Cheap Flights from Cheongju to Jeju City from $18

Frequently Asked Questions

• What are the cheapest flights from Cheongju to Jeju City (CJJ-CJU)?

  Based on Trip.com data, Aero K Airlines offers one-way fares as low as $18 on Cheapest nonstop routes (e.g. CJJ to CJU on Wed, Sep 16), while Trinity Airways offers Cheapest nonstop round-trips from $36 departing on Sat, Sep 19 and returning on Mon, Sep 21.

• Which airlines offer direct flights from Cheongju to Jeju City?

  At the moment, you can catch a nonstop flight from Cheongju to Jeju City with the following airlines, including: Trinity Airways Jin Air Jeju Air Eastar Jet Aero K Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long does it take to fly from Cheongju (CJJ) to Jeju City (CJU) and what is the distance?

  It takes around 1 hour 11 minutes to fly from Cheongju (CJJ) to Jeju City (CJU).

• When is the best time to book flights from Cheongju to Jeju City?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Cheongju to Jeju City is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Cheongju to Jeju City?

  Based on Trip.com data in the past 4 weeks, there is 75 flight per week flying from Cheongju to Jeju City. You can check the weekly schedule for popular airlines on this route below: Jin Air: S/M/T/W/T/F/S -- LJ405 (14:41) Trinity Airways: S/M/T/W/T/F/S -- TW849 (20:14) Aero K Airlines: S/M/T/W/T/F/S -- RF613 (18:41)

• How can I find the best deals on flights from Cheongju to Jeju City?

  To find best deals on flights from Cheongju to Jeju City, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Sep 16, with one-way flights priced at just $18.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Aero K Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Jeju City travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Cheongju (CJJ) to Jeju City (CJU) the cheapest?

  The cheapest months to fly from Cheongju to Jeju City is September, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Cheongju to Jeju City on?

  After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Cheongju to Jeju City on September 28, 2026 with Eastar Jet, with prices starting at $33.

• Which airports can I fly into Jeju City from Cheongju?

  You can arrive at any of the following airports in Jeju City: Jeju International Airport (CJU). Flights from Cheongju International Airport to Jeju International Airport (CJJ-CJU) are by far the most popular option for this route.

• Is there any time difference between Cheongju and Jeju City?

  The time difference between Jeju City and Cheongju is 0m.

• How do I change or cancel my ticket from Cheongju to Jeju City?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from Cheongju to Jeju City?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Cheongju to Jeju City is $58. Fares vary by travel date, airline and availability.

• What is the average cost of a round-trip flight from Cheongju to Jeju City?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Cheongju to Jeju City is $109. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from Cheongju to Jeju City on Trip.com?

  Enter Cheongju and Jeju City, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

• Are there budget airlines on the Cheongju to Jeju City route?

  Trinity Airways, Aero K Airlines and Jeju Airare the most popular budget airlines flying from Cheongju to Jeju City. Check baggage, seat and payment fees before comparing the final price.