CJJ · Cheongju, South Korea
Cheongju International Airport/Cheongju Air Base (K-59/G-513).
--:--:-- · KST (UTC+09:00) · 36.7156° N, 127.5003° E
Verification trail
Source-backed facts for CJJ
This section separates stable airport identifiers from live operating data. Codes, coordinates, timezone, elevation, source identifiers, and accepted reference links are retained here; live arrivals, departures, gates, delays, NOTAMs, and airline schedule changes must still be checked with the airport or carrier.
Airport catalog
OurAirports ID 5663; ident RKTU; scheduled service listed.
Cached airports.csv snapshot: 2026-04-25; runways.csv snapshot: 2026-05-21.
Official airport source
cheongju.airport.co.kr
Used as the preferred live-reference handoff for terminals, gates, alerts, and airport notices.
Open sourceReference summary
No accepted airport summary
Airport-shaped reference summary from en.wikipedia.org; summary snapshot 2026-05-20.
Open sourceManual / derived signals
17 source-backed signals
Merged from OurAirports cached airports.csv, OurAirports cached runways.csv, Wikidata airport entity snapshot, airport-shaped Wikipedia summary snapshot; facts generated 2026-05-21.
IATA / ICAO
CJJ / RKTU
OurAirports ident
RKTU
GPS / local code
RKTU
ISO region
KR-43
Scheduled service
Listed in source snapshot
Role
joint-use or military-linked airport
Official host
cheongju.airport.co.kr
Reference host
en.wikipedia.org
Wikidata entity
Q483675
Snapshot generated
2026-05-21
Airport lookup keys
Stable codes
Regional keys
Nearby airport codes
Route reference codes
Accepted citation URLs
Last updated May 21, 2026. Stable airport identifiers and timezone facts are content-reviewed; clocks render live in the browser, while weather and time-difference notes are page-snapshot aids rather than permanent airport records.
Live values rendered at Nov 5, 9:23 PM UTC.
What you need to know now
Local airport time
--:--:--KST · UTC+09:00
Time zone
KST
Asia/Seoul · UTC+09:00
Airfield conditions
Live airport weather is temporarily unavailable.
Surface access
8.8 km
Approximate distance to central Cheongju.
Airport Snapshot
Country capital
Seoul
Languages
Korean
Currency
KRW (₩)
Country area
100,210 km²
Passenger volume
Source note unavailable
Terminals
Not clearly stated
Runways
2 runways
Longest runway
9,000 ft / 2,743 m
Runway surface
concrete (2)
Opened / operator
1978 · Korea Airports Corporation
Owner / entity
Q483675
Hub airlines
Mixed or not clearly stated
Airport role
joint-use or military-linked airport
Scheduled service
Listed
Fact coverage
17 source-backed signals
Cheongju International Airport/Cheongju Air Base (K-59/G-513) is a joint-use or military-linked airport for Cheongju, South Korea. Cheongju's built-up core sits roughly 8.8 km from the terminal area. Operations run on Asia/Seoul (UTC+09:00, KST). Live weather is temporarily unavailable. With 5 other indexable airports in its surrounding network, it works well as a reference point for regional flight planning and timezone checks.
Cheongju International Airport/Cheongju Air Base (K-59/G-513) (CJJ / RKTU) is at 36.7156° N, 127.5003° E, elevation 191 ft (58 m), serving Cheongju, South Korea.
Cheongju is in South Korea (capital Seoul); regulated by Korea Office of Civil Aviation (MOLIT); on Asia/Seoul (KST, UTC+09:00); working languages: Korean; currency: KRW (₩).
Distance from central Cheongju: 9 km.
Airport context brief
A compact traveler-facing brief from the airport catalog, country snapshot, route geometry, city anchors, peer airports, and source trail for CJJ.
