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 15h 20m 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.

$399 Cheap Flights from South Korea to Ontario in 2026/27

Find the cheapest flights from South Korea to Los Angeles

Round-trip

One-way

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

Enter your travel dates to find the best prices.

6:00 pm - 3:35 pmICN Incheon Intl-ONT Ontario

14h 35m1 stop San Francisco

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

17h 15m1 stop San Francisco

$932Lufthansa

Mon, Dec 14 - Wed, Dec 30

6:00 pm - 10:30 pmICN Incheon Intl-ONT Ontario

21h 30m1 stop San Francisco

1:33 pm - 4:15 pmONT Ontario-ICN Incheon Intl

33h 42m1 stop San Francisco

$935United Airlines

Wed, Feb 24 - Sat, Mar 13

12:45 pm - 9:17 pmICN Incheon Intl-ONT Ontario

25h 32m2 stops San Francisco Denver Intl

1:33 pm - 4:15 pmONT Ontario-ICN Incheon Intl

33h 42m1 stop San Francisco

$935United Airlines

Wed, Feb 24 - Sat, Mar 13

6:00 pm - 3:35 pmICN Incheon Intl-ONT Ontario

14h 35m1 stop San Francisco

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

17h 15m1 stop San Francisco

$935United Airlines

Tue, Dec 8 - Thu, Dec 31

6:00 pm - 3:33 pmICN Incheon Intl-ONT Ontario

14h 33m1 stop San Francisco

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

18h 00m1 stop San Francisco

$935United Airlines

Tue, Nov 24 - Wed, Dec 2

6:00 pm - 3:35 pmICN Incheon Intl-ONT Ontario

14h 35m1 stop San Francisco

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

17h 15m1 stop San Francisco

$935United Airlines

Mon, Dec 7 - Wed, Dec 30

12:45 pm - 9:38 amICN Incheon Intl-ONT Ontario

13h 53m1 stop San Francisco

6:27 pm - 5:40 amONT Ontario-ICN Incheon Intl

18h 13m1 stop San Francisco

$935United Airlines

Mon, Dec 7 - Mon, Dec 28

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

16h 44m1 stop San Francisco

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

18h 00m1 stop San Francisco

$935United Airlines

Wed, Nov 25 - Wed, Dec 2

12:45 pm - 10:43 amICN Incheon Intl-ONT Ontario

14h 58m1 stop San Francisco

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

18h 00m1 stop San Francisco

$935United Airlines

Thu, Nov 26 - Thu, Dec 3

6:00 pm - 3:33 pmICN Incheon Intl-ONT Ontario

14h 33m1 stop San Francisco

6:37 pm - 5:40 amONT Ontario-ICN Incheon Intl

18h 03m1 stop San Francisco

$936United Airlines

Mon, Nov 23 - Tue, Nov 24

Recent last minute flight deals from South Korea to Los Angeles

Enter your travel dates to find the best prices.

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

$935United Airlines

Wed, Nov 18 - Wed, Dec 2

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

$946United Airlines

Thu, Nov 19 - Thu, Nov 26

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

16h 44m1 stop San Francisco

1:45 pm - 4:15 pmONT Ontario-ICN Incheon Intl

33h 30m2 stops Denver Intl San Francisco

$947United Airlines

Wed, Nov 18 - Sat, Feb 13

6:00 pm - 8:51 pmICN Incheon Intl-ONT Ontario

19h 51m2 stops San Francisco Denver Intl

1:45 pm - 4:15 pmONT Ontario-ICN Incheon Intl

33h 30m2 stops Denver Intl San Francisco

$947United Airlines

Wed, Nov 18 - Sat, Feb 13

6:00 pm - 3:33 pmICN Incheon Intl-ONT Ontario

14h 33m1 stop San Francisco

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

17h 15m1 stop San Francisco

$947United Airlines

Wed, Nov 18 - Mon, Feb 15

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

$947United Airlines

Tue, Nov 17 - Mon, Nov 30

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

$947United Airlines

Thu, Nov 19 - Tue, Dec 1

12:45 pm - 3:33 pmICN Incheon Intl-ONT Ontario

19h 48m1 stop San Francisco

11:27 am - 4:15 pmONT Ontario-ICN Incheon Intl

35h 48m1 stop San Francisco

$947United Airlines

Wed, Nov 18 - Sat, Feb 13

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

$947United Airlines

Thu, Nov 19 - Thu, Nov 26

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

$947United Airlines

Tue, Nov 17 - Tue, Nov 24

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Delta flights from South Korea to Ontario

