What are the cheapest airlines flying from Ontario to Incheon Intl Airport round-trip?

According to our current data, China Airlines ($979), Korean Air ($1,360), and Delta ($1,375) offers the cheapest pricing from Ontario to Incheon Intl Airport. These flights start at 20% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from Ontario to Incheon Intl Airport one-way?

$574 is the cheapest one-way deal found within the past few days, from China Airlines. You may also be able to find cheap deals on WestJet and Philippine Airlines, with prices starting from $579 and $725, respectively.

What is the cheapest day to fly from Ontario to Incheon Intl Airport?

Travelers seeking maximum savings on their Ontario to Incheon Intl Airport flight should consider departing on Thursday mornings when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from Ontario to Incheon Intl Airport?

Travelers have found that booking a Thursday departure is the best way to save up to 57% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

How far in advance should I book a flight from Ontario to Incheon Intl Airport?

To save on the cost of your flight from Ontario to Incheon Intl Airport, book at least 12 days before your planned departure. Booking around this time can save you about 23% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $661 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $937.

What is the cheapest month to fly from Ontario to Incheon Intl Airport?

February can be a great time to fly to Incheon Intl Airport from Ontario with a flight ticket averaging about $1,104. Cheapflights users have found deals in the month of February for as cheap as $413. The most expensive prices can be found in the month of June.

Most accurate provider : When it comes to deals on Ontario-Incheon Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Incheon Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Incheon Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ontario-Incheon Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Incheon Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from Ontario to Incheon Intl?

Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Incheon Intl. 2 airlines have flights from Ontario to Incheon Intl on a regular basis. Booking flights from Ontario to Incheon Intl should not be difficult; the airport handles an average of 0 outbound flights to Incheon Intl per day.

Can I find deals for flights from Ontario to Incheon Intl that include hotel bookings?

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

How can I find direct flights from Ontario to Incheon Intl?

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

Can I find deals for business class flights from Ontario to Incheon Intl?

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

$423+ Save on Flights from Ontario to Incheon Intl Airport

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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 Incheon Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$977 (Trip.com)
One-way from	$423 (Trip.com)
Popular in	June
Cheapest in	August
Average price	$1,111

Provider with most accurate pricing for Ontario-Incheon Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ontario-Incheon Intl flights.

Search Deals

From Ontario to Incheon Intl

Search Deals

One-way flight from Ontario to Incheon Intl

Search Deals

Highest demand for flights based on searches. 17% potential increase in price ($260 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

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Find flight deals from Ontario to Incheon Intl

Cheapest flights from Ontario to Incheon Intl
Explore the most affordable flight options available from Ontario to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Tue 10/2112:10 amONT - ICN

1 stop19h 05mChina Airlines

Tue 10/2812:25 pmICN - ONT

1 stop21h 25mChina Airlines

Deal found 3/24

$972

Sat 5/108:24 amONT - ICN

1 stop20h 06mMultiple Airlines

Sun 5/256:20 pmICN - ONT

1 stop21h 16mMultiple Airlines

Deal found 3/25

$977

Wed 3/265:40 amONT - ICN

1 stop18h 15mKorean Air

Wed 4/24:40 pmICN - ONT

1 stop16h 02mKorean Air

Deal found 3/24

$1,336

Best flights from Ontario to Incheon Intl
Discover carefully curated flight deals from Ontario to Incheon Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 25, 2025.

