T'Way Air TW421 flight status now

TW421 - TWB421 T'Way Air (TW)
ICN Seoul South Korea
Flight ICN to UBN
UBN Ulaanbaatar Mongolia
Contact Airlines It may not operate on the date requested
Departure Incheon International Airport
IATA: ICNICAO: RKSI
Scheduled 11:20
1 128
Arrival Ulaanbaatar International Airport
IATA: UBNICAO: ZMCK
Scheduled 13:50
None None
TW421 Detail
  • Type: International Flight
  • Flight Duration: 3 hours 33 minutes
  • Flight Distance: 1962 kms / 1219 miles
Airline
  • T'Way Air
  • IATA: TW
  • ICAO: TWB
  • Operating Days: Monday, Wednesday, Friday, Sunday
Passenger Services
  • Service type: None
  • Seats: None
  • Freight capacity: None
  • Passenger classes: None
More Detail
  • Aircraft: Boeing 737-800 (winglets) Passenger/BBJ2
  • Callsign: T-F7M
  • Departure Timezone: Asia/Seoul
  • Arrival Timezone: Asia/Ulaanbaatar
  • Current Time in Seoul: Tuesday 2025-11-18 21:42 PM
  • Current Time in Ulaanbaatar: Tuesday 2025-11-18 20:42 PM

International flight T'Way Air TW421 takes off from Seoul (ICN) South Korea to Ulaanbaatar (UBN) Mongolia. It's operated by T'Way Air. The plane leaves Incheon International Airport at 11:20 Asia/Seoul. The flight is expected to land at Ulaanbaatar International Airport at 13:50 Asia/Ulaanbaatar. The flight will last about 3 hours 33 minutes.

Similar flight route from Seoul (ICN) to Ulaanbaatar (UBN)

Airline Flight no Departure Arrival
Korean Air KE5867
Korean Air 		18/11/2025
13:20 		3 hours 45 minutes
16:05
Korean Air KE5649
Korean Air 		18/11/2025
23:55 		3 hours 45 minutes
02:40
Miat - Mongolian Airlines OM308
Miat - Mongolian Airlines 		18/11/2025
23:55 		3 hours 45 minutes
02:40
Jeju Air 7C5203
Jeju Air 		18/11/2025
11:30 		3 hours 45 minutes
14:15
Miat - Mongolian Airlines OM302
Miat - Mongolian Airlines 		18/11/2025
13:20 		3 hours 45 minutes
16:05
Asiana Airlines OZ567
Asiana Airlines 		18/11/2025
20:45 		3 hours 45 minutes
23:30
Etihad Airways EY8460
Etihad Airways 		18/11/2025
20:45 		3 hours 45 minutes
23:30
Miat - Mongolian Airlines OM5302
Miat - Mongolian Airlines 		18/11/2025
07:45 		3 hours 48 minutes
10:25

Frequently asked questions, answered

How long is the flight from Seoul to Ulaanbaatar?

On average, nonstop flight takes 3 hour(s) 33 minutes, with the flight distance of 1962 km (1219 miles).

What type of aircraft is used for the T'Way Air TW421 flight?

All T'Way Air TW421 flights are operated using Boeing 737-800 (winglets) Passenger/BBJ2 aircraft.

How many T'Way Air TW421 flights are operated a week?

4 flights per week. The Flight T'Way Air TW421 is operated on Monday, Wednesday, Friday, Sunday.