Name and identity cues
Primary airport name
Cheongju International Airport/Cheongju Air Base (K-59/G-513) (CJJ / RKTU)
Cheongju International Airport/Cheongju Air Base (K-59/G-513)
Source identifiers
RKTU · RKTU · KR-43
cheongju.airport.co.kr · en.wikipedia.org · scheduled service yes
Closest mapped city anchors
1. Cheongju-si
cheongju-si · 8.8 km from CJJ
South Korea · Asia/Seoul · +0h · population 852,147 · city coordinates 36.6372, 127.4897
2. Jungpyong
jungpyong · 11 km from CJJ
South Korea · Asia/Seoul · +0h · population 37,207 · city coordinates 36.7847, 127.5819
3. Chinch'ŏn
chinch-on · 16 km from CJJ
South Korea · Asia/Seoul · +0h · population 60,964 · city coordinates 36.8567, 127.4433
4. Sejong
sejong · 23 km from CJJ
South Korea · Asia/Seoul · +0h · population 394,630 · city coordinates 36.5924, 127.2922
5. Koesan
koesan · 28 km from CJJ
South Korea · Asia/Seoul · +0h · population 44,461 · city coordinates 36.8108, 127.7947
6. Cheonan
cheonan · 33 km from CJJ
South Korea · Asia/Seoul · +0h · population 658,831 · city coordinates 36.8065, 127.1522
Airport alternatives in the retained graph
1. GMP RKSS
Gimpo International Airport · Seoul
113 km from CJJ · Asia/Seoul · +0h · elevation 59 ft (18 m) · airport coordinates 37.5583, 126.7910
2. ICN RKSI
Incheon International Airport · Seoul
125 km from CJJ · Asia/Seoul · +0h · elevation 23 ft (7 m) · airport coordinates 37.4691, 126.4510
3. TAE RKTN
Daegu International Airport · Daegu
138 km from CJJ · Asia/Seoul · +0h · elevation 116 ft (35 m) · airport coordinates 35.8944, 128.6570
4. YNY RKNY
Yangyang International Airport · Gonghang-ro
182 km from CJJ · Asia/Seoul · +0h · elevation 241 ft (73 m) · airport coordinates 38.0605, 128.6698
5. PUS RKPK
Gimhae International Airport · Busan
214 km from CJJ · Asia/Seoul · +0h · elevation 6 ft (2 m) · airport coordinates 35.1795, 128.9380
Route-time reference set
1. CJJ-GMP
Seoul · 113 km · 59m
Asia/Seoul · +0h from CJJ; reference route only, not a live schedule.
2. CJJ-ICN
Seoul · 125 km · 1h 0m
Asia/Seoul · +0h from CJJ; reference route only, not a live schedule.
3. CJJ-TAE
Daegu · 138 km · 1h 0m
Asia/Seoul · +0h from CJJ; reference route only, not a live schedule.
4. CJJ-YNY
Gonghang-ro · 182 km · 1h 4m
Asia/Seoul · +0h from CJJ; reference route only, not a live schedule.
5. CJJ-PUS
Busan · 214 km · 1h 6m
Asia/Seoul · +0h from CJJ; reference route only, not a live schedule.
Runway source evidence
Published runway count
2 runways
Longest runway 9,000 ft / 2,743 m. 2 lighted runways in the runway snapshot.
Runway surface mix
concrete (2)
Surface labels are normalized from the OurAirports runway rows for CJJ.
Runway identifiers
06L/24R · 06R/24L
Identifier pairs are retained as airport-specific runway cues, not live operational availability claims.
Same-country airport context
1. GMP RKSS
Gimpo International Airport · Seoul · 113 km from CJJ
large airport · Asia/Seoul · south-korea · 59 ft (18 m) · 37.5583, 126.7910
2. ICN RKSI
Incheon International Airport · Seoul · 125 km from CJJ
large airport · Asia/Seoul · south-korea · 23 ft (7 m) · 37.4691, 126.4510
3. TAE RKTN
Daegu International Airport · Daegu · 138 km from CJJ
large airport · Asia/Seoul · south-korea · 116 ft (35 m) · 35.8944, 128.6570
4. YNY RKNY
Yangyang International Airport · Gonghang-ro · 182 km from CJJ
large airport · Asia/Seoul · south-korea · 241 ft (73 m) · 38.0605, 128.6698
5. PUS RKPK
Gimhae International Airport · Busan · 214 km from CJJ
large airport · Asia/Seoul · south-korea · 6 ft (2 m) · 35.1795, 128.9380
6. MWX RKJB
Muan International Airport · Muan (Piseo-ri) · 217 km from CJJ
large airport · Asia/Seoul · south-korea · 35 ft (11 m) · 34.9914, 126.3828
Country and authority
CJJ sits in South Korea (Republic of Korea), whose capital is Seoul. Korea Office of Civil Aviation (MOLIT) is the national civil-aviation authority we name for regulator context. Country context: Asia, Eastern Asia.