Sat 5/108:24 amONT - ICN

1 stop20h 06mMultiple Airlines

Sun 5/256:20 pmICN - ONT

1 stop21h 16mMultiple Airlines

Deal found 3/25

$977

Tue 4/812:10 amONT - ICN

1 stop27h 25mChina Airlines

Wed 6/48:35 pmICN - ONT

1 stop37h 25mChina Airlines

Deal found 3/24

$979

Mon 9/157:00 amONT - ICN

1 stop17h 40mKorean Air

Mon 9/224:40 pmICN - ONT

1 stop16h 42mKorean Air

Deal found 3/24

$1,360

Thu 4/105:40 amONT - ICN

1 stop18h 50mDelta

Wed 4/167:20 pmICN - ONT

1 stop19h 23mDelta

Deal found 3/23

$1,375

Wed 4/2311:59 pmONT - ICN

1 stop23h 31mAmerican Airlines

Wed 4/305:25 pmICN - ONT

1 stop20h 45mAmerican Airlines

Deal found 3/24

$1,418

Wed 4/237:05 amONT - ICN

1 stop15h 55mUnited Airlines

Thu 5/154:50 pmICN - ONT

1 stop13h 35mUnited Airlines

Deal found 3/25

$1,475

Tue 5/2711:46 amONT - ICN

2 stops38h 59mWestJet

Thu 6/128:45 pmICN - ONT

2 stops36h 20mWestJet

Deal found 3/25

$1,491

Mon 9/111:39 amONT - ICN

2 stops37h 26mQatar Airways

Sun 9/71:20 amICN - ONT

2 stops38h 39mQatar Airways

Deal found 3/24

$1,534

Last-minute flights from Ontario to Incheon Intl
Discover last-minute flight deals from Ontario to Incheon Intl. Data last updated March 25, 2025 and is based on user searches.

Wed 3/265:40 amONT - ICN

1 stop18h 15mKorean Air

Wed 4/24:40 pmICN - ONT

1 stop16h 02mKorean Air

Deal found 3/24

$1,336

Wed 3/265:40 amONT - ICN

1 stop18h 35mDelta

Wed 4/24:40 pmICN - ONT

1 stop16h 02mDelta

Deal found 3/23

$1,375

Sun 3/3011:59 pmONT - ICN

1 stop23h 31mAmerican Airlines

Sun 4/65:25 pmICN - ONT

1 stop20h 45mAmerican Airlines

Deal found 3/25

$1,425

Mon 3/318:26 amONT - ICN

1 stop20h 04mMultiple Airlines

Mon 4/79:30 pmICN - ONT

2 stops33h 34mMultiple Airlines

Deal found 3/25

$998

Mon 3/315:40 amONT - ICN

1 stop19h 00mKorean Air

Fri 4/44:40 pmICN - ONT

1 stop16h 04mKorean Air

Deal found 3/25

$1,429

Mon 3/316:00 amONT - ICN

1 stop17h 00mUnited Airlines

Wed 4/3011:30 amICN - ONT

1 stop15h 35mUnited Airlines

Deal found 3/24

$1,475

Mon 3/317:17 pmONT - ICN

2 stops31h 43mAlaska Airlines

Sun 4/69:25 pmICN - ONT

2 stops42h 34mAlaska Airlines

Deal found 3/24

$1,833

Mon 3/317:00 amONT - ICN

2 stops41h 40mKLM

Sun 4/610:25 pmICN - ONT

2 stops40h 11mKLM

Deal found 3/25

$2,134

Mon 3/316:39 pmONT - ICN

2 stops29h 26mAir Canada

Mon 4/75:45 pmICN - ONT

2 stops21h 10mAir Canada

Deal found 3/25

$5,495

Tue 4/112:10 amONT - ICN

1 stop27h 25mChina Airlines

Wed 6/48:35 pmICN - ONT

1 stop37h 25mChina Airlines

Deal found 3/24

$995

Tue 4/15:40 amONT - ICN

1 stop18h 50mDelta

Tue 4/87:20 pmICN - ONT

1 stop19h 04mDelta

Deal found 3/25

$1,375

Tue 4/16:00 amONT - ICN

2 stops43h 05mQatar Airways

Wed 4/91:20 amICN - ONT

2 stops38h 39mQatar Airways

Deal found 3/24

$2,129

One-way flights from Ontario to Incheon Intl
Search for one-way flight options from Ontario to Incheon Intl. Find affordable one-way fares based on user searches. Data last updated March 25, 2025.

