What are the cheapest airlines to fly from Ontario to South Korea one-way?

The cheapest airlines for a one-way flight from Ontario to South Korea are China Airlines ($522), WestJet ($564), and Alaska Airlines ($595).

What are the most popular routes from Ontario to South Korea?

While some choose either Ontario - Seoul Gimpo Intl or Ontario - Busan Gimhae, Ontario - Incheon Intl is the most popular route from Ontario to South Korea.

How far in advance should I book a flight from Ontario to South Korea?

Users have found that booking a flight from Ontario to South Korea at least 12 days early can save you up to 9% on average compared to booking a flight this week. If booking 12 days before your flight isn’t an option for you, users have found flights from Ontario to South Korea for as little as $685 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $897 for flights departing within the next 3 days.

What is the cheapest month to fly from Ontario to South Korea?

February is one of the best times of the year to fly to South Korea from Ontario. Prices for February average $1,080 per person but you can even find prices for as low as $412. The most expensive prices can be found in the month of June. Opting for a February flight can save you 37% on your journey compared to booking in June

What airport do you fly from for flights from Ontario to South Korea?

If you book a flight to South Korea from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

Can I find deals for flights from Ontario to South Korea that include hotel bookings?

Yes. In addition to deals on Ontario to South Korea flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to South Korea?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to South Korea.

Can I find deals for business class flights from Ontario to South Korea?

Yes. Cheapflights offers flight deals from Ontario to South Korea by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$1,222+ Flights from Ontario to South Korea

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheap flight deals from Ontario to South Korea

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$905 (oojo)
One-way from	$426 (Trip.com)
Popular in	June
Cheapest in	February
Average price	$885

Provider with most accurate pricing for Los Angeles-Seoul (SEL) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Los Angeles-Seoul (SEL) flights.

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From Ontario to South Korea

Search Deals

One-way flight from Ontario to South Korea

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($251 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Ontario to South Korea

Cheapest flights from Ontario to South Korea
Explore the most affordable flight options available from Ontario to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 16, 2025.

mié. 8/2712:45 amONT - ICN

1 stop18h 30mChina Airlines

dom. 8/318:35 pmICN - ONT

1 stop38h 05mChina Airlines

Deal found 4/16

$885

dom. 10/512:10 amONT - PUS

1 stop19h 05mChina Airlines

mar. 10/148:00 pmPUS - ONT

1 stop38h 00mChina Airlines

Deal found 4/16

$905

dom. 5/259:41 pmONT - ICN

2 stops53h 59mMultiple Airlines

vie. 6/136:20 pmICN - ONT

1 stop21h 19mMultiple Airlines

Deal found 4/16

$949

dom. 8/247:10 amONT - ICN

2 stops19h 50mAlaska Airlines

mié. 9/109:25 pmICN - ONT

2 stops32h 41mAlaska Airlines

Deal found 4/16

$1,110

dom. 10/512:10 amONT - PUS

1 stop19h 05mMultiple Airlines

mar. 10/149:35 pmPUS - ONT

2 stops35h 30mMultiple Airlines

Deal found 4/16

$1,232

dom. 9/2811:00 pmONT - ICN

2 stops55h 05mEtihad Airways

mié. 10/151:35 amICN - ONT

2 stops36h 06mEtihad Airways

Deal found 4/16

$1,315

lun. 4/285:45 amONT - ICN

1 stop18h 45mDelta

lun. 5/127:20 pmICN - ONT

1 stop15h 00mDelta

Deal found 4/16

$1,357

jue. 4/245:45 amONT - ICN

1 stop18h 45mKorean Air

jue. 5/224:40 pmICN - ONT

1 stop17h 40mKorean Air

Deal found 4/16

$1,364

mié. 9/246:00 amONT - ICN

1 stop20h 35mHawaiian Airlines

lun. 10/138:35 pmICN - ONT

1 stop18h 02mHawaiian Airlines

Deal found 4/15

$1,370

mié. 5/286:00 amONT - ICN

2 stops44h 45mWestJet

mar. 6/178:45 pmICN - ONT

2 stops36h 16mWestJet

Deal found 4/16

$1,400

lun. 10/66:00 amONT - TAE

2 stops22h 35mDelta

mar. 10/147:35 amTAE - ONT

2 stops31h 07mDelta

Deal found 4/16

$1,481

lun. 10/66:00 amONT - PUS

2 stops33h 45mDelta

mar. 10/1410:40 amPUS - ONT

2 stops22h 37mDelta

Deal found 4/16

$1,483

Best flights from Ontario to South Korea
Discover carefully curated flight deals from Ontario to South Korea that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated abril 16, 2025.

