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Route

Seoul → Cheongju

GMPSeoulSeoul Gimpo International Airport
CJJCheongjuCheongju International Airport/Cheongju Air Base (K-59/G-513)
Distance
70 mi
Estimated flight time
~40m

Same local time in Seoul and Cheongju.

Observed nonstop

View the reverse route

How often does this route fly?

Frequency

Daily at most

On average around 1 flights a day, observed from October 2025 to September 2026.

1
flights per day
2
busiest month · May
1
quietest month · Jun
3 hr 4 min
measured flight time
3 / 12
months seen

Through the year

Per day, month by month

  1. –Jan2026
  2. –Feb
  3. –Mar
  4. –Apr
  5. 2May
  6. 1Jun
  7. –Jul
  8. –Aug
  9. 1Sep
  10. –Oct2025
  11. –Nov
  12. –Dec

Airlines

Who flies it

Jeju Airnow and then
Korean Airnow and then

Through the day

Departure times

Local time in Seoul. Most departures between 06:00 and 09:00.

  1. 00:00
  2. 01:00
  3. 02:00
  4. 03:00
  5. 04:00
  6. 05:00
  7. 06:00
  8. 07:00
  9. 08:00
  10. 09:00
  11. 10:00
  12. 11:00
  13. 12:00
  14. 13:00
  15. 14:00
  16. 15:00
  17. 16:00
  18. 17:00
  19. 18:00
  20. 19:00
  21. 20:00
  22. 21:00
  23. 22:00
  24. 23:00

Through the week

By weekday

  1. 0.1Mon
  2. 0.1Tue
  3. 0.2Wed
  4. 0.1Thu
  5. 0.2Fri
  6. 0.2Sat
  7. 0Sun

Fleet

Aircraft observed

  1. Boeing 737-800B73868%
  2. Boeing 737-900B73938%
  3. Airbus A321A3218%
All the numbers in a table
MonthPer daySeenAirlines
January 2026Not seen in this month.
February 2026Not seen in this month.
March 2026Not seen in this month.
April 2026Not seen in this month.
May 202622
  • Jeju Air1×
  • Korean Air1×
June 2026110
  • Jeju Air6×
  • Korean Air4×
July 2026Not seen in this month.
August 2026Not seen in this month.
September 2026125
  • Jeju Air15×
  • Korean Air8×
October 2025Not seen in this month.
November 2025Not seen in this month.
December 2025Not seen in this month.

Airlines observed on this route

From observed callsign routes on GMP-CJJ - not a booking guarantee.

Jeju Air

7C · JJA

Hub: ICN Seoul

30 departure airportsView airline →

Jin Air

LJ · JNA

Hub: ICN Seoul

20 departure airportsView airline →

Korean Air

KE · KAL

Hub: ICN Seoul

64 departure airportsView airline →

About this route

  • Domestic route: both airports are in the same country.
  • The opposite direction has also been observed as a direct connection.
  • Direct destinations observed from Seoul: 14.
  • Direct destinations observed from Cheongju: 11.

The airports on this route

Seoul Gimpo International Airport

Seoul, South KoreaGMP / RKSS

Regional airport · 14 direct destinations · 2 runways · longest runway 11,811 ft

57 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center

Airport pageAll direct destinations

Cheongju International Airport/Cheongju Air Base (K-59/G-513)

Cheongju, South KoreaCJJ / RKTU

Major airport · 11 direct destinations · 2 runways · longest runway 8,999 ft

54 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center

Airport pageAll direct destinations

Alternative airports for this journey

Same journey, a different airport nearby - with an observed direct connection.

GMP ICNIncheon International AirportSeoul is about 78 mi from Cheongju.View route →GMP TAEDaegu International AirportDaegu is about 86 mi from Cheongju.View route →

About the route from Seoul to Cheongju

The observed direct connection between Seoul Gimpo International Airport (GMP) and Cheongju International Airport/Cheongju Air Base (K-59/G-513) (CJJ) covers approximately 70 mi. The estimated flight time is around 40m. Jeju Air, Jin Air and Korean Air have been observed on this connection in the available route data.

Frequently asked questions about this route

How far is Seoul from Cheongju by air?
The great-circle distance between Seoul Gimpo International Airport and Cheongju International Airport/Cheongju Air Base (K-59/G-513) is approximately 70 mi.
How long is the flight from Seoul to Cheongju?
Based on the distance, the estimated flight time is about 40m. This is an estimate, not a schedule.
Is there a direct connection from Seoul to Cheongju?
Yes, a direct connection between GMP and CJJ has been observed in our route data.
Which airlines have been observed on this route?
In the available route data: Jeju Air, Jin Air and Korean Air.
How often is there a flight from Seoul to Cheongju?
On average around 1 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 37 observed flights. Mainly Jeju Air, Korean Air. That is an observation, not a timetable.
What is the current time difference between Seoul and Cheongju?
Same local time in Seoul and Cheongju.

Where this data comes from

The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.

The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.

Route data updated on October 11, 2026.