Cheongju to Ulaanbaatar (Sergelen) Flights CJJ → UBN

Cheongju International Airport/Cheongju Air Base (K-59/G-513) → Ulaanbaatar Chinggis Khaan International Airport

🇰🇷 Cheongju, KR → 🇲🇳 Ulaanbaatar (Sergelen), MN

The Cheongju to Ulaanbaatar (Sergelen) route connects Cheongju International Airport/Cheongju Air Base (K-59/G-513) (CJJ) in KR with Ulaanbaatar Chinggis Khaan International Airport (UBN) in MN. This medium-haul flight covers approximately 1295 miles (2084 km). This route is served by 2 airlines: Aero K, Tway Air.

Departure Airport

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

ICAO Code:: RKTU
IATA Code:: CJJ
City:: 🇰🇷 Cheongju
Country:: KR
Elevation:: 191 ft

Destination Airport

Ulaanbaatar Chinggis Khaan International Airport

ICAO Code:: ZMCK
IATA Code:: UBN
City:: 🇲🇳 Ulaanbaatar (Sergelen)
Country:: MN
Elevation:: 4482 ft

Operators

Routes Tracked

1295

Miles

Flight Duration

Route Map

Operating Airlines

Airline	ICAO	IATA
Aero K	`EOK`	`RF`
Tway Air	`TWB`	`TW`

Flight Schedule Pattern

Day	Flights Observed	Frequency
Monday	0	0%
Tuesday	1	8%
Wednesday	4	33%
Thursday	0	0%
Friday	1	8%
Saturday	2	17%
Sunday	4	33%

Pattern Analysis

Data Points: 12
API observations used to build this analysis

Weekdays: 6 flights
Weekend: 6 flights

Balanced Route Consistent schedule

All Flight Routes

2 Routes

Note: This table shows aggregated route data by airline. Each airline may operate multiple daily flights at different times. See the "Spotted Departure Times" section below for all observed departure times.

Airline	Flight Numbers	Aircraft Type	Typical Time	Days Active	Last Seen	Status
Aero K `EOK` / `RF`	-	A320	-	M T W T F S S	Oct 19, 2025	Active
Tway Air `TWB` / `TW`	-	B738	-	M T W T F S S	Aug 30, 2025	Active

Total Routes: 2

Active Routes: 2

Unique Airlines: 2

Aircraft Types: 2

Spotted Departure Times

No departure times available

Departure times will be populated as flight data is collected for this route.