Sat 5/108:24 amONT - ICN

1 stop20h 06mMultiple Airlines

Deal found 3/24

$423

Sun 9/712:45 amONT - ICN

1 stop26h 50mChina Airlines

Deal found 3/24

$574

Tue 9/167:00 amONT - ICN

2 stops43h 45mWestJet

Deal found 3/24

$579

Fri 4/46:00 amONT - ICN

2 stops45h 20mPhilippine Airlines

Deal found 3/24

$725

Tue 4/225:45 amONT - ICN

1 stop18h 55mKorean Air

Deal found 3/24

$759

Tue 9/1611:59 pmONT - ICN

1 stop23h 31mAmerican Airlines

Deal found 3/24

$777

Thu 4/247:05 amONT - ICN

1 stop15h 55mUnited Airlines

Deal found 3/25

$781

Tue 5/610:59 pmONT - ICN

2 stops55h 06mEtihad Airways

Deal found 3/24

$797

Fri 5/309:50 amONT - ICN

1 stop17h 10mHawaiian Airlines

Deal found 3/25

$948

Mon 4/216:00 amONT - ICN

2 stops43h 05mQatar Airways

Deal found 3/24

$1,071

Mon 6/26:00 amONT - ICN

2 stops18h 05mAir Canada

Deal found 3/24

$1,384

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Incheon Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sat 5/10

8:24 am-8:30 pm

1 stop20h 06m

Incheon Intl

Sun 5/25

6:20 pm-11:36 pm

1 stop21h 16m

$977

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Tue 4/8

12:10 am-7:35 pm

1 stop27h 25m

Incheon Intl

Wed 6/4

8:35 pm-6:00 pm

1 stop37h 25m

$979

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 9/15

7:00 am-4:40 pm

1 stop17h 40m

Incheon Intl

Mon 9/22

4:40 pm-5:22 pm

1 stop16h 42m

$1,360

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Thu 4/10

5:40 am-4:30 pm

1 stop18h 50m

Incheon Intl

Wed 4/16

7:20 pm-10:43 pm

1 stop19h 23m

$1,375

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 4/23

11:59 pm-3:30 pm

1 stop23h 31m

Incheon Intl

Wed 4/30

5:25 pm-10:10 pm

1 stop20h 45m

$1,418

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 4/23

7:05 am-3:00 pm

1 stop15h 55m

Incheon Intl

Thu 5/15

4:50 pm-2:25 pm

1 stop13h 35m

$1,475

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Tue 5/27

11:46 am-6:45 pm

2 stops38h 59m

Incheon Intl

Thu 6/12

8:45 pm-5:05 pm

2 stops36h 20m

$1,491

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 9/1

11:39 am-5:05 pm

2 stops37h 26m

Incheon Intl

Sun 9/7

1:20 am-11:59 pm

2 stops38h 39m

$1,534

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sat 5/10

8:24 am-8:30 pm

1 stop20h 06m

$423

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sun 9/7

12:45 am-7:35 pm

1 stop26h 50m

$574

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 19 results

Compare providers for flights from Ontario to Incheon Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Incheon Intl in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Ontario-Incheon Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Incheon Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Incheon Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ontario-Incheon Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Incheon Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Incheon Intl

Have a flexible travel schedule? Discover the best time to fly to Incheon Intl 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 Incheon Intl Airport

What is the cheapest month to book a flight from Ontario to Incheon Intl Airport?

Currently, February is the cheapest month in which you can book a flight from Ontario to Incheon Intl Airport (average of $1,002). Flying from Ontario to Incheon Intl Airport in June is currently the most expensive (average of $1,664). 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 ICN?

It’s typically best to fly out from Ontario to Incheon Intl Airport at noon. Doing so could potentially save you 17% on the flight price compared to flying in the morning, which is usually more expensive.

Rainfall in Incheon Intl by month

In terms of precipitation, rainfall in Incheon Intl Airport 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 Incheon Intl Airport when rainfall is around 0.8 in.