Our best Delta deals on South Korea to Ontario flight tickets

Delta

Nov 24

ICN6:45 pmIncheon Intl

22h 04m

2 stops

ONT11:49 pmOntario

Nov 29

ONT6:00 amOntario

17h 20m

1 stop

ICN4:20 pmIncheon Intl

$1,058

Delta

Nov 27

ICN6:40 pmIncheon Intl

34h 40m

1 stop

ONT12:20 pmOntario

Feb 18

ONT7:00 amOntario

17h 45m

1 stop

ICN5:45 pmIncheon Intl

$1,068

Delta

Nov 27

ICN6:40 pmIncheon Intl

20h 36m

1 stop

ONT10:16 pmOntario

Dec 4

ONT6:00 amOntario

17h 20m

1 stop

ICN4:20 pmIncheon Intl

$1,125

United Airlines flights from South Korea to Ontario

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

United Airlines

Dec 7

ICN12:45 pmIncheon Intl

13h 53m

1 stop

ONT9:38 amOntario

Dec 28

ONT6:27 pmOntario

18h 13m

1 stop

ICN5:40 amIncheon Intl

$935

United Airlines

Feb 19

ICN6:00 pmIncheon Intl

20h 17m

2 stops

ONT9:17 pmOntario

Feb 21

ONT6:00 amOntario

17h 15m

1 stop

ICN4:15 pmIncheon Intl

$936

United Airlines

Feb 2

ICN6:00 pmIncheon Intl

20h 00m

2 stops

ONT9:00 pmOntario

Feb 16

ONT6:00 amOntario

17h 15m

1 stop

ICN4:15 pmIncheon Intl

$946

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Mon 12/14

6:00 pm-3:35 pm

1 stop14h 35m

Ontario

Wed 12/30

6:00 am-4:15 pm

1 stop17h 15m

$932

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Wed 2/24

6:00 pm-10:30 pm

1 stop21h 30m

Ontario

Sat 3/13

1:33 pm-4:15 pm

1 stop33h 42m

$935

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Wed 2/24

12:45 pm-9:17 pm

2 stops25h 32m

Ontario

Sat 3/13

1:33 pm-4:15 pm

1 stop33h 42m

$935

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Tue 12/8

6:00 pm-3:35 pm

1 stop14h 35m

Ontario

Thu 12/31

6:00 am-4:15 pm

1 stop17h 15m

$935

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Tue 11/24

6:00 pm-3:33 pm

1 stop14h 33m

Ontario

Wed 12/2

6:40 pm-5:40 am

1 stop18h 00m

$935

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Mon 12/7

6:00 pm-3:35 pm

1 stop14h 35m

Ontario

Wed 12/30

6:00 am-4:15 pm

1 stop17h 15m

$935

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Mon 12/7

12:45 pm-9:38 am

1 stop13h 53m

Ontario

Mon 12/28

6:27 pm-5:40 am

1 stop18h 13m

$935

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Wed 11/25

12:45 pm-12:29 pm

1 stop16h 44m

Ontario

Wed 12/2

6:40 pm-5:40 am

1 stop18h 00m

$935

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Thu 11/26

12:45 pm-10:43 am

1 stop14h 58m

Ontario

Thu 12/3

6:40 pm-5:40 am

1 stop18h 00m

$935

IncheonOntario

ICN Incheon Intl - ONT Ontario

ICNONT

Incheon Intl

Mon 11/23

6:00 pm-3:33 pm

1 stop14h 33m

Ontario

Tue 11/24

6:37 pm-5:40 am

1 stop18h 03m

$936

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, Alaska Airlines, and China Airlines 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 57% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 6 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

Best Price Found	$399
Fastest flight time	13h 53m
Direct flights	None

The best one-way flight to Ontario from South Korea in the past 72 hours is $399. The best round-trip flight deal from South Korea to Ontario found on momondo in the last 72 hours is $932.

The fastest flight from South Korea to Ontario takes 13h 53m

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

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Cheap flights from South Korea to Los Angeles from $399

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 12/16. 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 United Airlines deals on South Korea to Ontario flight tickets

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What airlines fly to Ontario?

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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.

Find better results for your trip to the United States

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

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

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