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Cheap flights from Seoul to Los Angeles from $602

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seoul to Los Angeles departing on 6/19. 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 Seoul to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
4:50 pm - 10:37 pm
ICN
-
ONT
21h 47m
1 stop
United Airlines Logo
5:00 am - 4:20 am
ONT
-
ICN
31h 20m
2 stops
$1,049United Airlines
Wed, Jun 24 - Wed, Jul 29
United Airlines Logo
11:30 am - 12:12 pm
ICN
-
ONT
16h 42m
1 stop
United Airlines Logo
1:40 pm - 4:20 am
ONT
-
ICN
22h 40m
1 stop
$1,053United Airlines
Sun, Jun 14 - Sat, Jun 20
United Airlines Logo
11:30 am - 12:12 pm
ICN
-
ONT
16h 42m
1 stop
United Airlines Logo
5:00 am - 4:20 am
ONT
-
ICN
31h 20m
2 stops
$1,157United Airlines
Wed, Jul 8 - Wed, Jul 22
United Airlines Logo
4:50 pm - 12:12 pm
ICN
-
ONT
35h 22m
1 stop
United Airlines Logo
6:00 am - 4:20 am
ONT
-
ICN
30h 20m
1 stop
$1,158United Airlines
Mon, Jun 15 - Mon, Jun 22
United Airlines Logo
4:50 pm - 10:37 pm
ICN
-
ONT
21h 47m
1 stop
United Airlines Logo
5:00 am - 4:20 am
ONT
-
ICN
31h 20m
2 stops
$1,161United Airlines
Wed, Jul 15 - Tue, Aug 11
Lufthansa Logo
11:30 am - 10:37 pm
ICN
-
ONT
27h 07m
1 stop
Lufthansa Logo
6:00 am - 3:00 pm
ONT
-
ICN
17h 00m
1 stop
$1,181Lufthansa
Fri, Jul 3 - Sun, Jul 19
Lufthansa Logo
11:30 am - 10:37 pm
ICN
-
ONT
27h 07m
1 stop
Lufthansa Logo
6:00 am - 3:00 pm
ONT
-
ICN
17h 00m
1 stop
$1,188Lufthansa
Fri, Jul 3 - Sun, Jul 19
Multiple Airlines Logo
4:30 pm - 10:10 pm
GMP
-
ONT
21h 40m
2 stops
Multiple Airlines Logo
9:31 am - 10:25 pm
ONT
-
GMP
20h 54m
2 stops
$1,691Multiple Airlines
Mon, Sep 14 - Thu, Sep 17
Multiple Airlines Logo
4:30 pm - 9:45 pm
GMP
-
ONT
21h 15m
2 stops
Multiple Airlines Logo
9:11 am - 10:25 pm
ONT
-
GMP
21h 14m
2 stops
$1,733Multiple Airlines
Wed, Jun 10 - Sun, Jun 14
Japan Airlines Logo
7:15 pm - 4:30 pm
GMP
-
ONT
37h 15m
2 stops
Japan Airlines Logo
6:02 am - 10:40 am
ONT
-
GMP
36h 38m
2 stops
$5,278Japan Airlines
Thu, Jul 9 - Thu, Jul 23

American Airlines flights from Seoul to Ontario

Our best American Airlines deals on Seoul to Ontario flight tickets
American Airlines
Oct 2
ICN5:50 pmIncheon Intl
33h 57m
1 stop
ONT11:47 amOntario
Oct 10
ONT6:47 amOntario
40h 58m
2 stops
ICN3:45 pmIncheon Intl
$1,329
American Airlines
Nov 3
ICN6:35 pmIncheon Intl
43h 36m
2 stops
ONT9:11 pmOntario
Nov 7
ONT9:59 amOntario
37h 26m
2 stops
ICN4:25 pmIncheon Intl
$1,360
American Airlines
Oct 23
ICN5:50 pmIncheon Intl
35h 37m
1 stop
ONT1:27 pmOntario
Oct 26
ONT11:12 pmOntario
49h 13m
2 stops
ICN4:25 pmIncheon Intl
$1,365

