The cheapest times to fly from CJJ to CJU are

  • January 29th to March 18th (except the week of February 26th)
  • July 30th to October 21st
  • November 12th to January 14th (except the week of December 24th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from CJJ to CJU is mid to late September. Prices can be as high as $250 for Friday flights during early to mid July, or as low as $38 for Tuesday flights around mid to late September.


When to Fly to Jeju-si

Flying from Cheongju (CJJ) to Jeju (CJU) will usually cost between $78 to $250 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid to late September with an average ticket price of $79. Due to high demand the most expensive time to fly is early to mid July, with an average price of $250. Planning your trip to low-cost times can easily save you $171 on economy flights and even more on first-class flights. Generally, any price below $159 can be considered a good price for a round-trip CJJ to CJU flight.

See below for a graph of average weekly prices for the CJJ to CJU route. All prices are for round-trip tickets in USD.

CJJ to CJU Flight Prices

Compared to other flights, the CJJ to CJU flight is much cheaper than the average and costs much less than the average flight leaving from Cheongju-si. The average price per mile (for a direct flight) is $0.43, which is a bit above average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $21 (11%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $165. Return trip prices are from the CJU to CJJ flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from CJJ to CJU can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 1 hour 24 minutes may be realistic.


Flight Questions Answered

Still have questions about flying from CJJ to CJU? We’ve got answers.

Which airlines fly this route?

You can find 9 major airlines flying this route most often: Air China, Asiana, China Eastern, China Southern, EASTAR JET, Hainan, Jeju Air, Jin Air, Korean Air, and potentially more during busy seasons.

How far away is it from Jeju International Airport to Cheongju International Airport?

The distance between the two airports is roughly 229 miles or 369 kilometers.

How long does it take to fly from CJJ to CJU?

The real-world flight time for a nonstop CJJ to CJU flight is about 1 hour 24 minutes.

How many flights go between Cheongju and Jeju?

It depends on the day of the week and the date, but a typical day might have around 51 available flights from CJJ to CJU.


Airport Location Info


Departing Airport

Origination codeCJJ
Origination airport nameCheongju International Airport
CountrySouth Korea

Return Airport

Destination codeCJU
Destination airport nameJeju International Airport
CountrySouth Korea


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.