Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Seoul to Los Angeles from $392

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 2/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
6:00 pm - 5:41 pm
ICN
-
ONT
16h 41m
1 stop
United Airlines Logo
6:37 pm - 5:40 am
ONT
-
ICN
18h 03m
1 stop
$510United Airlines
Thu, Feb 26 - Wed, Mar 4
United Airlines Logo
6:00 pm - 12:43 pm
ICN
-
ONT
35h 43m
2 stops
United Airlines Logo
6:15 am - 3:15 pm
ONT
-
ICN
17h 00m
1 stop
$511United Airlines
Mon, Mar 2 - Sun, Mar 8
United Airlines Logo
12:45 pm - 12:48 pm
ICN
-
ONT
17h 03m
1 stop
United Airlines Logo
6:49 pm - 4:20 am
ONT
-
ICN
17h 31m
1 stop
$512United Airlines
Wed, Mar 4 - Thu, Apr 16
Asiana Airlines Logo
12:45 pm - 12:38 pm
ICN
-
ONT
16h 53m
1 stop
Asiana Airlines Logo
6:15 am - 3:15 pm
ONT
-
ICN
17h 00m
1 stop
$529Asiana Airlines
Fri, Feb 27 - Mon, Mar 9
Hawaiian Airlines Logo
8:35 pm - 11:59 pm
ICN
-
ONT
19h 24m
1 stop
Hawaiian Airlines Logo
6:00 am - 6:35 pm
ONT
-
ICN
20h 35m
1 stop
$579Hawaiian Airlines
Thu, Apr 9 - Mon, Apr 13
United Airlines Logo
11:45 am - 12:18 pm
ICN
-
ONT
16h 33m
1 stop
United Airlines Logo
6:00 am - 3:00 pm
ONT
-
ICN
17h 00m
1 stop
$580United Airlines
Tue, Mar 10 - Mon, Aug 10
Multiple Airlines Logo
8:35 pm - 11:08 am
ICN
-
ONT
31h 33m
1 stop
Multiple Airlines Logo
4:02 pm - 6:35 pm
ONT
-
ICN
33h 33m
1 stop
$593Multiple Airlines
Mon, Feb 23 - Sat, Feb 28
Multiple Airlines Logo
8:35 pm - 11:32 pm
ICN
-
ONT
19h 57m
1 stop
Multiple Airlines Logo
6:00 am - 5:30 pm
ONT
-
ICN
19h 30m
1 stop
$601Multiple Airlines
Sat, Feb 21 - Fri, May 1
Alaska Airlines Logo
7:35 pm - 11:58 pm
ICN
-
ONT
20h 23m
1 stop
Alaska Airlines Logo
4:03 pm - 5:30 pm
ONT
-
ICN
33h 27m
1 stop
$616Alaska Airlines
Wed, May 27 - Wed, Jun 3
Hawaiian Airlines Logo
8:35 pm - 11:32 pm
ICN
-
ONT
19h 57m
1 stop
Hawaiian Airlines Logo
4:02 pm - 6:35 pm
ONT
-
ICN
33h 33m
1 stop
$626Hawaiian Airlines
Mon, Feb 23 - Fri, Feb 27

Alaska Airlines flights from Seoul to Ontario

Our best Alaska Airlines deals on Seoul to Ontario flight tickets
Alaska Airlines
May 27
ICN7:35 pmIncheon Intl
20h 23m
1 stop
ONT11:58 pmOntario
Jun 3
ONT4:03 pmOntario
33h 27m
1 stop
ICN5:30 pmIncheon Intl
$616
Alaska Airlines
Jun 3
ICN7:35 pmIncheon Intl
15h 12m
1 stop
ONT6:47 pmOntario
Jun 13
ONT6:00 amOntario
19h 30m
1 stop
ICN5:30 pmIncheon Intl
$696
Alaska Airlines
May 11
ICN7:35 pmIncheon Intl
20h 13m
2 stops
ONT11:48 pmOntario
May 20
ONT6:00 amOntario
19h 30m
1 stop
ICN5:30 pmIncheon Intl
$737

China Airlines flights from Seoul to Ontario

Our best China Airlines deals on Seoul to Ontario flight tickets
China Airlines
Jun 17
ICN8:05 pmIncheon Intl
37h 55m
1 stop
ONT6:00 pmOntario
Jun 23
ONT12:10 amOntario
26h 55m
1 stop
ICN7:05 pmIncheon Intl
$735
China Airlines
Apr 15
ICN8:05 pmIncheon Intl
37h 55m
1 stop
ONT6:00 pmOntario
Nov 25
ONT10:50 pmOntario
19h 30m
1 stop
ICN11:20 amIncheon Intl
$736
China Airlines
May 11
ICN8:05 pmIncheon Intl
37h 55m
1 stop
ONT6:00 pmOntario
May 17
ONT12:10 amOntario
19h 20m
1 stop
ICN11:30 amIncheon Intl
$739

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 February 12, 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

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Thu 2/26

6:00 pm-5:41 pm

1 stop16h 41m

Ontario

Wed 3/4

6:37 pm-5:40 am

1 stop18h 03m

$510

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 3/2

6:00 pm-12:43 pm

2 stops35h 43m

Ontario

Sun 3/8

6:15 am-3:15 pm

1 stop17h 00m

$511

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 3/4

12:45 pm-12:48 pm

1 stop17h 03m

Ontario

Thu 4/16

6:49 pm-4:20 am

1 stop17h 31m

$512

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Fri 2/27

12:45 pm-12:38 pm

1 stop16h 53m

Ontario

Mon 3/9

6:15 am-3:15 pm

1 stop17h 00m

$529

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Thu 4/9

8:35 pm-11:59 pm

1 stop19h 24m

Ontario

Mon 4/13

6:00 am-6:35 pm

1 stop20h 35m

$579

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Tue 3/10

11:45 am-12:18 pm

1 stop16h 33m

Ontario

Mon 8/10

6:00 am-3:00 pm

1 stop17h 00m

$580

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 2/23

8:35 pm-11:08 am

1 stop31h 33m

Ontario

Sat 2/28

4:02 pm-6:35 pm

1 stop33h 33m

$593

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Sat 2/21

8:35 pm-11:32 pm

1 stop19h 57m

Ontario

Fri 5/1

6:00 am-5:30 pm

1 stop19h 30m

$601

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 5/27

7:35 pm-11:58 pm

1 stop20h 23m

Ontario

Wed 6/3

4:03 pm-5:30 pm

1 stop33h 27m

$616

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 2/23

8:35 pm-11:32 pm

1 stop19h 57m

Ontario

Fri 2/27

4:02 pm-6:35 pm

1 stop33h 33m

$626

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

United Airlines, Japan Airlines, and China Airlines 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 53% 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.

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 26m

Direct flights

None
The fastest flight from Seoul to Ontario takes 14h 26m
There are no direct flights from Seoul to Ontario. There are no popular flight routes from Seoul to Ontario.
Search flight deals

  • 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 26m.

  • 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.

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 3/14
Sat 3/21
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States