What is the current status of flight tw421?

Flight tw421 has not departed yet and is currently on schedule. Scheduled departure 10:40, arrival 13:20 (updated Sep 20, 2026).

Is flight tw421 on time today?

Flight tw421 has not departed yet and is currently on schedule. Scheduled departure is 10:40, with arrival at 13:20. Recheck gate and timing before you head to the airport.

Has flight tw421 departed yet? What is the departure time?

Flight tw421 is scheduled to depart at 10:40. The latest actual or estimated departure time is 10:40, and the current status is Scheduled (updated Sep 20, 2026).

When is flight tw421 scheduled to arrive?

Flight tw421 is scheduled to arrive at 13:20. The latest estimated or actual arrival time is 13:20. Status is Scheduled as of Sep 20, 2026.

What route does flight tw421 fly?

Flight tw421 is operated by Trinity Airways from Seoul (ICN) to Ulaanbaatar (UBN). Typical flight time is about 3 hours 40 minutes; operating days may include Sunday.

How can I check real-time status for flight tw421?

Track flight tw421 on this Trip.com status page for live departure, arrival, gate and baggage updates. For push alerts on the go, open the same flight in the Trip.com App and turn on flight notifications.

If flight tw421 is delayed or canceled, what should I do?

If tw421 is delayed or canceled, first confirm the latest status here (Scheduled, updated Sep 20, 2026). Contact Trinity Airways or your booking channel for rebooking or refund options, and check Trip.com Manage Booking if you booked on Trip.com.

Has flight tw421 departed from Seoul?

Flight tw421 has not departed from Seoul (ICN) yet and is currently on schedule for 10:40.

Trinity Airways

TW421 Flight status

According to Trip.com real-time data, the TW421 flight operated by Trinity Airways on Sep 20, 2026 is scheduled to fly from Seoul (ICN) to Ulaanbaatar (UBN). The flight is expected to depart at 10:40 (local time in Seoul, UTC+9) and arrive at 13:20 (local time in Ulaanbaatar, UTC+8) .

Fri, Sep 18

Sun, Sep 20

Mon, Sep 21

SEL-ULN

Access more flight status info on the Trip.com app

Delayed

Your flight is about 0m late

Seoul(ICN)

10:40

Scheduled: 10:40, Sep 18

Incheon International Airport T1

3h 40m

Ulaanbaatar(UBN)

13:20

Scheduled: 13:20, Sep 18

Chinggis Khaan International Airport

Check-in Counter

A01-C34

Boarding Gate

Arrival Gate

Baggage

SEL-ULN

Access more flight status info on the Trip.com app

Scheduled

Your flight will depart on time.

Seoul(ICN)

10:40

Scheduled: 10:40, Sep 20

Incheon International Airport

3h 40m

Ulaanbaatar(UBN)

13:20

Scheduled: 13:20, Sep 20

Chinggis Khaan International Airport

Check-in Counter

A,B

Boarding Gate

Arrival Gate

Baggage

SEL-ULN

Access more flight status info on the Trip.com app

Scheduled

Your flight will depart on time.

Seoul(ICN)

10:40

Scheduled: 10:40, Sep 21

Incheon International Airport T1

3h 40m

Ulaanbaatar(UBN)

13:20

Scheduled: 13:20, Sep 21

Chinggis Khaan International Airport

Check-in Counter

A,B

Boarding Gate

Arrival Gate

Baggage

Information provided by VariFlight For real-time updates, please check airport displays or contact your airline.

Trip.com

Cheap Flights

Mongolia

Ulaanbaatar

TW421

TW421 Aircraft Details

Plane model info unavailable

Punctuality (Departure)

63%

Punctuality (Arrival)