Delta flights from Seoul to Ontario

Our best Delta deals on Seoul to Ontario flight tickets
Delta
Oct 2
ICN7:00 pmIncheon Intl
14h 20m
1 stop
ONT5:20 pmOntario
Oct 8
ONT7:00 amOntario
17h 50m
1 stop
ICN4:50 pmIncheon Intl
$1,339
Delta
Oct 9
ICN7:00 pmIncheon Intl
14h 17m
1 stop
ONT5:17 pmOntario
Oct 25
ONT6:00 amOntario
19h 55m
2 stops
ICN5:55 pmIncheon Intl
$1,340
Delta
Oct 2
ICN7:00 pmIncheon Intl
20h 37m
2 stops
ONT11:37 pmOntario
Oct 9
ONT6:00 amOntario
17h 20m
1 stop
ICN3:20 pmIncheon Intl
$1,389

momondo Fare Finder

 
Customize your flight search to find flights from Seoul to Ontario 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 May 30, 2026.
Use the filters below to find and compare flights from Seoul to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 6/24

4:50 pm-10:37 pm

1 stop21h 47m

Ontario

Wed 7/29

5:00 am-4:20 am

2 stops31h 20m

$1,049
Quickest round-trip

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Sun 6/14

11:30 am-12:12 pm

1 stop16h 42m

Ontario

Sat 6/20

1:40 pm-4:20 am

1 stop22h 40m

$1,053

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 7/8

11:30 am-12:12 pm

1 stop16h 42m

Ontario

Wed 7/22

5:00 am-4:20 am

2 stops31h 20m

$1,157

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 6/15

4:50 pm-12:12 pm

1 stop35h 22m

Ontario

Mon 6/22

6:00 am-4:20 am

1 stop30h 20m

$1,158

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 7/15

4:50 pm-10:37 pm

1 stop21h 47m

Ontario

Tue 8/11

5:00 am-4:20 am

2 stops31h 20m

$1,161

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Fri 7/3

11:30 am-10:37 pm

1 stop27h 07m

Ontario

Sun 7/19

6:00 am-3:00 pm

1 stop17h 00m

$1,181

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Fri 7/3

11:30 am-10:37 pm

1 stop27h 07m

Ontario

Sun 7/19

6:00 am-3:00 pm

1 stop17h 00m

$1,188

SeoulOntario

GMP - ONT

GMPONT

Seoul Gimpo Intl

Mon 9/14

4:30 pm-10:10 pm

2 stops21h 40m

Ontario

Thu 9/17

9:31 am-10:25 pm

2 stops20h 54m

$1,691

SeoulOntario

GMP - ONT

GMPONT

Seoul Gimpo Intl

Wed 6/10

4:30 pm-9:45 pm

2 stops21h 15m

Ontario

Sun 6/14

9:11 am-10:25 pm

2 stops21h 14m

$1,733

SeoulOntario

GMP - ONT

GMPONT

Seoul Gimpo Intl

Thu 7/9

7:15 pm-4:30 pm

2 stops37h 15m

Ontario

Thu 7/23

6:02 am-10:40 am

2 stops36h 38m

$5,278

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 Los Angeles from

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

What is the cheapest airline that flies from Seoul to Ontario?

WestJet and Japan Airlines are the most popular carriers operating from Seoul 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 Seoul according to our data. AIR PREMIA is the first choice among our users, with 59% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 7 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

Fastest flight time

14h 12m

Direct flights

None
The fastest flight from Seoul to Ontario takes 14h 12m
There are no direct flights from Seoul to Ontario. There are no popular flight routes from Seoul to Ontario.
Search flight deals

Frequently asked questions about flying from Seoul to Ontario

  • 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 12m.

  • 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.

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