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Cheap flights from Incheon Intl Airport to Los Angeles from $364

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Incheon Intl Airport to Los Angeles departing on 9/15. 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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Find the cheapest flights from Incheon Intl Airport to Los Angeles (ICN-ONT)

Cheap round-trip flights

Hawaiian Airlines Logo
8:35 pm - 12:03 amICN-ONT
19h 28m1 stop
Hawaiian Airlines Logo
7:43 pm - 6:35 pmONT-ICN
30h 52m1 stop
$568Hawaiian Airlines
Find Deal
Mon, Oct 6 - Tue, Oct 21
Hawaiian Airlines Logo
8:35 pm - 12:03 amICN-ONT
19h 28m1 stop
Hawaiian Airlines Logo
7:43 pm - 6:35 pmONT-ICN
30h 52m1 stop
$569Hawaiian Airlines
Find Deal
Thu, Oct 9 - Thu, Oct 16
Alaska Airlines Logo
8:35 pm - 8:53 pmICN-ONT
17h 18m1 stop
Alaska Airlines Logo
6:00 am - 6:35 pmONT-ICN
19h 35m1 stop
$573Alaska Airlines
Find Deal
Sun, Nov 2 - Wed, Dec 3
Alaska Airlines Logo
8:35 pm - 8:53 pmICN-ONT
17h 18m1 stop
Alaska Airlines Logo
6:00 am - 6:35 pmONT-ICN
19h 35m1 stop
$593Alaska Airlines
Find Deal
Mon, Nov 10 - Sat, Nov 15
United Airlines Logo
4:50 pm - 5:40 pmICN-ONT
16h 50m1 stop
United Airlines Logo
1:53 pm - 4:20 amONT-ICN
22h 27m1 stop
$603United Airlines
Find Deal
Mon, Oct 6 - Tue, Oct 21
United Airlines Logo
4:50 pm - 5:40 pmICN-ONT
16h 50m1 stop
United Airlines Logo
6:00 am - 3:15 pmONT-ICN
17h 15m1 stop
$632United Airlines
Find Deal
Tue, Oct 21 - Thu, Oct 30
Delta Logo
7:20 pm - 10:40 pmICN-ONT
19h 20m1 stop
Delta Logo
5:05 pm - 4:30 pmONT-ICN
30h 25m2 stops
$637Delta
Find Deal
Mon, Sep 22 - Sun, Feb 15
Delta Logo
8:05 pm - 5:08 pmICN-ONT
14h 03m1 stop
Delta Logo
6:45 am - 4:30 pmONT-ICN
16h 45m1 stop
$638Delta
Find Deal
Wed, Dec 24 - Wed, Jan 7
Korean Air Logo
4:40 pm - 5:00 pmICN-ONT
16h 20m1 stop
Korean Air Logo
6:45 am - 4:30 pmONT-ICN
16h 45m1 stop
$683Korean Air
Find Deal
Mon, Sep 29 - Thu, Nov 27
Korean Air Logo
4:40 pm - 5:00 pmICN-ONT
16h 20m1 stop
Korean Air Logo
6:00 am - 4:30 pmONT-ICN
18h 30m1 stop
$709Korean Air
Find Deal
Mon, Sep 29 - Sun, Oct 5

Hawaiian Airlines flights from Incheon Intl Airport to Ontario

Our best Hawaiian Airlines deals on Incheon Intl Airport to Ontario flight tickets
Hawaiian Airlines
Oct 6
ICN8:35 pmIncheon Intl
19h 28m
1 stop
ONT12:03 amOntario
Oct 21
ONT7:43 pmOntario
30h 52m
1 stop
ICN6:35 pmIncheon Intl
$568
Find similar
Hawaiian Airlines
Oct 9
ICN8:35 pmIncheon Intl
19h 28m
1 stop
ONT12:03 amOntario
Oct 16
ONT7:43 pmOntario
30h 52m
1 stop
ICN6:35 pmIncheon Intl
$569
Find similar
Hawaiian Airlines
Sep 15
ICN8:35 pmIncheon Intl
30h 09m
1 stop
ONT10:44 amOntario
Dec 5
ONT4:15 pmOntario
33h 20m
1 stop
ICN6:35 pmIncheon Intl
$586
Find similar

