$889+ Cheap flights from Ontario (ONT) to Jeju-do
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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CJU
Nov 15 — Nov 221
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Ontario to Jeju-do 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.Find flight deals from Ontario to Jeju-do
One-way flights from Ontario to Jeju-doSearch for one-way flight options from Ontario to Jeju-do. Find affordable one-way fares based on user searches. Data last updated October 16, 2025.
Search for one-way flight options from Ontario to Jeju-do. Find affordable one-way fares based on user searches. Data last updated October 16, 2025.
This Korean Air deal was found by Cheapflights users on 10/15. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/266:45 amONT - CJU
2 stops22h 00mKorean Air
Deal found 10/15![Korean Air logo]()
$889
Cheap flight deals from Ontario to Jeju-do
Keep the following information in mind while searching for Ontario to Jeju-do flight deals. Data was last updated October 16, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Popular in | December |
Cheapest in | March |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Jeju-do 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 October 16, 2025.
Use the filters below to find and compare flights from Ontario to Jeju-do that are best for you.
Fly from
Ontario
Fly to
Jeju-do
Route
Depart
Return
Price
OntarioJeju City
ONT - CJU
ONTCJU
Ontario
Thu 11/27
6:45 am-9:45 pm
2 stops22h 00m
$889
OntarioJeju City
ONT - CJU
ONTCJU
Ontario
Wed 11/26
6:45 am-9:45 pm
2 stops22h 00m
$889
Best time to book a flight from Ontario to Jeju-do
Have a flexible travel schedule? Discover the best time to fly to Jeju-do 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 Jeju-do
No data available for this route at this time. Please check back soon.