Incheon Intl

$410+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ICN
Apr 20 — Apr 271
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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 April 15, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$922
(Kiwi.com)

One-way from

$410
(Trip.com)

Popular in

July

Cheapest in

August

Average price

$1,188
Provider with most accurate pricing for Ontario-Incheon Intl flight deals.
Provider most trusted by Cheapflights users for Ontario-Incheon Intl flights.
From Ontario to Incheon Intl
One-way flight from Ontario to Incheon Intl
Highest demand for flights based on searches. 9% potential increase in price ($128 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
Average for round-trip flights in April 2025

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 April 15, 2025.

This oojo deal was found by Cheapflights users on 4/14. 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.
Tue 9/3012:10 amONT - ICN
1 stop27h 25mChina Airlines
Thu 10/3012:25 pmICN - ONT
1 stop21h 25mChina Airlines
Deal found 4/14$890
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
Mon 5/198:24 amONT - ICN
1 stop20h 06mMultiple Airlines
Mon 6/910:20 amICN - ONT
2 stops29h 19mMultiple Airlines
Deal found 4/14$934
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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.
Mon 4/286:24 pmONT - ICN
2 stops32h 36mAlaska Airlines
Mon 5/59:25 pmICN - ONT
2 stops27h 51mAlaska Airlines
Deal found 4/14$1,110
This WestJet deal was found by Cheapflights users on 4/14. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/256:00 amONT - ICN
2 stops44h 45mWestJet
Tue 6/108:45 pmICN - ONT
2 stops36h 16mWestJet
Deal found 4/14$1,292

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 April 15, 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

Tue 9/30

12:10 am-7:35 pm

1 stop27h 25m

Incheon Intl

Thu 10/30

12:25 pm-5:50 pm

1 stop21h 25m

$890

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sun 5/25

9:41 pm-8:30 pm

1 stop30h 49m

Incheon Intl

Mon 6/9

10:20 am-11:39 pm

2 stops29h 19m

$922

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 4/28

6:24 pm-7:00 pm

2 stops32h 36m

Incheon Intl

Mon 5/5

9:25 pm-9:16 am

2 stops27h 51m

$1,110

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sun 5/25

6:00 am-6:45 pm

2 stops44h 45m

Incheon Intl

Tue 6/10

8:45 pm-5:01 pm

2 stops36h 16m

$1,292

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Thu 10/2

7:00 am-4:40 pm

1 stop17h 40m

Incheon Intl

Tue 10/14

4:40 pm-5:17 pm

1 stop16h 37m

$1,336

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sun 4/20

8:15 am-8:30 pm

1 stop20h 15m

$410

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sun 8/3

12:45 am-11:15 am

1 stop18h 30m

$521

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Tue 9/2

7:00 am-6:45 pm

2 stops43h 45m

$578

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 4/23

8:59 pm-7:00 pm

2 stops30h 01m

$595

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 5/7

4:29 pm-7:20 pm

2 stops34h 51m

$683

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 17 results
1
2

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Ontario-Incheon Intl Airport flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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 $1,001). Flying from Ontario to Incheon Intl Airport 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 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 April 15, 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 April 15, 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.

Food

8.1

Comfort

8.3

Crew

8.6

Entertainment

8.0

Boarding

8.4

Overall

8.4

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.

Food

8.1

Comfort

8.3

Crew

8.6

Entertainment

8.0

Boarding

8.4

Overall

8.4

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.

Food

8.1

Comfort

8.3

Crew

8.6

Entertainment

8.0

Boarding

8.4

Overall

8.4

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.

Food

8.1

Comfort

8.3

Crew

8.6

Entertainment

8.0

Boarding

8.4

Overall

8.4

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.

Food

8.1

Comfort

8.3

Crew

8.6

Entertainment

8.0

Boarding

8.4

Overall

8.4

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.
8.0
Very good

Food

8.1

Comfort

8.3

Crew

8.6

Entertainment

8.0

Boarding

8.4

Overall

8.4

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

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 ($991), Alaska Airlines ($1,110), and WestJet ($1,292) 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?

    $587 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 Alaska Airlines and Philippine Airlines, with prices starting from $595 and $683, 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 $1,001). Flying from Ontario to Incheon Intl Airport 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

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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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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$961Average$1,061FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$1,111Average$1,199FlexibilityNo cancel feeOn-time81%

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