TW421 T'way Air - Flight Status
Below, you can find details about T'way Air flight TW421, which currently operates between the airports of Seoul - Seoul Incheon International Airport (Airport Code ICN) and Ulaanbaatar - Chinggis Khan International Airport (Airport Code UBN).
This flight data pertains specifically to the flight's details for Sunday, June 07, 2026.
Table of contents:
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights TW421
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights TW421
TW421 On Time performance:
n/a
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions. Flight Status
TW421 T'way Air to Ulaanbaatar
Scheduled - On-time
Flight Status for Sunday June 07, 2026
This flight is also scheduled for Tomorrow (June 08, 2026). See it here
Scheduled - On-time
Flight Status for Sunday June 07, 2026
Airline information
T'way Air
Equipment: Airbus A330-300
Departure
Seoul (ICN)
June 07, 2026
Seoul Incheon International Airport
Estimated Departure Time:
10:40
Terminal:
1
Gate:
17
Scheduled Departure Time: 10:40
Arrival
Ulaanbaatar (UBN)
June 07, 2026
Chinggis Khan International Airport
Estimated Arrival Time:
12:54
Terminal:
MAIN
Gate:
-
Scheduled Arrival Time: 13:20
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.seoul-airport.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.
Codeshare Flights
This flight is shared with other airlines, this means that these other flights are the same:
- H15859 - Hooters Air
Additional Information
Which is the frequency of flight TW421?
The flight TW421 is scheduled to flight on Monday, Wednesday, Friday, Sunday on a weekly basis.
Which is the distance of flight TW421?
The distance between the two airports is 1958 kilometers.
Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in Seoul: 2026-06-07 10:40:45
Current Time in Ulaanbaatar: 2026-06-07 09:40:45
The flight TW421 is scheduled to flight on Monday, Wednesday, Friday, Sunday on a weekly basis.
Which is the distance of flight TW421?
The distance between the two airports is 1958 kilometers.
Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in Seoul: 2026-06-07 10:40:45
Current Time in Ulaanbaatar: 2026-06-07 09:40:45
Alternative Flights
The following airlines serves the same route between Seoul and Ulaanbaatar:
Jeju Air
- Flight Number: 7C5203. (On Time performance: 85 - Average Delay: 15 minutes)
Korean Air
- Flight Number: KE2041. (On Time performance: 88 - Average Delay: 6 minutes)
Aero Mongolia
- Flight Number: M0602. (On Time performance: 57 - Average Delay: 14 minutes)
Miat Mongolian Airlines
- Flight Number: OM302. (On Time performance: 96 - Average Delay: 2 minutes)
- Flight Number: OM308. (On Time performance: 98 - Average Delay: 0 minutes)
- Flight Number: OM310.
- Flight Number: OM7308. (On Time performance: 100 - Average Delay: 0 minutes)
Asiana Airlines
- Flight Number: OZ567. (On Time performance: 78 - Average Delay: 20 minutes)
Jeju Air
- Flight Number: 7C5203. (On Time performance: 85 - Average Delay: 15 minutes)
Korean Air
- Flight Number: KE2041. (On Time performance: 88 - Average Delay: 6 minutes)
Aero Mongolia
- Flight Number: M0602. (On Time performance: 57 - Average Delay: 14 minutes)
Miat Mongolian Airlines
- Flight Number: OM302. (On Time performance: 96 - Average Delay: 2 minutes)
- Flight Number: OM308. (On Time performance: 98 - Average Delay: 0 minutes)
- Flight Number: OM310.
- Flight Number: OM7308. (On Time performance: 100 - Average Delay: 0 minutes)
Asiana Airlines
- Flight Number: OZ567. (On Time performance: 78 - Average Delay: 20 minutes)
Punctuality and delays
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.
Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from June 02, 2025 to September 29, 2025. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.
Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from June 02, 2025 to September 29, 2025. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.
Last Past Flights TW421
Date
Departure
Arrival
Duration
Aircraft
Status
Friday
05 June
05 June
10:35
Seoul (ICN)
Seoul (ICN)
13:06
Ulaanbaatar (UBN)
Ulaanbaatar (UBN)
03h 31min
Airbus A330-30
Airbus A330-30
Landed - On-time
Wednesday
03 June
03 June
10:40
Seoul (ICN)
Seoul (ICN)
12:57
Ulaanbaatar (UBN)
Ulaanbaatar (UBN)
03h 17min
Airbus A330-30
Airbus A330-30
Landed - On-time
Monday
01 June
01 June
10:56
Seoul (ICN)
Seoul (ICN)
13:30
Ulaanbaatar (UBN)
Ulaanbaatar (UBN)
03h 34min
Airbus A330-30
Airbus A330-30
Landed - On-time