When did momondo last update prices for flights from Ontario Airport to Jeju City Airport?

Prices for flights from Ontario Airport to Jeju City Airport were last updated today.

How old do you have to be to fly from Ontario Airport to Jeju City Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Jeju City Airport.

What documentation or ID do you need to fly to Jeju City Airport?

The travel and health documents required for your trip to Jeju City Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Jeju City Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$1,401 Cheap Flights from Ontario to Jeju City in 2025/26

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Find the cheapest flights from Ontario to Jeju City

Round-trip

One-way

Cheap round-trip flights

12:10 am - 5:30 pmONT-CJU

25h 20m1 stop

10:20 pm - 6:00 pmCJU-ONT

35h 40m2 stops

$1,401Multiple Airlines

Find Deal

Sun, Oct 5 - Sun, Oct 12

6:45 am - 8:00 pmONT-CJU

20h 15m2 stops

10:35 am - 5:09 pmCJU-ONT

23h 34m2 stops

$1,457Korean Air

Find Deal

Thu, Nov 13 - Fri, Nov 21

12:10 am - 5:30 pmONT-CJU

25h 20m1 stop

10:40 am - 6:00 pmCJU-ONT

23h 20m1 stop

$1,487Multiple Airlines

Find Deal

Sun, Oct 5 - Sun, Oct 12

Fly from

Fly to

Route

Depart

Return

Price

OntarioJeju City

ONT - CJU

ONTCJU

Ontario

Sun 10/5

12:10 am-5:30 pm

1 stop25h 20m

Jeju City

Sun 10/12

10:20 pm-6:00 pm

2 stops35h 40m

$1,401

OntarioJeju City

ONT - CJU

ONTCJU

Ontario

Thu 11/13

6:45 am-8:00 pm

2 stops20h 15m

Jeju City

Fri 11/21

10:35 am-5:09 pm

2 stops23h 34m

$1,457

OntarioJeju City

ONT - CJU

ONTCJU

Ontario

Sun 10/5

12:10 am-5:30 pm

1 stop25h 20m

Jeju City

Sun 10/12

10:40 am-6:00 pm

1 stop23h 20m

$1,487

OntarioJeju City

ONT - CJU

ONTCJU

Ontario

Mon 10/20

12:10 am-6:10 pm

2 stops26h 00m

$3,819

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Ontario to Jeju City

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Jeju City?

The cheapest day to depart from Ontario to Jeju City is on a Thursday. Travelers who choose to depart for Jeju City on a Thursday will often find tickets for as low as $1,558. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Ontario to Jeju City for around $1,852.

What is the cheapest time of day to depart on your flight to Jeju City?

In the evening is the cheapest time of day to fly from Ontario to Jeju City when you can find flight prices for as low as $1,437. Flying to Jeju City in the evening is an ideal time because this is during off-peak travel hours. Flights at noon are often more expensive with an average ticket price of $1,624.

When to book flights from Ontario to Jeju City

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Jeju City according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Jeju City (ONT to CJU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Jeju City

Direct flights	None

There are no direct flights from Ontario to Jeju City. There are no popular flight routes from Ontario to Jeju City.

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How far is Ontario to Jeju City by plane?
Jeju City is 6181.2 mi away from Ontario. In terms of flight time, this usually takes a little over 20h 15m.
When did momondo last update prices for flights from Ontario Airport to Jeju City Airport?
Prices for flights from Ontario Airport to Jeju City Airport were last updated today.
How old do you have to be to fly from Ontario Airport to Jeju City Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Jeju City Airport.
What documentation or ID do you need to fly to Jeju City Airport?
The travel and health documents required for your trip to Jeju City Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Jeju City Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Jeju City?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Jeju City. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Jeju City with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Jeju City from Ontario with this policy.

How can momondo help me find flights from Ontario to Jeju City?

Once all potential Ontario to Jeju City flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Jeju City right now. Can momondo alert me if prices change?

Price alerts on flights to Jeju City from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.