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Cheongju International Airport (CJJ) had nonstop service to 20 destinations on 12 airlines in our June 15, 2026 departure snapshot. The busiest route was to Jeju City (CJU), served by 7 carriers, and the largest operator here was Aero K with nonstops to 13 destinations. 19 of those routes were international.
Route data as of June 15, 2026, based on a 7-day departures sample. Routes may have changed since this snapshot.
You can fly nonstop from CJJ to 20 destinations, including 19 international routes. Current schedules show about 44 flights per day across those routes. The busiest options start with Jeju City (CJU), Fukuoka (FUK), Osaka (KIX).
19 international routes in this schedule set
Japan 10 · China 5 · Indonesia 1
23-24/day on 7 airlines
Airbus A320 family · Boeing 737 · Airbus A220
These routes have enough tracked flights or schedule depth for a full guide with duration, distance, airlines, aircraft, and frequency.
Ranked by destinations served, then daily frequency.
Ranked by airlines operating the route. Routes with enough tracked data or schedule depth link to full route guides.
Cheongju International Airport (CJJ / RKTU) is located in Cheongju, South Korea.
The IATA code is CJJ. The ICAO code is RKTU.
The busiest scheduled route from CJJ in our June 15, 2026 departure data was CJJ to CJU (Jeju City), with 23-24/day across 7 airlines.
Aero K was the largest operator in our CJJ schedule data, serving 13 destinations with 15-16/day.
CJJ has 19 international routes and 1 domestic route in the current schedule set.
12 airlines operated at CJJ in our June 15, 2026 snapshot. Top carriers include Aero K, T'Way Air, EASTAR JET, Jin Air, Jeju Air.
CJJ has direct flights to 20 destinations including Jeju City, Fukuoka, Osaka, Tokyo, Taipei.
View live arrivals and departures at CJJ on FlightRadar24.
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