How long does it take to fly to Ontario?

Average flight duration from South Korea to Ontario depends on which airport you fly into and out of. Flying from Incheon to Los Angeles is 11h on average, while flying from Seoul to Los Angeles is 14h 15m on average. Los Angeles is the most popular airport in Ontario.

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

Prices for flights from South Korea to Ontario Airport refresh daily.

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

What documentation or ID do you need to fly to Ontario Airport?

The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$441 Cheap Flights from South Korea to Ontario in 2026

Find the cheapest flights from South Korea to Los Angeles

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Recent round-trip flight deals from South Korea to Los Angeles

Enter your travel dates to find the best prices.

11:30 am - 12:12 pmICN Incheon Intl-ONT Ontario

16h 42m1 stop San Francisco

6:08 am - 3:00 pmONT Ontario-ICN Incheon Intl

16h 52m1 stop San Francisco

$652United Airlines

Thu, Sep 3 - Sun, Sep 6

11:30 am - 12:12 pmICN Incheon Intl-ONT Ontario

16h 42m1 stop San Francisco

6:08 am - 3:00 pmONT Ontario-ICN Incheon Intl

16h 52m1 stop San Francisco

$655United Airlines

Tue, Sep 8 - Thu, Sep 17

12:45 pm - 12:29 pmICN Incheon Intl-ONT Ontario

16h 44m1 stop San Francisco

6:00 am - 4:15 pmONT Ontario-ICN Incheon Intl

17h 15m1 stop San Francisco

$699United Airlines

Mon, Nov 2 - Wed, Nov 25

12:45 pm - 12:29 pmICN Incheon Intl-ONT Ontario

16h 44m1 stop San Francisco

1:00 pm - 5:40 amONT Ontario-ICN Incheon Intl

23h 40m2 stops Denver Intl San Francisco

$700United Airlines

Mon, Nov 23 - Thu, Jan 28

11:30 am - 12:12 pmICN Incheon Intl-ONT Ontario

16h 42m1 stop San Francisco

6:08 am - 3:00 pmONT Ontario-ICN Incheon Intl

16h 52m1 stop San Francisco

$701United Airlines

Fri, Sep 11 - Sun, Sep 20

12:45 pm - 12:29 pmICN Incheon Intl-ONT Ontario

16h 44m1 stop San Francisco

1:35 pm - 5:40 amONT Ontario-ICN Incheon Intl

23h 05m1 stop San Francisco

$704United Airlines

Mon, Nov 2 - Tue, Nov 24

12:45 pm - 12:15 pmICN Incheon Intl-ONT Ontario

16h 30m1 stop San Francisco

6:53 pm - 5:40 amONT Ontario-ICN Incheon Intl

17h 47m1 stop San Francisco

$705United Airlines

Wed, Dec 23 - Thu, Jan 14

4:50 pm - 8:01 pmICN Incheon Intl-ONT Ontario

19h 11m1 stop San Francisco

6:08 am - 3:00 pmONT Ontario-ICN Incheon Intl

16h 52m1 stop San Francisco

$708United Airlines

Mon, Aug 24 - Fri, Aug 28

12:45 pm - 3:27 pmICN Incheon Intl-ONT Ontario

19h 42m1 stop San Francisco

6:53 pm - 5:40 amONT Ontario-ICN Incheon Intl

17h 47m1 stop San Francisco

$731United Airlines

Thu, Jan 14 - Sun, Feb 14

12:45 pm - 11:06 pmICN Incheon Intl-ONT Ontario

27h 21m1 stop San Francisco

1:00 pm - 4:15 pmONT Ontario-ICN Incheon Intl

34h 15m2 stops Denver Intl San Francisco

$750United Airlines

Fri, Feb 5 - Wed, Feb 10

Recent last minute flight deals from South Korea to Los Angeles

Enter your travel dates to find the best prices.