dom. 10/512:10 amONT - PUS

1 stop19h 05mChina Airlines

mar. 10/148:00 pmPUS - ONT

1 stop38h 00mChina Airlines

Deal found 4/16

$905

mié. 5/1412:10 amONT - ICN

1 stop27h 25mMultiple Airlines

sáb. 5/246:20 pmICN - ONT

1 stop21h 16mMultiple Airlines

Deal found 4/15

$1,095

mié. 5/74:29 pmONT - ICN

2 stops34h 31mAlaska Airlines

vie. 6/139:25 pmICN - ONT

2 stops42h 34mAlaska Airlines

Deal found 4/15

$1,139

lun. 4/285:45 amONT - ICN

1 stop18h 45mDelta

lun. 5/127:20 pmICN - ONT

1 stop15h 00mDelta

Deal found 4/16

$1,357

mar. 4/225:45 amONT - ICN

1 stop18h 55mKorean Air

mar. 5/64:40 pmICN - ONT

1 stop16h 04mKorean Air

Deal found 4/15

$1,363

lun. 4/216:00 amONT - ICN

1 stop17h 00mUnited Airlines

jue. 5/14:50 pmICN - ONT

1 stop13h 35mUnited Airlines

Deal found 4/15

$1,476

vie. 5/210:40 pmONT - ICN

2 stops55h 25mEtihad Airways

dom. 5/111:35 amICN - ONT

2 stops59h 36mEtihad Airways

Deal found 4/15

$1,492

lun. 4/2812:10 amONT - ICN

1 stop27h 25mChina Airlines

mar. 5/61:20 pmICN - ONT

1 stop20h 40mChina Airlines

Deal found 4/15

$991

mar. 7/16:00 amONT - GMP

2 stops36h 45mJapan Airlines

mar. 7/157:55 amGMP - ONT

2 stops26h 09mJapan Airlines

Deal found 4/15

$2,186

dom. 10/512:10 amONT - PUS

1 stop19h 05mMultiple Airlines

mar. 10/149:35 pmPUS - ONT

2 stops35h 30mMultiple Airlines

Deal found 4/16

$1,232

lun. 10/66:00 amONT - PUS

2 stops33h 45mDelta

mar. 10/1410:40 amPUS - ONT

2 stops22h 37mDelta

Deal found 4/16

$1,483

vie. 7/411:45 pmONT - TAE

1 stop37h 40mMultiple Airlines

sáb. 7/129:15 pmTAE - ONT

2 stops37h 25mMultiple Airlines

Deal found 4/14

$1,506

Last-minute flights from Ontario to South Korea
Discover last-minute flight deals from Ontario to South Korea. Data last updated abril 16, 2025 and is based on user searches.