Temperature in Incheon Intl by month

If weather is an important factor for your trip to Incheon Intl Airport, 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 Incheon Intl

Read through reviews of airlines operating flights from Ontario to Seoul, such as Korean Air, China Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Korean Air

8.4

Very good

1,047 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Korean Air

8.4

Very good

1,047 reviews

Korean Air

8.4

Very good

1,047 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

China Airlines

8.2

Very good

722 reviews

Korean Air

8.4

Very good

1,047 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Delta

8.0

Very good

7,890 reviews

Korean Air

8.4

Very good

1,047 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Hawaiian Airlines

7.9

Good

2,330 reviews

Korean Air

8.4

Very good

1,047 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Qatar Airways

7.4

Good

3,540 reviews

Korean Air

8.4

Very good

1,047 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Related info for your journey

What airport do you fly from for flights from Ontario to Incheon Intl?
Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Incheon Intl. 2 airlines have flights from Ontario to Incheon Intl on a regular basis. Booking flights from Ontario to Incheon Intl should not be difficult; the airport handles an average of 0 outbound flights to Incheon Intl per day.
What are the cheapest airlines flying from Ontario to Incheon Intl Airport round-trip?
According to our current data, China Airlines ($979), Korean Air ($1,360), and Delta ($1,375) offers the cheapest pricing from Ontario to Incheon Intl Airport. These flights start at 20% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Ontario to Incheon Intl Airport one-way?
$574 is the cheapest one-way deal found within the past few days, from China Airlines. You may also be able to find cheap deals on WestJet and Philippine Airlines, with prices starting from $579 and $725, respectively.
Can I find deals for flights from Ontario to Incheon Intl that include hotel bookings?
Yes. In addition to deals on Ontario to Incheon Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Incheon Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Incheon Intl.
Can I find deals for business class flights from Ontario to Incheon Intl?
Yes. Cheapflights offers flight deals from Ontario to Incheon Intl 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 Incheon Intl Airport?
Currently, February is the cheapest month in which you can book a flight from Ontario to Incheon Intl Airport (average of $1,002). Flying from Ontario to Incheon Intl Airport in June is currently the most expensive (average of $1,664). 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

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Top 2 airlines flying from Ontario to Incheon Intl

Airline	Cheapest	Average	Flexibility	On-time
China Airlines	Cheapest$961	Average$1,061	FlexibilityNo cancel fee	On-time70%
Korean Air	Cheapest$1,111	Average$1,199	FlexibilityNo cancel fee	On-time81%

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$423+ Cheap flights from Ontario (ONT) to Incheon Intl (ICN)

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Incheon Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Incheon Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Incheon Intl

Cheapest flights from Ontario to Incheon IntlExplore the most affordable flight options available from Ontario to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Explore the most affordable flight options available from Ontario to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Incheon Intl Airport that are best for you.

Compare providers for flights from Ontario to Incheon Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Incheon Intl in March.

Best time to book a flight from Ontario to Incheon Intl

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

Cheapflights Insights

Everything you need to know about your flight from Ontario to Incheon Intl Airport

What is the cheapest month to book a flight from Ontario to Incheon Intl Airport?

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

Find hourly flight availability from Ontario to Incheon Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 25, 2025.

Rainfall in Incheon Intl by month

Plan your trip to Incheon Intl by taking into account the average rainfall totals by month.

Temperature in Incheon Intl by month

Plan your trip to Incheon Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Incheon Intl

Read through reviews of airlines operating flights from Ontario to Seoul, such as Korean Air, China Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Incheon Intl. 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 Incheon Intl?

What are the cheapest airlines flying from Ontario to Incheon Intl Airport round-trip?

What are the cheapest airlines to fly from Ontario to Incheon Intl Airport one-way?

Can I find deals for flights from Ontario to Incheon Intl that include hotel bookings?

How can I find direct flights from Ontario to Incheon Intl?

Can I find deals for business class flights from Ontario to Incheon Intl?

What is the cheapest month to book a flight from Ontario to Incheon Intl Airport?

Traveling to a place near Ontario?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Incheon Intl

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

Top 2 airlines flying from Ontario to Incheon Intl

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Cheapest flights from Ontario to Incheon Intl
Explore the most affordable flight options available from Ontario to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.