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Cheap flights from Incheon Intl Airport to Los Angeles from $545

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 10/20. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Incheon Intl Airport 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
1:18 pm - 4:20 am
ONT
-
ICN
23h 02m
2 stops
$870United Airlines
Tue, Jun 30 - Wed, Aug 12
United Airlines Logo
6:00 pm - 8:20 pm
ICN
-
ONT
42h 20m
2 stops
United Airlines Logo
1:33 pm - 4:15 pm
ONT
-
ICN
33h 42m
1 stop
$872United Airlines
Mon, Oct 26 - Fri, Nov 6
United Airlines Logo
11:30 am - 8:01 pm
ICN
-
ONT
24h 31m
1 stop
United Airlines Logo
1:52 pm - 3:00 pm
ONT
-
ICN
33h 08m
1 stop
$876United Airlines
Mon, Sep 21 - Mon, Oct 19
United Airlines Logo
11:30 am - 12:12 pm
ICN
-
ONT
16h 42m
1 stop
United Airlines Logo
6:00 am - 3:00 pm
ONT
-
ICN
17h 00m
1 stop
$885United Airlines
Thu, Jul 2 - Mon, Aug 10
United Airlines Logo
11:30 am - 12:12 pm
ICN
-
ONT
16h 42m
1 stop
United Airlines Logo
6:00 am - 3:00 pm
ONT
-
ICN
17h 00m
1 stop
$887United Airlines
Thu, Jul 16 - Fri, Jul 31
United Airlines Logo
11:30 am - 12:12 pm
ICN
-
ONT
16h 42m
1 stop
United Airlines Logo
1:18 pm - 4:20 am
ONT
-
ICN
23h 02m
2 stops
$894United Airlines
Thu, Jul 23 - Sun, Aug 16
Asiana Airlines Logo
4:50 pm - 10:37 pm
ICN
-
ONT
21h 47m
1 stop
Asiana Airlines Logo
6:39 pm - 4:20 am
ONT
-
ICN
17h 41m
1 stop
$944Asiana Airlines
Tue, Jun 30 - Wed, Jul 8
Asiana Airlines Logo
11:30 am - 10:03 am
ICN
-
ONT
14h 33m
1 stop
Asiana Airlines Logo
6:00 am - 4:15 pm
ONT
-
ICN
17h 15m
1 stop
$953Asiana Airlines
Wed, Oct 21 - Mon, Dec 7
United Airlines Logo
12:45 pm - 9:57 am
ICN
-
ONT
14h 12m
1 stop
United Airlines Logo
6:00 am - 4:15 pm
ONT
-
ICN
17h 15m
1 stop
$996United Airlines
Thu, Nov 19 - Tue, Nov 24
United Airlines Logo
6:00 pm - 3:27 pm
ICN
-
ONT
14h 27m
1 stop
United Airlines Logo
6:00 am - 4:15 pm
ONT
-
ICN
17h 15m
1 stop
$998United Airlines
Thu, Nov 19 - Wed, Jan 13

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China Airlines flights from Incheon Intl Airport to Ontario

Our best China Airlines deals on Incheon Intl Airport to Ontario flight tickets
China Airlines
Nov 25
ICN12:30 pmIncheon Intl
21h 20m
1 stop
ONT4:50 pmOntario
Feb 17
ONT10:50 pmOntario
27h 25m
1 stop
ICN7:15 pmIncheon Intl
$1,146
China Airlines
Jun 19
ICN1:20 pmIncheon Intl
20h 40m
1 stop
ONT6:00 pmOntario
Jun 25
ONT12:10 amOntario
26h 55m
1 stop
ICN7:05 pmIncheon Intl
$1,184
China Airlines
Oct 4
ICN8:35 pmIncheon Intl
37h 25m
1 stop
ONT6:00 pmOntario
Oct 10
ONT12:10 amOntario
27h 25m
1 stop
ICN7:35 pmIncheon Intl
$1,195

Delta flights from Incheon Intl Airport to Ontario

Our best Delta deals on Incheon Intl Airport to Ontario flight tickets
Delta
Oct 19
ICN7:00 pmIncheon Intl
14h 17m
1 stop
ONT5:17 pmOntario
Nov 25
ONT7:00 amOntario
17h 55m
1 stop
ICN5:55 pmIncheon Intl
$1,203
Delta
Nov 16
ICN6:45 pmIncheon Intl
15h 32m
1 stop
ONT5:17 pmOntario
Jan 10
ONT7:00 amOntario
17h 55m
1 stop
ICN5:55 pmIncheon Intl
$1,206
Delta
Oct 1
ICN7:00 pmIncheon Intl
14h 20m
1 stop
ONT5:20 pmOntario
Oct 9
ONT6:00 amOntario
17h 20m
1 stop
ICN3:20 pmIncheon Intl
$1,231

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 June 9, 2026.
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

Cheapest round-trip

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Tue 6/30

4:50 pm-10:37 pm

1 stop21h 47m

Ontario

Wed 8/12

1:18 pm-4:20 am

2 stops23h 02m

$870

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 10/26

6:00 pm-8:20 pm

2 stops42h 20m

Ontario

Fri 11/6

1:33 pm-4:15 pm

1 stop33h 42m

$872

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 9/21

11:30 am-8:01 pm

1 stop24h 31m

Ontario

Mon 10/19

1:52 pm-3:00 pm

1 stop33h 08m

$876

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Thu 7/2

11:30 am-12:12 pm

1 stop16h 42m

Ontario

Mon 8/10

6:00 am-3:00 pm

1 stop17h 00m

$885

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Thu 7/16

11:30 am-12:12 pm

1 stop16h 42m

Ontario

Fri 7/31

6:00 am-3:00 pm

1 stop17h 00m

$887

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Thu 7/23

11:30 am-12:12 pm

1 stop16h 42m

Ontario

Sun 8/16

1:18 pm-4:20 am

2 stops23h 02m

$894

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Tue 6/30

4:50 pm-10:37 pm

1 stop21h 47m

Ontario

Wed 7/8

6:39 pm-4:20 am

1 stop17h 41m

$944

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 10/21

11:30 am-10:03 am

1 stop14h 33m

Ontario

Mon 12/7

6:00 am-4:15 pm

1 stop17h 15m

$953
Quickest round-trip

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Thu 11/19

12:45 pm-9:57 am

1 stop14h 12m

Ontario

Tue 11/24

6:00 am-4:15 pm

1 stop17h 15m

$996

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Thu 11/19

6:00 pm-3:27 pm

1 stop14h 27m

Ontario

Wed 1/13

6:00 am-4:15 pm

1 stop17h 15m

$998

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 and Alaska Airlines are the most popular carriers operating from Incheon Intl 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 Incheon Intl Airport 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 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

Fastest flight time

14h 21m

Direct flights

None
The fastest flight from Incheon Intl Airport to Ontario takes 14h 21m
There are no direct flights from Incheon Intl Airport to Ontario. There are no popular flight routes from Incheon Intl Airport to Ontario.
Search flight deals

Frequently asked questions about flying from Incheon Intl Airport to Ontario

  • How far is Incheon Intl to Ontario by plane?

    Incheon Intl and Ontario are 6003.0 mi apart from one another. 14h 21m 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 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.

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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