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Incheon Intl

$394+ 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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ICN
Apr 2 — Apr 91
Thu 4/2
Thu 4/9
1 adult, Economy
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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 March 3, 2026.

This oojo deal was found by Cheapflights users on 2/26. 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.
Thu 4/3012:10 am
ONT
-
ICN
1 stop26h 55m
China Airlines
Sat 5/1612:45 pm
ICN
-
ONT
1 stop21h 15m
China Airlines
Deal found 2/26$854
This oojo deal was found by Cheapflights users on 2/27. 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.
Thu 4/3012:10 am
ONT
-
ICN
1 stop26h 55m
China Airlines
Sun 5/108:05 pm
ICN
-
ONT
1 stop37h 55m
China Airlines
Deal found 2/27$855
This Vliegwinkel deal was found by Cheapflights users on 2/27. 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 Vliegwinkel 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
Wed 4/2912:45 pm
ICN
-
ONT
1 stop21h 15m
China Airlines
Deal found 2/27$868
This SmartFares deal was found by Cheapflights users on 2/27. 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.
Fri 9/412:45 am
ONT
-
ICN
1 stop26h 20m
China Airlines
Mon 9/2112:35 pm
ICN
-
ONT
1 stop21h 25m
China Airlines
Deal found 2/27$888
This SmartFares deal was found by Cheapflights users on 2/26. 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 8/1712:45 am
ONT
-
ICN
1 stop18h 45m
China Airlines
Mon 8/3112:45 pm
ICN
-
ONT
1 stop21h 55m
China Airlines
Deal found 2/26$889
This SmartFares deal was found by Cheapflights users on 3/1. 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 9/1912:10 am
ONT
-
ICN
1 stop19h 05m
China Airlines
Wed 10/78:35 pm
ICN
-
ONT
1 stop37h 25m
China Airlines
Deal found 3/1$890
This SmartFares deal was found by Cheapflights users on 3/1. 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.
Wed 10/1412:10 am
ONT
-
ICN
1 stop27h 25m
China Airlines
Thu 11/512:30 pm
ICN
-
ONT
1 stop21h 20m
China Airlines
Deal found 3/1$891
This oojo deal was found by Cheapflights users on 2/27. 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.
Sun 3/811:50 pm
ONT
-
ICN
1 stop27h 25m
China Airlines
Fri 3/2012:30 pm
ICN
-
ONT
1 stop21h 20m
China Airlines
Deal found 2/27$899
This SmartFares deal was found by Cheapflights users on 3/1. 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.
Sun 9/1312:45 am
ONT
-
ICN
1 stop26h 50m
China Airlines
Wed 9/3012:35 pm
ICN
-
ONT
1 stop21h 25m
China Airlines
Deal found 3/1$903
This iWofly deal was found by Cheapflights users on 3/1. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1212:10 am
ONT
-
ICN
1 stop19h 20m
China Airlines
Tue 5/1212:45 pm
ICN
-
ONT
1 stop21h 15m
China Airlines
Deal found 3/1$917
This Trip.com deal was found by Cheapflights users on 3/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/912:59 am
ONT
-
ICN
2 stops27h 11m
Multiple Airlines
Tue 5/1912:45 pm
ICN
-
ONT
1 stop21h 15m
Multiple Airlines
Deal found 3/1$921
This Trip.com deal was found by Cheapflights users on 2/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1012:59 am
ONT
-
ICN
2 stops27h 11m
Multiple Airlines
Fri 5/1512:45 pm
ICN
-
ONT
1 stop21h 15m
Multiple Airlines
Deal found 2/27$926

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 March 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$854
(oojo)

One-way from

$394
(Kiwi.com)

Popular in

May

Cheapest in

September

Average price

$1,031
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. 7% potential increase in price ($107 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 3, 2026.
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 8/29

12:45 am-11:30 am

1 stop18h 45m

Incheon Intl

Tue 9/8

12:45 pm-6:40 pm

1 stop21h 55m

$945

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 3/16

11:50 pm-7:15 pm

1 stop27h 25m

Incheon Intl

Mon 4/27

8:05 pm-6:00 pm

1 stop37h 55m

$1,077

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sat 3/28

12:10 am-11:30 am

1 stop19h 20m

Incheon Intl

Thu 4/16

12:45 pm-6:00 pm

1 stop21h 15m

$1,090

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Thu 4/30

6:00 am-5:30 pm

1 stop19h 30m

Incheon Intl

Sun 5/3

7:35 pm-11:59 pm

1 stop20h 24m

$1,105

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Fri 4/10

6:00 am-4:40 pm

1 stop18h 40m

Incheon Intl

Mon 4/13

4:40 pm-5:15 pm

1 stop16h 35m

$1,298

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Wed 3/18

6:00 am-3:55 pm

1 stop17h 55m

Incheon Intl

Tue 4/7

7:00 pm-5:13 pm

1 stop14h 13m

$1,326

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Fri 3/20

10:33 am-6:35 pm

1 stop16h 02m

Incheon Intl

Fri 3/27

8:35 pm-11:59 pm

1 stop19h 24m

$1,364

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Mon 5/11

6:59 pm-11:00 am

2 stops24h 01m

Incheon Intl

Mon 6/29

12:00 pm-1:13 pm

2 stops41h 13m

$1,369

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Fri 4/17

7:08 pm-11:00 am

2 stops23h 52m

Incheon Intl

Sat 5/2

12:00 pm-9:45 am

2 stops37h 45m

$1,388

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Tue 3/17

12:02 pm-6:35 pm

1 stop38h 33m

Incheon Intl

Sun 4/5

8:35 pm-5:09 pm

2 stops36h 34m

$1,460

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 23 resultsSorted by cheapest first
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 March.
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 $340). Flying from Ontario to Incheon Intl Airport in June is currently the most expensive (average of $513). 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 March 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
809 reviews

Crew

8.5

Boarding

8.3

Entertainment

8.0

Overall

8.3

Food

7.8

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

A,Feb 2026

SEA - TPE

China Airlines has improved significantly over the years. This is the first time we fly on their business class after 20+ years. Both hardware and services impressed us. Will definitely fly with again in the future.
China Airlines
8.3
Very good
809 reviews
China Airlines
8.3
Very good
809 reviews

Crew

8.5

Boarding

8.3

Entertainment

8.0

Overall

8.3

Food

7.8

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

A,Feb 2026

SEA - TPE

China Airlines has improved significantly over the years. This is the first time we fly on their business class after 20+ years. Both hardware and services impressed us. Will definitely fly with again in the future.

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 17h 55m. China Airlines provides one of the quickest options available for as low as $1,194. Airlines will cover a distance of 6006 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 32% 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 $340). Flying from Ontario to Incheon Intl Airport in June is currently the most expensive (average of $513). 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

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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 March 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$860Average$989FlexibilityNo cancel feeOn-time70%

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