4:50 pm - 12:50 pmICN Incheon Intl-ONT Ontario

36h 00m2 stops San Francisco Denver Intl

1:56 pm - 3:00 pmONT Ontario-ICN Incheon Intl

33h 04m1 stop San Francisco

$868United Airlines

Fri, Aug 14 - Wed, Aug 19

11:30 am - 12:12 pmICN Incheon Intl-ONT Ontario

16h 42m1 stop San Francisco

6:08 am - 3:00 pmONT Ontario-ICN Incheon Intl

16h 52m1 stop San Francisco

$903United Airlines

Mon, Aug 17 - Fri, Aug 21

4:50 pm - 10:59 pmICN Incheon Intl-ONT Ontario

22h 09m1 stop San Francisco

1:56 pm - 4:20 amONT Ontario-ICN Incheon Intl

22h 24m1 stop San Francisco

$905United Airlines

Mon, Aug 17 - Mon, Aug 31

4:50 pm - 12:50 pmICN Incheon Intl-ONT Ontario

36h 00m2 stops San Francisco Denver Intl

6:08 am - 3:00 pmONT Ontario-ICN Incheon Intl

16h 52m1 stop San Francisco

$909United Airlines

Fri, Aug 14 - Fri, Aug 28

4:50 pm - 12:50 pmICN Incheon Intl-ONT Ontario

36h 00m2 stops San Francisco Denver Intl

5:00 am - 4:20 amONT Ontario-ICN Incheon Intl

31h 20m2 stops Denver Intl San Francisco

$920United Airlines

Mon, Aug 17 - Fri, Aug 21

11:30 am - 8:53 pmICN Incheon Intl-ONT Ontario

25h 23m2 stops San Francisco Denver Intl

1:56 pm - 4:20 amONT Ontario-ICN Incheon Intl

22h 24m1 stop San Francisco

$992United Airlines

Sat, Aug 15 - Sun, Aug 16

2:15 am - 6:40 pmICN Incheon Intl-ONT Ontario

32h 25m2 stops Manila Ninoy Aquino Intl Taipei City Taiwan Taoyuan Intl

12:45 am - 12:45 amONT Ontario-ICN Incheon Intl

32h 00m2 stops Taipei City Taiwan Taoyuan Intl Manila Ninoy Aquino Intl

$1,250Multiple Airlines

Mon, Aug 17 - Mon, Aug 24

4:50 pm - 12:12 pmICN Incheon Intl-ONT Ontario

35h 22m1 stop San Francisco

5:00 am - 4:20 amONT Ontario-ICN Incheon Intl

31h 20m2 stops Denver Intl San Francisco

$1,255United Airlines

Fri, Aug 14 - Fri, Aug 28

4:50 pm - 12:50 pmICN Incheon Intl-ONT Ontario

36h 00m2 stops San Francisco Denver Intl

1:18 pm - 4:20 amONT Ontario-ICN Incheon Intl

23h 02m2 stops Denver Intl San Francisco

$1,309United Airlines

Fri, Aug 14 - Fri, Aug 28

11:30 am - 3:41 pmICN Incheon Intl-ONT Ontario

20h 11m1 stop San Francisco

8:00 am - 3:00 pmONT Ontario-ICN Incheon Intl

15h 00m1 stop San Francisco

$1,352United Airlines

Sat, Aug 15 - Sat, Aug 22

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Delta flights from South Korea to Ontario