jue. 4/177:05 amONT - ICN

1 stop15h 55mUnited Airlines

lun. 4/2811:30 amICN - ONT

1 stop15h 35mUnited Airlines

Deal found 4/15

$1,476

vie. 4/1812:10 amONT - GMP

2 stops26h 20mMultiple Airlines

sáb. 4/266:15 amGMP - ONT

2 stops27h 45mMultiple Airlines

Deal found 4/15

$1,973

mar. 4/225:45 amONT - ICN

1 stop18h 55mKorean Air

mar. 5/64:40 pmICN - ONT

1 stop16h 04mKorean Air

Deal found 4/15

$1,363

mar. 4/2211:59 pmONT - ICN

1 stop23h 31mAmerican Airlines

mar. 5/65:25 pmICN - ONT

2 stops20h 32mAmerican Airlines

Deal found 4/15

$1,524

jue. 4/245:45 amONT - ICN

1 stop18h 45mKorean Air

jue. 5/224:40 pmICN - ONT

1 stop17h 40mKorean Air

Deal found 4/16

$1,364

vie. 4/258:59 pmONT - ICN

2 stops54h 01mAlaska Airlines

dom. 5/49:25 pmICN - ONT

2 stops29h 26mAlaska Airlines

Deal found 4/14

$1,184

dom. 4/2712:10 amONT - ICN

2 stops31h 35mMultiple Airlines

lun. 5/1210:00 pmICN - ONT

3 stops36h 00mMultiple Airlines

Deal found 4/16

$1,175

dom. 4/276:00 amONT - ICN

2 stops43h 05mQatar Airways

mié. 5/141:20 amICN - ONT

2 stops37h 26mQatar Airways

Deal found 4/15

$1,656

lun. 4/2812:10 amONT - ICN

1 stop27h 25mChina Airlines

mar. 5/61:20 pmICN - ONT

1 stop20h 40mChina Airlines

Deal found 4/15

$991

lun. 4/285:45 amONT - ICN

1 stop18h 45mDelta

lun. 5/127:20 pmICN - ONT

1 stop15h 00mDelta

Deal found 4/16

$1,357

mar. 4/2912:10 amONT - ICN

1 stop19h 05mChina Airlines

mié. 5/1412:35 pmICN - ONT

1 stop21h 25mChina Airlines

Deal found 4/15

$991

mié. 4/3010:40 pmONT - ICN

2 stops44h 05mEtihad Airways

vie. 5/95:45 pmICN - ONT

2 stops43h 26mEtihad Airways

Deal found 4/15

$1,738

One-way flights from Ontario to South Korea
Search for one-way flight options from Ontario to South Korea. Find affordable one-way fares based on user searches. Data last updated abril 16, 2025.

vie. 4/258:10 amONT - ICN

1 stop20h 20mMultiple Airlines

Deal found 4/16

$426

mar. 8/1912:45 amONT - ICN

1 stop26h 50mChina Airlines

Deal found 4/15

$522

mar. 9/97:00 amONT - ICN

2 stops43h 45mWestJet

Deal found 4/16

$564

mié. 4/238:59 pmONT - ICN

2 stops30h 01mAlaska Airlines

Deal found 4/16

$595

vie. 4/254:29 pmONT - ICN

2 stops26h 31mEVA Air

Deal found 4/16

$718

jue. 9/186:00 amONT - ICN

1 stop20h 35mHawaiian Airlines

Deal found 4/15

$731

lun. 4/215:45 amONT - ICN

1 stop18h 55mKorean Air

Deal found 4/16

$759

lun. 9/151:42 pmONT - ICN

1 stop22h 38mUnited Airlines

Deal found 4/16

$781

mar. 4/226:00 amONT - GMP

2 stops23h 50mJapan Airlines

Deal found 4/14

$782

dom. 5/2510:59 pmONT - ICN

2 stops55h 06mEtihad Airways

Deal found 4/16

$1,176

jue. 5/296:00 amONT - ICN

1 stop18h 40mDelta

Deal found 4/16

$1,220

sáb. 6/2111:59 pmONT - GMP

2 stops29h 51mMultiple Airlines

Deal found 4/16

$1,967

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to South Korea that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioIncheon

ONT - ICN

ONTICN

Ontario

mié. 8/27

12:45 am-11:15 am

1 stop18h 30m

Incheon Intl

dom. 8/31

8:35 pm-6:40 pm

1 stop38h 05m

$885

OntarioBusan

ONT - PUS

ONTPUS

Ontario

dom. 10/5

12:10 am-11:15 am

1 stop19h 05m

Busan Gimhae

mar. 10/14

8:00 pm-6:00 pm

1 stop38h 00m

$905

OntarioIncheon

ONT - ICN

ONTICN

Ontario

dom. 5/25

9:41 pm-7:40 pm

2 stops53h 59m

Incheon Intl

vie. 6/13

6:20 pm-11:39 pm

1 stop21h 19m

$949

OntarioIncheon

ONT - ICN

ONTICN

Ontario

dom. 8/24

8:35 am-7:00 pm

1 stop18h 25m

Incheon Intl

mié. 9/10

9:25 pm-10:45 am

2 stops29h 20m

$1,110

OntarioBusan

ONT - PUS

ONTPUS

Ontario

dom. 10/5

12:10 am-11:15 am

1 stop19h 05m

Busan Gimhae

mar. 10/14

9:35 pm-5:05 pm

2 stops35h 30m

$1,232

OntarioIncheon

ONT - ICN

ONTICN

Ontario

dom. 9/28

11:00 pm-10:05 pm

2 stops55h 05m

Incheon Intl

mié. 10/15

1:35 am-9:41 pm

2 stops36h 06m

$1,315

OntarioIncheon

ONT - ICN

ONTICN

Ontario

lun. 4/28

5:45 am-4:30 pm

1 stop18h 45m

Incheon Intl

lun. 5/12

7:20 pm-6:20 pm

1 stop15h 00m

$1,357

OntarioIncheon

ONT - ICN

ONTICN

Ontario

mar. 4/29

5:45 am-4:30 pm

1 stop18h 45m

Incheon Intl

jue. 6/5

7:20 pm-6:20 pm

1 stop15h 00m

$1,364

OntarioIncheon

ONT - ICN

ONTICN

Ontario

mié. 9/24

6:00 am-6:35 pm

1 stop20h 35m

Incheon Intl

lun. 10/13

8:35 pm-10:37 pm

1 stop18h 02m

$1,370

OntarioIncheon

ONT - ICN

ONTICN

Ontario

mié. 5/28

6:00 am-6:45 pm

2 stops44h 45m

Incheon Intl

mar. 6/17

8:45 pm-5:01 pm

2 stops36h 16m

$1,400

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 27 results

Best time to book a flight from Ontario to South Korea

Have a flexible travel schedule? Discover the best time to fly to South Korea from Ontario with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to South Korea

What is the cheapest month to book a flight from Ontario to South Korea?

