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Incheon Intl

$340+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ICN
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheap flight deals from Ontario to Incheon Intl

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Incheon Intl (ICN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated junio 12, 2025.

Round-trip from

$927
(Kiwi.com)

One-way from

$340
(Hawaiian Airlines)

Popular in

July

Cheapest in

August

Average price

$1,615
From Ontario to Incheon Intl
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One-way flight from Ontario to Incheon Intl
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Highest demand for flights based on searches. 4% potential increase in price ($65 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/149:41 pmONT - ICN
1 stop30h 49mMultiple Airlines
mié. 9/2410:10 pmICN - ONT
1 stop39h 00mMultiple Airlines
Deal found 6/12$927
This flugladen.de deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/3112:45 amONT - ICN
1 stop18h 30mChina Airlines
mar. 9/98:35 pmICN - ONT
1 stop38h 05mChina Airlines
Deal found 6/11$928
This Alaska Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/286:00 amONT - ICN
1 stop20h 35mAlaska Airlines
lun. 10/138:35 pmICN - ONT
1 stop19h 24mAlaska Airlines
Deal found 6/10$1,100
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/211:59 pmONT - ICN
1 stop23h 31mAmerican Airlines
mar. 10/145:25 pmICN - ONT
1 stop20h 35mAmerican Airlines
Deal found 6/12$1,150
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/2710:56 pmONT - ICN
2 stops43h 49mEtihad Airways
vie. 10/101:35 amICN - ONT
2 stops35h 54mEtihad Airways
Deal found 6/10$1,249

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Incheon Intl 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, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
Use the filters below to find and compare flights from Ontario to Incheon Intl Airport that are best for you.

Fly from

Ontario

Fly to

Incheon Intl

Route

Depart

Return

Price

OntarioIncheon

ONT - ICN

ONTICN

Ontario

dom. 9/14

9:41 pm-8:30 pm

1 stop30h 49m

Incheon Intl

mié. 9/24

10:10 pm-9:10 pm

1 stop39h 00m

$927

OntarioIncheon

ONT - ICN

ONTICN

Ontario

dom. 8/31

12:45 am-11:15 am

1 stop18h 30m

Incheon Intl

mar. 9/9

8:35 pm-6:40 pm

1 stop38h 05m

$928

OntarioIncheon

ONT - ICN

ONTICN

Ontario

dom. 9/28

6:00 am-6:35 pm

1 stop20h 35m

Incheon Intl

lun. 10/13

8:35 pm-11:59 pm

1 stop19h 24m

$1,100

OntarioIncheon

ONT - ICN

ONTICN

Ontario

jue. 10/2

11:59 pm-3:30 pm

1 stop23h 31m

Incheon Intl

mar. 10/14

5:25 pm-10:00 pm

1 stop20h 35m

$1,150

OntarioIncheon

ONT - ICN

ONTICN

Ontario

sáb. 9/27

10:56 pm-10:45 am

2 stops43h 49m

Incheon Intl

vie. 10/10

1:35 am-9:29 pm

2 stops35h 54m

$1,249

OntarioIncheon

ONT - ICN

ONTICN

Ontario

dom. 8/24

8:35 am-7:00 pm

1 stop18h 25m

$340

OntarioIncheon

ONT - ICN

ONTICN

Ontario

dom. 9/7

12:45 am-9:00 pm

2 stops28h 15m

$530

OntarioIncheon

ONT - ICN

ONTICN

Ontario

dom. 8/10

12:45 am-7:35 pm

1 stop26h 50m

$551

OntarioIncheon

ONT - ICN

ONTICN

Ontario

vie. 8/22

8:35 am-7:00 pm

1 stop18h 25m

$595

OntarioIncheon

ONT - ICN

ONTICN

Ontario

mar. 8/12

6:58 pm-6:45 pm

2 stops31h 47m

$678

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 17 results
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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 $1,000). Flying from Ontario to Incheon Intl Airport in December is currently the most expensive (average of $1,635). 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?

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 junio 12, 2025.

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

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

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

Get insights into the airlines that provide service to Incheon Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Incheon Intl. Reviews last updated junio 12, 2025.
Read through reviews of airlines operating flights from Ontario to Seoul, such as EVA Air, Korean Air and China Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,088 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
China Airlines
8.3
Very good
738 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Alaska Airlines
8.0
Very good
10,000 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Delta
8.0
Very good
7,950 reviews
EVA Air
8.4
Very good
1,202 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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?

    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 ($928), Alaska Airlines ($1,100), and American Airlines ($1,150) offers the cheapest pricing from Ontario to Incheon Intl Airport. These flights start at 28% 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?

    $340 is the cheapest one-way deal found within the past few days, from Hawaiian Airlines. You may also be able to find cheap deals on China Airlines and Alaska Airlines, with prices starting from $551 and $595, 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 $1,000). Flying from Ontario to Incheon Intl Airport in December is currently the most expensive (average of $1,635). 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

Traveling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Suwon
Seongnam
Daejeon

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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.
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Top 2 airlines flying from Ontario to Incheon Intl

Discover the top 2 airlines that operate flights from Ontario to Incheon Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$984Average$1,119FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$1,111Average$1,246FlexibilityNo cancel feeOn-time81%

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