Traveler context
Common country-language signals: Korean. Currency context: KRW (₩). CJJ is listed with scheduled service in the airport source snapshot.
Entity fingerprint
Wikidata airport entity: Q483675 · Cheongju International Airport. Administrative area: Cheongwon-gu · Cheongju. Named after: Cheongju. Entity official-site cross-check: airport.co.kr
Field and clock profile
Cheongju International Airport/Cheongju Air Base (K-59/G-513) is a near sea-level field at 191 ft (58 m), positioned at 36.7156° N, 127.5003° E in the Northern mid-latitudes. The runway snapshot lists 2 runways and a longest runway of 9,000 ft / 2,743 m. The airport clock uses Asia/Seoul (KST, UTC+09:00), so cross-date arrivals should be checked against this zone rather than the airline origin city.
City and airport alternatives
Cheongju-si is the closest retained city-time anchor at 8.8 km. GMP Seoul is the closest retained airport alternative at 113 km.
Country airport peers
CJJ is compared with GMP Seoul at 113 km, ICN Seoul at 125 km, TAE Daegu at 138 km, YNY Gonghang-ro at 182 km, PUS Busan at 214 km inside the retained South Korea airport set, which is useful when backup airports share the same country context but differ by city, route network, and clock behavior.
Route geometry
CJJ-GMP Seoul: 113 km, about 59m, +0h. CJJ-ICN Seoul: 125 km, about 1h 0m, +0h. CJJ-TAE Daegu: 138 km, about 1h 0m, +0h. CJJ-YNY Gonghang-ro: 182 km, about 1h 4m, +0h. These are distance and timezone references, not live flight availability claims.
Source trail
OurAirports ident RKTU backs the stable code, coordinate, elevation, and timezone record. cheongju.airport.co.kr is attached as the official airport website. en.wikipedia.org is used only as supporting reference context. Snapshot date: 2026-05-21.
Operational Profile
Traffic profile
Reference airport
Airline role
Mixed commercial service
Terminal footprint
See operational notes
Runway footprint
2 runways · longest 9,000 ft / 2,743 m
Runway identifiers
06L/24R, 06R/24L
CJJ carries military or air-base wording in the source names/keywords, so the page treats it as more than a simple passenger terminal reference.
CJJ (RKTU) is a near sea-level field at 191 ft (58 m) in the mid-latitudes, kept in the curated set for its route, timezone, and market-planning value.
CJJ sits in a broader regional network with 5 nearby curated alternatives, so airline choice and connection strategy are part of the planning story here.
CJJ's runway record lists 2 runways, with the longest runway at 9,000 ft / 2,743 m and source surfaces recorded as concrete (2).
Korea Airports Corporation is the clearest operator or management signal we currently have on file for CJJ.
These operational notes prefer the structured airport facts snapshot, then fall back to the accepted airport reference at cheongju.airport.co.kr, then blend that with local timezone, route, and city-access data already on this page.
Decision matrix for CJJ
These are the specific situations where this airport page earns its keep: time-zone conversion, city transfer planning, nearby airport backup logic, and source-confidence checks before acting.
When the clock matters
CJJ uses Asia/Seoul (KST, UTC+09:00). Use this before overnight arrivals, cross-date departures, and same-day connections.
When surface access matters
Cheongju International Airport/Cheongju Air Base (K-59/G-513) is about 8.8 km from central Cheongju; build that transfer into arrival and check-in planning.
When alternates matter
GMP Seoul is the closest retained alternate at 113 km, time difference +0h.
When source checks matter
cheongju.airport.co.kr is listed as the official airport website in the airport facts snapshot; live schedules, gates, routes, terminals, and NOTAM-sensitive operations still need official airport or airline verification.
How this airport compares nearby
These comparisons place CJJ inside the retained airport graph by country, timezone, elevation, and coordinate neighbors. They are deterministic dataset facts, not generated flight claims.
Country-rank position
CJJ ranks #1 in the curated South Korea airport set when large airports are listed before medium airports, then sorted by IATA code. The retained country set has 8 airports.