United Airlines flights from Incheon Intl Airport to Ontario

Our best United Airlines deals on Incheon Intl Airport to Ontario flight tickets
United Airlines
Oct 6
ICN4:50 pmIncheon Intl
16h 50m
1 stop
ONT5:40 pmOntario
Oct 21
ONT1:53 pmOntario
22h 27m
1 stop
ICN4:20 amIncheon Intl
$603
Find similar
United Airlines
Oct 21
ICN4:50 pmIncheon Intl
16h 50m
1 stop
ONT5:40 pmOntario
Oct 30
ONT6:00 amOntario
17h 15m
1 stop
ICN3:15 pmIncheon Intl
$632
Find similar
United Airlines
Sep 20
ICN4:50 pmIncheon Intl
19h 53m
2 stops
ONT8:43 pmOntario
Sep 27
ONT6:51 pmOntario
17h 29m
1 stop
ICN4:20 amIncheon Intl
$639
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Incheon Intl Airport 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 September 9, 2025.
Use the filters below to find and compare flights from Incheon Intl Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 10/6

8:35 pm-12:03 am

1 stop19h 28m

Ontario

Tue 10/21

7:43 pm-6:35 pm

1 stop30h 52m

$568

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Thu 10/9

8:35 pm-12:03 am

1 stop19h 28m

Ontario

Thu 10/16

7:43 pm-6:35 pm

1 stop30h 52m

$569

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Sun 11/2

8:35 pm-8:53 pm

1 stop17h 18m

Ontario

Wed 12/3

6:00 am-6:35 pm

1 stop19h 35m

$573

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 11/10

8:35 pm-8:53 pm

1 stop17h 18m

Ontario

Sat 11/15

6:00 am-6:35 pm

1 stop19h 35m

$593

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 10/6

4:50 pm-5:40 pm

1 stop16h 50m

Ontario

Tue 10/21

1:53 pm-4:20 am

1 stop22h 27m

$603

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Tue 10/21

4:50 pm-5:40 pm

1 stop16h 50m

Ontario

Thu 10/30

6:00 am-3:15 pm

1 stop17h 15m

$632

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 9/22

7:20 pm-10:40 pm

1 stop19h 20m

Ontario

Sun 2/15

5:05 pm-4:30 pm

2 stops30h 25m

$637

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 12/24

8:05 pm-5:08 pm

1 stop14h 03m

Ontario

Wed 1/7

6:45 am-4:30 pm

1 stop16h 45m

$638

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 9/29

4:40 pm-5:00 pm

1 stop16h 20m

Ontario

Thu 11/27

6:45 am-4:30 pm

1 stop16h 45m

$683

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 9/29

4:40 pm-5:00 pm

1 stop16h 20m

Ontario

Sun 10/5

6:00 am-4:30 pm

1 stop18h 30m

$709

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Incheon Intl Airport 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 Incheon Intl to Ontario?

United Airlines, WestJet, and China Airlines are the most popular carriers operating from Incheon Intl 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 Incheon Intl Airport according to our data. AIR PREMIA is the first choice among our users, with 45% 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 Incheon Intl Airport to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Incheon Intl Airport to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Incheon Intl Airport to Ontario (ICN to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Incheon Intl Airport to Ontario

Direct flights

None
There are no direct flights from Incheon Intl Airport to Ontario. There are no popular flight routes from Incheon Intl Airport to Ontario.
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  • How far is Incheon Intl to Ontario by plane?

    Incheon Intl and Ontario are 6003.0 mi apart from one another. 14h 03m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Incheon Intl Airport to Ontario Airport?

    Prices for flights from Incheon Intl Airport to Ontario Airport refresh daily.

  • How many operators does momondo search for flights from Incheon Intl Airport to Ontario Airport?

  • How old do you have to be to fly from Incheon Intl Airport to Ontario Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Incheon Intl Airport to Ontario Airport.

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

    The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Incheon Intl Airport to Ontario?

Best airlines flying from Incheon Intl Airport to Ontario

Compare and see reviews for airlines that fly from Incheon Intl Airport to Ontario with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $550Free CancellationRating
7.4
8,943 reviews
Search United Airlines flights

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?

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

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

Once you have performed a search for Seoul to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Ontario from Seoul. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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