Our best Delta deals on South Korea to Ontario flight tickets

Delta

Nov 20

ICN6:45 pmIncheon Intl

15h 28m

1 stop

ONT5:13 pmOntario

Nov 30

ONT7:04 amOntario

17h 46m

1 stop

ICN5:50 pmIncheon Intl

$804

Delta

Nov 3

ICN6:45 pmIncheon Intl

20h 26m

2 stops

ONT10:11 pmOntario

Nov 25

ONT6:00 amOntario

17h 20m

1 stop

ICN4:20 pmIncheon Intl

$805

Delta

Nov 9

ICN6:45 pmIncheon Intl

15h 28m

1 stop

ONT5:13 pmOntario

Nov 26

ONT6:00 amOntario

17h 20m

1 stop

ICN4:20 pmIncheon Intl

$806

American Airlines flights from South Korea to Ontario

Our best American Airlines deals on South Korea to Ontario flight tickets

American Airlines

Sep 9

ICN5:50 pmIncheon Intl

31h 39m

1 stop

ONT9:29 amOntario

Sep 15

ONT1:04 pmOntario

34h 41m

2 stops

ICN3:45 pmIncheon Intl

$873

American Airlines

Sep 9

ICN5:50 pmIncheon Intl

34h 16m

2 stops

ONT12:06 pmOntario

Sep 15

ONT1:04 pmOntario

34h 41m

2 stops

ICN3:45 pmIncheon Intl

$874

American Airlines

Sep 9

ICN5:50 pmIncheon Intl

34h 16m

2 stops

ONT12:06 pmOntario

Sep 15

ONT1:04 pmOntario

34h 41m

2 stops

ICN3:45 pmIncheon Intl

$880

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Thu 9/3

11:30 am-12:12 pm

1 stop16h 42m

Ontario

Sun 9/6

6:08 am-3:00 pm

1 stop16h 52m

$652

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Tue 9/8

11:30 am-12:12 pm

1 stop16h 42m

Ontario

Thu 9/17

6:08 am-3:00 pm

1 stop16h 52m

$655

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Mon 11/2

12:45 pm-12:29 pm

1 stop16h 44m

Ontario

Wed 11/25

6:00 am-4:15 pm

1 stop17h 15m

$699

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Mon 11/23

12:45 pm-12:29 pm

1 stop16h 44m

Ontario

Thu 1/28

1:00 pm-5:40 am

2 stops23h 40m

$700

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Fri 9/11

11:30 am-12:12 pm

1 stop16h 42m

Ontario

Sun 9/20

6:08 am-3:00 pm

1 stop16h 52m

$701

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Mon 11/2

12:45 pm-12:29 pm

1 stop16h 44m

Ontario

Tue 11/24

1:35 pm-5:40 am

1 stop23h 05m

$704

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Wed 12/23

12:45 pm-12:15 pm

1 stop16h 30m

Ontario

Thu 1/14

6:53 pm-5:40 am

1 stop17h 47m

$705

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Mon 8/24

4:50 pm-8:01 pm

1 stop19h 11m

Ontario

Fri 8/28

6:08 am-3:00 pm

1 stop16h 52m

$708

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Thu 1/14

12:45 pm-3:27 pm

1 stop19h 42m

Ontario

Sun 2/14

6:53 pm-5:40 am

1 stop17h 47m

$731

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Fri 2/5

12:45 pm-11:06 pm

1 stop27h 21m

Ontario

Wed 2/10

1:00 pm-4:15 pm

2 stops34h 15m

$750

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 South Korea to Ontario

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

Airlines

Other information

What is the cheapest airline that flies from South Korea to Ontario?

United Airlines, China Airlines, and ANA are the most popular carriers operating from South Korea to Ontario

What airlines fly to Ontario?

AIR PREMIA, Asiana Airlines and United Airlines are the top three most popular airlines that fly to Ontario from South Korea according to our data. AIR PREMIA is the first choice among our users, with 58% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 8 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

Cheap South Korea to Ontario flight deals and tips

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

Fastest flight time	14h 12m
Direct flights	None

The fastest flight from South Korea to Ontario takes 14h 12m

There are no direct flights from South Korea to Ontario. There are no popular flight routes from South Korea to Ontario.

Search flight deals

Frequently asked questions about flying from South Korea to Ontario

When did momondo last update prices for flights from South Korea to Ontario Airport?
Prices for flights from South Korea to Ontario Airport refresh daily.
How old do you have to be to fly from South Korea to Ontario 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 South Korea to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

It is quick and easy to find South Korea to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

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

Yes. All flights to Ontario from South Korea on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from South Korea to Ontario?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from South Korea.

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

If you are not ready to book a flight from South Korea to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.

An easier way to manage your Ontario 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.

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Cheap flights from South Korea to Los Angeles from $441

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from South Korea to Los Angeles departing on 10/15. 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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Delta flights from South Korea to Ontario

Our best Delta deals on South Korea to Ontario flight tickets

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Our best American Airlines deals on South Korea to Ontario flight tickets

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Cheap South Korea to Ontario flight deals and tips

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Frequently asked questions about flying from South Korea to Ontario

Why use momondo?

An easier way to manage your Ontario 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.

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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