Same-zone airport cohort
CJJ shares Asia/Seoul with CJU Jeju City KR · GMP Seoul KR · ICN Seoul KR · MWX Muan (Piseo-ri) KR · PUS Busan KR · TAE Daegu KR. This helps separate same-clock airports by city, country, code, and geography.
Elevation-neighbor cohort
CJJ is 191 ft (58 m). Closest elevation peers in the retained airport set include BRI 193 ft (59 m) (2 ft delta) · SHE 198 ft (60 m) (7 ft delta) · DAR 182 ft (55 m) (9 ft delta) · MBA 200 ft (61 m) (9 ft delta) · LGW 202 ft (62 m) (11 ft delta).
Coordinate-neighbor check
CJJ's nearest retained coordinate neighbors are GMP 113 km +0h · ICN 125 km +0h · TAE 138 km +0h · YNY 182 km +0h.
Flight Path Arc
Great-circle route between airports with animated plane. Pick a route.
Arriving From / Departing To
| Destination | Route code | Distance | Estimated window | Time difference | Destination clock |
|---|---|---|---|---|---|
| Seoul | GMP | 113 km | 59m | +0h | --:--:-- |
| Seoul | ICN | 125 km | 1h 0m | +0h | --:--:-- |
| Daegu | TAE | 138 km | 1h 0m | +0h | --:--:-- |
| Gonghang-ro | YNY | 182 km | 1h 4m | +0h | --:--:-- |
| Busan | PUS | 214 km | 1h 6m | +0h | --:--:-- |
CJJ to GMP
Seoul
Distance 113 km; estimated travel window 59m; destination zone Asia/Seoul is +0h from CJJ. Use the live destination clock on this page as a cross-timezone planning cue, not as a live flight schedule.
CJJ to ICN
Seoul
Distance 125 km; estimated travel window 1h 0m; destination zone Asia/Seoul is +0h from CJJ. Use the live destination clock on this page as a cross-timezone planning cue, not as a live flight schedule.
CJJ to TAE
Daegu
Distance 138 km; estimated travel window 1h 0m; destination zone Asia/Seoul is +0h from CJJ. Use the live destination clock on this page as a cross-timezone planning cue, not as a live flight schedule.
Airport Details
Timezone
Ground Transport and Nearby Context
Central Cheongju is close enough that taxi, ride-hail, and rail or shuttle links are usually the fastest arrival options.
Cheongju-si is the nearest mapped city anchor in the current dataset, which makes it the cleanest companion page when travelers want to switch from airport timing into local city timing.
Cheongju International Airport/Cheongju Air Base (K-59/G-513) has 5 nearby indexed airport alternatives, which makes backup departures and diversion logic part of real planning instead of a theoretical edge case.
Nearby city time anchors
Airport pages are most useful when they bridge into real city clocks. These city anchors are ranked by distance from CJJ, then shown with their own timezone, local time, and time difference from the airport clock.
Cheongju-si
cheongju-si · 8.8 km · Asia/Seoul
- Local time
- --:--:--
- Diff
- +0h
Jungpyong
jungpyong · 11 km · Asia/Seoul
- Local time
- --:--:--
- Diff
- +0h
Chinch'ŏn
chinch-on · 16 km · Asia/Seoul
- Local time
- --:--:--
- Diff
- +0h
Sejong
sejong · 23 km · Asia/Seoul
- Local time
- --:--:--
- Diff
- +0h
Koesan
koesan · 28 km · Asia/Seoul
- Local time
- --:--:--
- Diff
- +0h
Cheonan
cheonan · 33 km · Asia/Seoul
- Local time
- --:--:--
- Diff
- +0h
Anseong
anseong · 39 km · Asia/Seoul
- Local time
- --:--:--
- Diff
- +0h
Seonghwan
seonghwan · 40 km · Asia/Seoul
- Local time
- --:--:--
- Diff
- +0h
Daejeon
daejeon · 42 km · Asia/Seoul
- Local time
- --:--:--
- Diff
- +0h
Gongju
gongju · 44 km · Asia/Seoul
- Local time
- --:--:--
- Diff
- +0h
Asan
asan · 45 km · Asia/Seoul
- Local time
- --:--:--
- Diff
- +0h
Okcheon
okcheon · 46 km · Asia/Seoul
- Local time
- --:--:--
- Diff
- +0h
Airlines and Network Role
Cheongju International Airport/Cheongju Air Base (K-59/G-513) does not have a long carrier list in the current source trail, so this page emphasizes the durable pieces travelers can safely use here: local time, field identifiers, nearby airports, and timezone differences.