Currently, February is the cheapest month in which you can book a flight from Ontario to South Korea (average of $1,001). Flying from Ontario to South Korea in June is currently the most expensive (average of $1,650). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to KR?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to South Korea as you normally would.

Rainfall in South Korea by month

In terms of precipitation, rainfall in South Korea ranges from 0.8 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit South Korea when rainfall is around 0.8 in.

Temperature in South Korea by month

If weather is an important factor for your trip to South Korea, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

Reviews of airlines servicing South Korea

Get a feel of what it's like to fly with EVA Air, Korean Air and Japan Airlines from Ontario to South Korea by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.4

Very good

1,176 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

EVA Air

8.4

Very good

1,176 reviews

EVA Air

8.4

Very good

1,176 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Korean Air

8.4

Very good

1,064 reviews

EVA Air

8.4

Very good

1,176 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Japan Airlines

8.3

Very good

1,441 reviews

EVA Air

8.4

Very good

1,176 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

China Airlines

8.2

Very good

729 reviews

EVA Air

8.4

Very good

1,176 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Alaska Airlines

8.0

Very good

9,882 reviews

EVA Air

8.4

Very good

1,176 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Related info for your journey

What airport do you fly from for flights from Ontario to South Korea?
If you book a flight to South Korea from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.
What are the cheapest airlines to fly from Ontario to South Korea one-way?
The cheapest airlines for a one-way flight from Ontario to South Korea are China Airlines ($522), WestJet ($564), and Alaska Airlines ($595).
What are the most popular routes from Ontario to South Korea?
While some choose either Ontario - Seoul Gimpo Intl or Ontario - Busan Gimhae, Ontario - Incheon Intl is the most popular route from Ontario to South Korea.
Can I find deals for flights from Ontario to South Korea that include hotel bookings?
Yes. In addition to deals on Ontario to South Korea flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to South Korea?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to South Korea.
Can I find deals for business class flights from Ontario to South Korea?
Yes. Cheapflights offers flight deals from Ontario to South Korea by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ontario to South Korea?
Currently, February is the cheapest month in which you can book a flight from Ontario to South Korea (average of $1,001). Flying from Ontario to South Korea in June is currently the most expensive (average of $1,650). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Complete your trip

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Seoul car rentals

Top 2 airlines flying from Ontario to South Korea

Airline	Cheapest	Average	Flexibility	On-time
China Airlines	Cheapest$961	Average$1,073	FlexibilityNo cancel fee	On-time70%
Korean Air	Cheapest$1,111	Average$1,230	FlexibilityNo cancel fee	On-time81%

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$426+ Cheap flights from Ontario (ONT) to South Korea

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to South Korea with Cheapflights

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Cheap flight deals from Ontario to South Korea

Keep the following information in mind while searching for Ontario to South Korea flight deals. Data was last updated abril 16, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to South Korea

Cheapest flights from Ontario to South KoreaExplore the most affordable flight options available from Ontario to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 16, 2025.

Explore the most affordable flight options available from Ontario to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 16, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to South Korea that are best for you.

Best time to book a flight from Ontario to South Korea

Have a flexible travel schedule? Discover the best time to fly to South Korea from Ontario with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ontario to South Korea

What is the cheapest month to book a flight from Ontario to South Korea?

What is the cheapest time of day to fly from ONT to KR?

Find hourly flight availability from Ontario to South Korea. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated abril 16, 2025.

Rainfall in South Korea by month

Plan your trip to South Korea by taking into account the average rainfall totals by month.

Temperature in South Korea by month

Plan your trip to South Korea by taking into account the average temperature totals by month.

Reviews of airlines servicing South Korea

Related info for your journey

Find useful and relevant information for your journey from Ontario to South Korea. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Ontario to South Korea?

What are the cheapest airlines to fly from Ontario to South Korea one-way?

What are the most popular routes from Ontario to South Korea?

Can I find deals for flights from Ontario to South Korea that include hotel bookings?

How can I find direct flights from Ontario to South Korea?

Can I find deals for business class flights from Ontario to South Korea?

What is the cheapest month to book a flight from Ontario to South Korea?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to South Korea

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Ontario to South Korea

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Cheapest flights from Ontario to South Korea
Explore the most affordable flight options available from Ontario to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 16, 2025.