taoyuan Intl

12:30 pm - 5:05 pmICN Incheon Intl-ONT Ontario

21h 35m1 stop Taipei City Taiwan Taoyuan Intl

$1,164China Airlines

Mon, Nov 2 - Thu, Dec 3

10:50 pm - 7:15 pmONT Ontario-ICN Incheon Intl

27h 25m1 stop Taipei City Taiwan Taoyuan Intl

12:30 pm - 5:05 pmICN Incheon Intl-ONT Ontario

21h 35m1 stop Taipei City Taiwan Taoyuan Intl

$1,238China Airlines

Mon, Nov 2 - Mon, Nov 23

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Korean Air flights from Ontario to Incheon Intl Airport

Our best Korean Air deals on Ontario to Incheon Intl Airport flight tickets

Korean Air

Nov 3

ONT6:20 amOntario

16h 35m

1 stop

ICN3:55 pmIncheon Intl

Nov 9

ICN9:20 pmIncheon Intl

18h 40m

1 stop

ONT11:00 pmOntario

$972

Korean Air

Nov 8

ONT6:00 pmOntario

28h 55m

1 stop

ICN3:55 pmIncheon Intl

Nov 11

ICN4:10 pmIncheon Intl

18h 06m

1 stop

ONT5:16 pmOntario

$978

Korean Air

Nov 5

ONT6:00 pmOntario

28h 55m

1 stop

ICN3:55 pmIncheon Intl

Nov 19

ICN4:10 pmIncheon Intl

18h 06m

1 stop

ONT5:16 pmOntario

$1,004

United Airlines flights from Ontario to Incheon Intl Airport

Our best United Airlines deals on Ontario to Incheon Intl Airport flight tickets

United Airlines

Nov 4

ONT6:00 amOntario

17h 15m

1 stop

ICN4:15 pmIncheon Intl

Nov 11

ICN12:45 pmIncheon Intl

16h 44m

1 stop

ONT12:29 pmOntario

$1,118

United Airlines

Nov 10

ONT4:17 pmOntario

20h 23m

1 stop

ICN5:40 amIncheon Intl

Dec 14

ICN6:00 pmIncheon Intl

14h 35m

1 stop

ONT3:35 pmOntario

$1,119

United Airlines

Nov 12

ONT6:00 amOntario

17h 15m

1 stop

ICN4:15 pmIncheon Intl

Nov 26

ICN6:00 pmIncheon Intl

35h 33m

2 stops

ONT12:33 pmOntario

$1,136

momondo Fare Finder

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 Ontario - ICN Incheon Intl

ONTICN

Ontario

Thu 12/3

7:06 pm-9:20 pm

1 stop33h 14m

Incheon Intl

Wed 12/9

7:45 pm-11:23 pm

1 stop20h 38m

$728

OntarioIncheon

ONT Ontario - ICN Incheon Intl

ONTICN

Ontario

Thu 12/3

7:06 pm-9:20 pm

1 stop33h 14m

Incheon Intl

Mon 12/14

7:45 pm-11:23 pm

1 stop20h 38m

$746

OntarioIncheon

ONT Ontario - ICN Incheon Intl

ONTICN

Ontario

Fri 11/27

8:31 pm-9:20 pm

1 stop31h 49m

Incheon Intl

Wed 12/9

7:45 pm-11:23 pm

1 stop20h 38m

$750

OntarioIncheon

ONT Ontario - ICN Incheon Intl

ONTICN

Ontario

Fri 11/27

8:31 pm-9:20 pm

1 stop31h 49m

Incheon Intl

Mon 12/7

7:45 pm-11:23 pm

1 stop20h 38m

$754

OntarioIncheon

ONT Ontario - ICN Incheon Intl

ONTICN

Ontario

Fri 11/27

8:31 pm-9:20 pm

1 stop31h 49m

Incheon Intl

Fri 12/11

7:45 pm-11:23 pm

1 stop20h 38m

$761

OntarioIncheon

ONT Ontario - ICN Incheon Intl

ONTICN

Ontario

Thu 12/3

7:06 pm-9:20 pm

1 stop33h 14m

Incheon Intl

Wed 12/9

7:45 pm-6:31 pm

2 stops39h 46m

$774

Quickest round-trip

OntarioIncheon

ONT Ontario - ICN Incheon Intl

ONTICN

Ontario

Fri 12/4

8:00 am-9:20 pm

2 stops20h 20m

Incheon Intl

Sun 12/13

7:45 pm-11:23 pm

1 stop20h 38m

$776

OntarioIncheon

ONT Ontario - ICN Incheon Intl

ONTICN

Ontario

Thu 12/3

7:06 pm-9:20 pm

1 stop33h 14m

Incheon Intl

Mon 12/14

7:45 pm-6:31 pm

2 stops39h 46m

$780

OntarioIncheon

ONT Ontario - ICN Incheon Intl

ONTICN

Ontario

Fri 2/26

10:50 pm-11:20 am

1 stop19h 30m

Incheon Intl

Fri 3/12

8:15 pm-5:05 pm

1 stop37h 50m

$1,034

OntarioIncheon

ONT Ontario - ICN Incheon Intl

ONTICN

Ontario

Sun 4/18

12:10 am-7:05 pm

1 stop26h 55m

Incheon Intl

Wed 5/5

12:45 pm-6:00 pm

1 stop21h 15m

$1,036

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 Tuesday when prices can be found for as low as $809. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $935. 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 $820. 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 in the afternoon when prices are $1,793 on average. Flights to Incheon Intl Airport from Ontario in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Best Price Found	$371
Fastest flight time	15h 55m
Direct flights	None

The best one-way flight to Incheon Intl Airport from Ontario in the past 72 hours is $371. The best round-trip flight deal from Ontario to Incheon Intl Airport found on momondo in the last 72 hours is $728.

The fastest flight from Ontario to Incheon Intl Airport takes 15h 55m

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 55m, 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?
As of October 2026, there is 1 operator available to choose from 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?
momondo data reveals that the most frequently booked airline on the route from Ontario to Incheon Intl Airport is China Airlines, representing 100% of all bookings.

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 Airlines	PriceFrom $860	Free Cancellation	Rating 8.3 854 reviews		Search China Airlines flights

Daejeon

Suwon

Seongnam

Anyang

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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.

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Cheap flights from Ontario to Seoul from $371

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 2/22. 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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Korean Air flights from Ontario to Incheon Intl Airport

Our best Korean Air deals on Ontario to Incheon Intl Airport flight tickets

United Airlines flights from Ontario to Incheon Intl Airport

Our best United Airlines deals on Ontario to Incheon Intl Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Ontario to Incheon Intl Airport that are best for you.

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

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

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

What is the cheapest airline that flies from Ontario to Incheon Intl?

What airlines fly to Incheon Intl Airport?

When to book flights from Ontario to Incheon Intl Airport

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying 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

Traveling to a place near Seoul?

Why use momondo?

An easier way to manage your Incheon Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Seoul

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List of cabin classes available on flights landing in Seoul. Availability may vary depending on flight origin and airline.

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