HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Incheon Intl

$398+ 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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ICN
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Incheon Intl with Cheapflights

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”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 February 3, 2026.

This SmartFares deal was found by Cheapflights users on 2/1. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:10 am
ONT
-
ICN
1 stop19h 20m
China Airlines
Tue 5/1912:45 pm
ICN
-
ONT
1 stop21h 15m
China Airlines
Deal found 2/1$812
This oojo deal was found by Cheapflights users on 2/2. 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.
Mon 5/1112:10 am
ONT
-
ICN
1 stop19h 20m
China Airlines
Wed 5/2712:45 pm
ICN
-
ONT
1 stop21h 15m
China Airlines
Deal found 2/2$817
This SmartFares deal was found by Cheapflights users on 1/31. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/412:10 am
ONT
-
ICN
1 stop19h 20m
China Airlines
Tue 5/1212:45 pm
ICN
-
ONT
1 stop21h 15m
China Airlines
Deal found 1/31$820
This FlightHub deal was found by Cheapflights users on 2/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2012:10 am
ONT
-
ICN
1 stop26h 55m
China Airlines
Mon 6/18:05 pm
ICN
-
ONT
1 stop37h 55m
China Airlines
Deal found 2/1$821
This China Airlines deal was found by Cheapflights users on 2/2. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/812:10 am
ONT
-
ICN
1 stop19h 20m
China Airlines
Thu 5/148:05 pm
ICN
-
ONT
1 stop37h 55m
China Airlines
Deal found 2/2$853
This oojo deal was found by Cheapflights users on 2/3. 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.
Mon 3/210:50 pm
ONT
-
ICN
1 stop19h 30m
China Airlines
Thu 3/128:15 pm
ICN
-
ONT
1 stop37h 35m
China Airlines
Deal found 2/3$856
This oojo deal was found by Cheapflights users on 2/2. 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.
Wed 3/410:50 pm
ONT
-
ICN
1 stop19h 30m
China Airlines
Wed 3/1112:30 pm
ICN
-
ONT
1 stop21h 20m
China Airlines
Deal found 2/2$857
This oojo deal was found by Cheapflights users on 2/3. 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.
Sat 4/1112:10 am
ONT
-
ICN
1 stop19h 20m
China Airlines
Wed 4/2212:45 pm
ICN
-
ONT
1 stop21h 15m
China Airlines
Deal found 2/3$858
This SmartFares deal was found by Cheapflights users on 1/31. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:10 am
ONT
-
ICN
1 stop26h 55m
China Airlines
Tue 4/2112:45 pm
ICN
-
ONT
1 stop21h 15m
China Airlines
Deal found 1/31$861
This Hanatour deal was found by Cheapflights users on 2/1. 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:10 am
ONT
-
ICN
1 stop26h 55m
China Airlines
Tue 4/2812:45 pm
ICN
-
ONT
1 stop21h 15m
China Airlines
Deal found 2/1$863
This China Airlines deal was found by Cheapflights users on 2/2. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3012:10 am
ONT
-
ICN
1 stop26h 55m
China Airlines
Thu 5/1412:45 pm
ICN
-
ONT
1 stop21h 15m
China Airlines
Deal found 2/2$866
This oojo deal was found by Cheapflights users on 2/1. 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.
Sat 8/2212:45 am
ONT
-
ICN
1 stop18h 45m
China Airlines
Wed 8/2612:45 pm
ICN
-
ONT
1 stop21h 55m
China Airlines
Deal found 2/1$870

Find 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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$812
(SmartFares)

One-way from

$398
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$1,222
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. 8% potential increase in price ($119 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 3, 2026.
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

Fri 5/1

12:10 am-11:30 am

1 stop19h 20m

Incheon Intl

Sat 5/9

12:45 pm-6:00 pm

1 stop21h 15m

$866

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 5/4

12:10 am-7:05 pm

1 stop26h 55m

Incheon Intl

Wed 5/13

12:45 pm-6:00 pm

1 stop21h 15m

$866

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Tue 5/5

12:10 am-7:05 pm

1 stop26h 55m

Incheon Intl

Tue 5/12

12:45 pm-6:00 pm

1 stop21h 15m

$866

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 3/4

10:50 pm-11:20 am

1 stop19h 30m

Incheon Intl

Thu 3/19

8:15 pm-5:50 pm

1 stop37h 35m

$945

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sat 4/4

12:10 am-7:05 pm

1 stop26h 55m

Incheon Intl

Fri 4/17

8:05 pm-6:00 pm

1 stop37h 55m

$951

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Tue 4/28

12:10 am-7:05 pm

1 stop26h 55m

Incheon Intl

Sat 5/9

12:45 pm-6:00 pm

1 stop21h 15m

$951

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sun 5/17

12:10 am-11:30 am

1 stop19h 20m

Incheon Intl

Fri 6/26

12:45 pm-6:00 pm

1 stop21h 15m

$951

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 5/18

12:10 am-7:05 pm

1 stop26h 55m

Incheon Intl

Sat 6/20

12:45 pm-6:00 pm

1 stop21h 15m

$989

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Thu 4/30

12:10 am-11:30 am

1 stop19h 20m

Incheon Intl

Mon 5/4

12:45 pm-6:00 pm

1 stop21h 15m

$989

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Tue 3/17

11:50 pm-7:15 pm

1 stop27h 25m

Incheon Intl

Wed 4/15

12:45 pm-6:00 pm

1 stop21h 15m

$995

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 22 results
1
2
3

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice 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 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 $354). Flying from Ontario to Incheon Intl Airport in June is currently the most expensive (average of $528). 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.

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 February 3, 2026.
Get a feel of what it's like to fly with China Airlines from Ontario to Incheon Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very good
803 reviews

Comfort

8.0

Entertainment

8.0

Overall

8.3

Boarding

8.3

Crew

8.5

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
China Airlines
8.3
Very good
803 reviews
China Airlines
8.3
Very good
803 reviews

Comfort

8.0

Entertainment

8.0

Overall

8.3

Boarding

8.3

Crew

8.5

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.

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. 1 airline 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.

  • How long is the flight from Ontario to Incheon Intl Airport?

    A quick flight from Ontario to Incheon Intl Airport can take about 19h 20m. China Airlines provides one of the quickest options available for as low as $866. Airlines will cover a distance of 6006 mi.

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

    According to our current data, China Airlines ($860), offers the cheapest pricing from Ontario to Incheon Intl Airport. This flight start at 30% lower than the current average price 3 months from now.

  • 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 $354). Flying from Ontario to Incheon Intl Airport in June is currently the most expensive (average of $528). 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 Incheon Intl Airport?

Book flights to Incheon Intl Airport if you plan to visit one of these locations
Suwon
Seongnam

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.

Top airline flying from Ontario to Incheon Intl

Discover the top airline 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$860Average$1,000FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights