How long does it take to fly to Ontario?

Average flight duration from Seoul 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 30m on average. Los Angeles is the most popular airport in Ontario.

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

Prices for flights from Seoul to Ontario Airport refresh daily.

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

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

The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$340 Cheap Flights from Seoul to Ontario in 2025/26

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Cheap round-trip flights

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12:45 pm - 10:01 amICN-ONT

14h 16m1 stop

5:05 am - 5:40 amONT-ICN

31h 35m2 stops

$506United Airlines

Find Deal

Sun, Dec 21 - Mon, Jan 19

12:45 pm - 12:14 pmICN-ONT

16h 29m1 stop

6:00 am - 4:15 pmONT-ICN

17h 15m1 stop

$507United Airlines

Find Deal

Sun, Feb 1 - Tue, Feb 24

8:35 pm - 11:32 pmICN-ONT

19h 57m1 stop

6:00 am - 6:35 pmONT-ICN

19h 35m1 stop

$571Hawaiian Airlines

Find Deal

Mon, Nov 3 - Sun, Mar 1

8:35 pm - 12:14 amICN-ONT

20h 39m1 stop

6:00 am - 6:35 pmONT-ICN

19h 35m1 stop

$583Alaska Airlines

Find Deal

Thu, Dec 18 - Sun, Feb 8

8:05 pm - 10:38 pmICN-ONT

19h 33m1 stop

6:45 am - 4:30 pmONT-ICN

16h 45m1 stop

$586Delta

Find Deal

Wed, Feb 11 - Sun, Feb 22

8:05 pm - 10:38 pmICN-ONT

19h 33m1 stop

1:00 pm - 4:30 pmONT-ICN

34h 30m2 stops

$587Delta

Find Deal

Wed, Feb 4 - Wed, Feb 25

8:35 pm - 6:17 pmICN-ONT

14h 42m1 stop

6:58 pm - 6:35 pmONT-ICN

31h 37m1 stop

$598Alaska Airlines

Find Deal

Fri, Mar 6 - Fri, Jul 17

8:35 pm - 12:14 amICN-ONT

20h 39m1 stop

6:00 am - 6:35 pmONT-ICN

19h 35m1 stop

$628Hawaiian Airlines

Find Deal

Sun, Dec 21 - Thu, Dec 25

4:10 pm - 5:08 pmICN-ONT

17h 58m1 stop

6:38 am - 4:30 pmONT-ICN

16h 52m1 stop

$641Korean Air

Find Deal

Thu, Dec 25 - Sun, Jan 4

4:10 pm - 10:55 pmICN-ONT

23h 45m1 stop

6:40 am - 4:30 pmONT-ICN

16h 50m1 stop

$645Korean Air

Find Deal

Mon, Nov 17 - Wed, Dec 3

United Airlines flights from Seoul to Ontario

Our best United Airlines deals on Seoul to Ontario flight tickets

United Airlines

Dec 21

ICN12:45 pmIncheon Intl

14h 16m

1 stop

ONT10:01 amOntario

Jan 19

ONT5:05 amOntario

31h 35m

2 stops

ICN5:40 amIncheon Intl

$506

Find similar

United Airlines

Feb 1

ICN12:45 pmIncheon Intl

16h 29m

1 stop

ONT12:14 pmOntario

Feb 24

ONT6:00 amOntario

17h 15m

1 stop

ICN4:15 pmIncheon Intl

$507

Find similar

United Airlines

Nov 11

ICN12:45 pmIncheon Intl

16h 52m

1 stop

ONT12:37 pmOntario

Nov 13

ONT6:00 amOntario

17h 15m

1 stop

ICN4:15 pmIncheon Intl

$509

Find similar

Korean Air flights from Seoul to Ontario

Our best Korean Air deals on Seoul to Ontario flight tickets

Korean Air

Oct 30

ICN4:10 pmIncheon Intl

22h 31m

1 stop

ONT10:41 pmOntario

Nov 6

ONT6:00 amOntario

17h 20m

1 stop

ICN4:20 pmIncheon Intl

$640

Find similar

Korean Air

Dec 25

ICN4:10 pmIncheon Intl

17h 58m

1 stop

ONT5:08 pmOntario

Jan 4

ONT6:38 amOntario

16h 52m

1 stop

ICN4:30 pmIncheon Intl

$641

Find similar

Korean Air

Nov 17

ICN4:10 pmIncheon Intl

23h 45m

1 stop

ONT10:55 pmOntario

Dec 3

ONT6:40 amOntario

16h 50m

1 stop

ICN4:30 pmIncheon Intl

$645

Find similar

Fly from

Fly to

Route

Depart

Return

Price

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Sun 12/21

12:45 pm-10:01 am

1 stop14h 16m

Ontario

Mon 1/19

5:05 am-5:40 am

2 stops31h 35m

$506

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Sun 2/1

12:45 pm-12:14 pm

1 stop16h 29m

Ontario

Tue 2/24

6:00 am-4:15 pm

1 stop17h 15m

$507

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 11/3

8:35 pm-11:32 pm

1 stop19h 57m

Ontario

Sun 3/1

6:00 am-6:35 pm

1 stop19h 35m

$571

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Thu 12/18

8:35 pm-12:14 am

1 stop20h 39m

Ontario

Sun 2/8

6:00 am-6:35 pm

1 stop19h 35m

$583

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 2/11

8:05 pm-10:38 pm

1 stop19h 33m

Ontario

Sun 2/22

6:45 am-4:30 pm

1 stop16h 45m

$586

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 2/4

8:05 pm-10:38 pm

1 stop19h 33m

Ontario

Wed 2/25

1:00 pm-4:30 pm

2 stops34h 30m

$587

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Fri 3/6

8:35 pm-6:17 pm

1 stop14h 42m

Ontario

Fri 7/17

6:58 pm-6:35 pm

1 stop31h 37m

$598

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Sun 12/21

8:35 pm-12:14 am

1 stop20h 39m

Ontario

Thu 12/25

6:00 am-6:35 pm

1 stop19h 35m

$628

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Thu 12/25

4:10 pm-5:08 pm

1 stop17h 58m

Ontario

Sun 1/4

6:38 am-4:30 pm

1 stop16h 52m

$641

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 11/17

4:10 pm-10:55 pm

1 stop23h 45m

Ontario

Wed 12/3

6:40 am-4:30 pm

1 stop16h 50m

$645

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 Seoul 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 Seoul to Ontario?

United Airlines, China Airlines, and Air Canada are the most popular carriers operating from Seoul to Ontario

What airlines fly to Ontario?

AIR PREMIA, Asiana Airlines and Korean Air are the top three most popular airlines that fly to Ontario from Seoul according to our data. AIR PREMIA is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 9 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

When to book flights from Seoul to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Seoul to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seoul to Ontario (SEL to ONT) flight deals and tips

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

Direct flights	None

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

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How far is Seoul to Ontario by plane?
Seoul and Ontario are 5976.3 mi apart from one another. By plane, this route typically takes 14h 16m.
When did momondo last update prices for flights from Seoul to Ontario Airport?
Prices for flights from Seoul to Ontario Airport refresh daily.
How old do you have to be to fly from Seoul 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 Seoul to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

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

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

Flights from Seoul to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

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

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

If you are not ready to book a flight from Seoul 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.