The route timing references show the first cross-timezone planning burden after this airport: Seoul (GMP), Seoul (ICN), Daegu (TAE). Treat them as distance and clock cues, then verify flight availability with the carrier.
Planning checkpoints
- Traffic signal: not clearly stated in the source trail.
- Terminal footprint: not clearly stated in the source trail.
- Runway footprint: 2 runways; longest runway 9,000 ft / 2,743 m; identifiers 06L/24R, 06R/24L.
- Runway surfaces: concrete (2); 2 lighted runways in the source snapshot.
- Operator / management: Korea Airports Corporation.
- Opened / inaugurated: 1978.
- Network role: mixed or not clearly stated in the source trail.
Nearby Airports
Nearby airports are ranked by coordinate distance from CJJ. The time difference column is computed from IANA zones against the page snapshot, while the local clocks update in the browser.
Gimpo International AirportGMP
Seoul · large airport
- Distance
- 113 km
- Local time
- --:--:--
- Time diff
- +0h
- Elevation
- 59 ft (18 m)
Compare against GMP when route choice, backup departures, or arrival-side local time matters.
Incheon International AirportICN
Seoul · large airport
- Distance
- 125 km
- Local time
- --:--:--
- Time diff
- +0h
- Elevation
- 23 ft (7 m)
Compare against ICN when route choice, backup departures, or arrival-side local time matters.
Daegu International AirportTAE
Daegu · large airport
- Distance
- 138 km
- Local time
- --:--:--
- Time diff
- +0h
- Elevation
- 116 ft (35 m)
Compare against TAE when route choice, backup departures, or arrival-side local time matters.
Yangyang International AirportYNY
Gonghang-ro · large airport
- Distance
- 182 km
- Local time
- --:--:--
- Time diff
- +0h
- Elevation
- 241 ft (73 m)
Compare against YNY when route choice, backup departures, or arrival-side local time matters.
Gimhae International AirportPUS
Busan · large airport
- Distance
- 214 km
- Local time
- --:--:--
- Time diff
- +0h
- Elevation
- 6 ft (2 m)
Compare against PUS when route choice, backup departures, or arrival-side local time matters.
Questions
FAQ
What timezone is Cheongju International Airport/Cheongju Air Base (K-59/G-513) (CJJ) in?▾
Cheongju International Airport/Cheongju Air Base (K-59/G-513) is in the Asia/Seoul timezone (UTC+09:00, KST).
What are the codes for Cheongju International Airport/Cheongju Air Base (K-59/G-513)?▾
Cheongju International Airport/Cheongju Air Base (K-59/G-513) uses IATA code CJJ and ICAO code RKTU.
Where is Cheongju International Airport/Cheongju Air Base (K-59/G-513) located?▾
Cheongju International Airport/Cheongju Air Base (K-59/G-513) is located in Cheongju, South Korea at coordinates 36.7156° N, 127.5003° E, with an elevation of 191 ft (58 m) (near sea-level field in the mid-latitudes).
How far is Cheongju International Airport/Cheongju Air Base (K-59/G-513) from central Cheongju?▾
Cheongju International Airport/Cheongju Air Base (K-59/G-513) sits roughly 8.8 km from the nearest mapped city center for Cheongju.
Which route reference is most useful from CJJ?▾
Seoul (GMP) is one of the closest route references on this page, with an estimated travel window of 59m, destination timezone Asia/Seoul, and a +0h difference from CJJ.
Which authority regulates CJJ?▾
Cheongju International Airport/Cheongju Air Base (K-59/G-513) sits inside South Korea, where civil aviation oversight is led by the Korea Office of Civil Aviation (MOLIT).
What other airports in South Korea are close peers to CJJ?▾
CJJ's curated peers in South Korea on this site include GMP Seoul, ICN Seoul, TAE Daegu, plus 3 more.
How many runways does Cheongju International Airport/Cheongju Air Base (K-59/G-513) have?▾
Cheongju International Airport/Cheongju Air Base (K-59/G-513)'s source-backed operational summary lists 2 runways, with the longest runway recorded at 9,000 ft / 2,743 m; identifiers include 06L/24R, 06R/24L.