🇰🇷 CJJ
Cheongju
1295 mi
UBN 🇲🇳
Ulaanbaatar (Sergelen)

Cheongju to Ulaanbaatar (Sergelen) Flights

Cheongju International Airport/Cheongju Air Base (K-59/G-513) Ulaanbaatar Chinggis Khaan International Airport 2 airlines

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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) with a typical flight time of 3h 10m. This route is served by 2 airlines: Aero K, Tway Air. AirportRoutes has tracked 1 unique flight number on this route.

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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

2

Operators

1

Tracked Flight

1295

Miles

3h 10m

Flight Duration

Route Map

Operating Airlines

Airline ICAO IATA
Aero K EOK RF
Tway Air TWB TW

Flight Schedule Pattern

Day Flights Observed Frequency Activity
Monday 0 0%
Tuesday 1 8%
Wednesday 4 31%
Thursday 0 0%
Friday 2 15%
Saturday 2 15%
Sunday 4 31%

Pattern Analysis

1 Tracked Flight:
Data Points: 13
API observations used to build this analysis
Weekdays: 7 flights
Weekend: 6 flights
Business Route More active on weekdays

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 21:35 9:35 PM (Representative)
M T W T F S S
May 8, 2026 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

Departure Time Operator ICAO IATA
21:35 9:35 PM Aero K EOK RF

Time Information

Times are shown in the departure airport's local timezone (RKTU - Asia/Seoul).

Total Departure Times: 1
Time Range:
21:35 - 21:35
These are typical departure times observed from actual flights. Times may vary by season and schedule changes.