The Ulaanbaatar (Sergelen) to Seoul route connects Ulaanbaatar Chinggis Khaan International Airport (UBN) in MN with Incheon International Airport (ICN) in KR. This medium-haul flight covers approximately 1500 miles (2414 km) with a typical flight time of 2h 53m. This route is served by 6 airlines: Mongolian, Korean Air, Aero Mongolia and others. AirportRoutes has tracked 8 unique flight numbers on this route.
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The Ulaanbaatar (Sergelen) (UBN) → Seoul Incheon (ICN) route links Mongolia’s capital with South Korea’s primary global hub across 1,217 miles (1,959 km). Nonstop flights typically take about 3.5–4 hours, making it one of the fastest ways for Mongolian travelers to access East Asia’s extensive onward connections. Passengers choose this route for business ties, K-pop and shopping trips, medical visits, and convenient transfers via ICN to Japan, Southeast Asia, and North America. For Korean visitors, it’s a direct gateway to Mongolia’s steppe landscapes and cultural festivals. Expect a short-haul international experience with standard passport control, baggage screening, and a clear time-zone shift that can affect same-day plans.
Book early for the best fares, especially around summer holidays and major Korean events; typical round-trip prices often range from ₩250,000–₩500,000 (about $190–$380) depending on season and baggage. Compare fares with and without checked luggage—some tickets are carry-on only. At UBN, arrive 2–3 hours before departure; services are limited compared with larger hubs, so bring snacks and download entertainment. At ICN, follow clear bilingual signage for immigration, baggage claim, and the AREX/train or airport buses into Seoul. On board, expect light service on this 1,217-mile (1,959 km) sector; pack a layer for cabin temperature and keep a pen handy for any arrival forms.
Seoul blends royal heritage with cutting-edge neighborhoods and late-night energy. Start with Gyeongbokgung Palace and nearby Bukchon Hanok Village for traditional architecture, then contrast it with Dongdaemun Design Plaza and the shopping streets of Myeongdong. For skyline views, visit N Seoul Tower or walk along the Han River parks. Food is a major draw: try samgyeopsal (grilled pork), bibimbap, tteokbokki, and Korean fried chicken with local beer; explore markets like Gwangjang for bindaetteok and street snacks. Popular areas include Hongdae for youth culture, Insadong for crafts and tea houses, and Gangnam for upscale dining and modern malls.
The most comfortable months are April–May and September–October, with mild temperatures and lower humidity. June–August brings heat and monsoon periods, while December–February is cold but can be good value outside holiday peaks. Prices often rise around Lunar New Year (Seollal) and Chuseok, plus summer school vacations; aim for mid-week departures to save. Shoulder-season flights may offer better deals, commonly around ₩250,000–₩350,000 (about $190–$270) round trip when booked in advance.
Ulaanbaatar Chinggis Khaan International Airport
ZMCKUBNRKSIICN6
Operators8
Tracked Flights1500
Miles2h 53m
Flight Duration
| Airline | ICAO | IATA |
|---|---|---|
| Mongolian |
MGL
|
OM
|
| Korean Air |
KAL
|
KE
|
| Aero Mongolia |
MNG
|
M0
|
| Asiana |
AAR
|
OZ
|
| Jeju Air |
JJA
|
7C
|
| Tway Air |
TWB
|
TW
|
| Day | Flights Observed | Frequency | Activity |
|---|---|---|---|
| Monday | 77 | 15% |
|
| Tuesday | 59 | 11% |
|
| Wednesday | 92 | 18% |
|
| Thursday | 82 | 16% |
|
| Friday | 67 | 13% |
|
| Saturday | 74 | 14% |
|
| Sunday | 66 | 13% |
|
Pattern Analysis
| Airline | Flight Numbers | Aircraft Type | Typical Time | Days Active | Last Seen | Status |
|---|---|---|---|---|---|---|
|
Aero Mongolia
MNG
/ M0
|
A319 | 11:30 11:30 AM (Representative) |
M
T
W
T
F
S
S
|
Jul 3, 2026 | Active | |
|
Asiana
AAR
/ OZ
|
A21N | 00:25 12:25 AM (Representative) |
M
T
W
T
F
S
S
|
Jul 3, 2026 | Active | |
|
Jeju Air
JJA
/ 7C
|
B738 | 13:40 1:40 PM (Representative) |
M
T
W
T
F
S
S
|
Jul 3, 2026 | Active | |
|
Korean Air
KAL
/ KE
|
A333 | 13:00 1:00 PM (Representative) |
M
T
W
T
F
S
S
|
Jul 3, 2026 | Active | |
|
Mongolian
MGL
/ OM
|
|
A319 | 11:30 11:30 AM (Representative) |
M
T
W
T
F
S
S
|
Jul 3, 2026 | Active |
|
Tway Air
TWB
/ TW
|
- | B738 | - |
M
T
W
T
F
S
S
|
Jul 3, 2026 | Active |
| Departure Time | Operator | ICAO | IATA |
|---|---|---|---|
| 00:25 12:25 AM | Asiana |
AAR
|
OZ
|
| 11:30 11:30 AM | Aero Mongolia |
MNG
|
M0
|
| 11:30 11:30 AM | Mongolian |
MGL
|
OM
|
| 13:00 1:00 PM | Korean Air |
KAL
|
KE
|
| 13:40 1:40 PM | Jeju Air |
JJA
|
7C
|
Time Information
Times are shown in the departure airport's local timezone (ZMCK - Asia/Ulaanbaatar).