100%

Early on average

14 minutes

Age

Seats

Flight Distance

Economy

Premium Economy

Business

First

In-Flight Services

None

Unknown

Seat Information

Legroom

Seat width

Reclining Angle

Seat layout example

In-Flight Services

None

Unknown

Seat Information

Legroom

Seat width

Reclining Angle

Seat layout example

In-Flight Services

None

Unknown

Seat Information

Legroom

Seat width

Reclining Angle

Seat layout example

In-Flight Services

None

Unknown

Seat Information

Legroom

Seat width

Reclining Angle

Seat layout example

Flight History for TW421

Check more records from Trip.com about TW421 before and after today

Date	Airport		Aircraft Model	Departure	Arrival	Status
Date	Departure	Arrival	Aircraft Model	Departure	Arrival	Status
Fri, Sep 11	Seoul (ICN)	Ulaanbaatar (UBN)	333	11:04	13:03	Arrived
Sun, Sep 13	Seoul (ICN)	Ulaanbaatar (UBN)	333	11:00	13:06	Arrived
Mon, Sep 14	Seoul (ICN)	Ulaanbaatar (UBN)	B38M	11:01	13:08	Arrived
Wed, Sep 16	Seoul (ICN)	Ulaanbaatar (UBN)	B38M	11:08	13:06	Arrived
Fri, Sep 18	Seoul (ICN)	Ulaanbaatar (UBN)		10:40	13:20	Delayed
Sun, Sep 20	Seoul (ICN)	Ulaanbaatar (UBN)		10:40	13:20	Scheduled
Mon, Sep 21	Seoul (ICN)	Ulaanbaatar (UBN)		10:40	13:20	Scheduled

text.text............fake.row.text............text.........fake row ...text

Check upcoming flights with our app

TW421 On-Time Performance

Based on the average performance of this flight over the last 30 trips, the on-time departure rate of TW421 is 63% (Late on average 27 minutes), and the on-time arrival rate is 100% (Early on average 14 minutes).

On-Time Departures

Punctuality

63%

Late on average 27 minutes

Early

On time

63%

30 mins late

37%

60 mins late

90 mins late

Cancelled

On-Time Arrivals

Punctuality

100%

Early on average 14 minutes

Early

93%

On time

30 mins late

60 mins late

90 mins late

Cancelled

Cheap return flights to Seoul

Tue, Nov 10
Ulaanbaatar (ULN)Seoul (SEL)
Jeju Air
One way
20% off
VND 4,223,000VND 3,385,000
Sun, Nov 15
Ulaanbaatar (ULN)Seoul (SEL)
Jeju Air
One way
15% off
VND 4,223,000VND 3,583,000
Tue, Nov 3
Ulaanbaatar (ULN)Seoul (SEL)
Jeju Air
One way
11% off
VND 4,223,000VND 3,750,000
Thu, Nov 5
Ulaanbaatar (ULN)Seoul (SEL)
Jeju Air
One way
10% off
VND 4,223,000VND 3,785,000
Tue, Nov 17
Ulaanbaatar (ULN)Seoul (SEL)
Jeju Air
One way
10% off
VND 4,223,000VND 3,796,000
Thu, Nov 19
Ulaanbaatar (ULN)Seoul (SEL)
Jeju Air
One way
10% off
VND 4,223,000VND 3,800,000

More Cheap Flights

Flight FAQs

What is the current status of flight tw421?
Flight tw421 has not departed yet and is currently on schedule. Scheduled departure 10:40, arrival 13:20 (updated Sep 20, 2026).
Is flight tw421 on time today?
Flight tw421 has not departed yet and is currently on schedule. Scheduled departure is 10:40, with arrival at 13:20. Recheck gate and timing before you head to the airport.
Has flight tw421 departed yet? What is the departure time?
Flight tw421 is scheduled to depart at 10:40. The latest actual or estimated departure time is 10:40, and the current status is Scheduled (updated Sep 20, 2026).
When is flight tw421 scheduled to arrive?
Flight tw421 is scheduled to arrive at 13:20. The latest estimated or actual arrival time is 13:20. Status is Scheduled as of Sep 20, 2026.
What route does flight tw421 fly?
Flight tw421 is operated by Trinity Airways from Seoul (ICN) to Ulaanbaatar (UBN). Typical flight time is about 3 hours 40 minutes; operating days may include Sunday.
How can I check real-time status for flight tw421?
Track flight tw421 on this Trip.com status page for live departure, arrival, gate and baggage updates. For push alerts on the go, open the same flight in the Trip.com App and turn on flight notifications.
If flight tw421 is delayed or canceled, what should I do?
If tw421 is delayed or canceled, first confirm the latest status here (Scheduled, updated Sep 20, 2026). Contact Trinity Airways or your booking channel for rebooking or refund options, and check Trip.com Manage Booking if you booked on Trip.com.
Has flight tw421 departed from Seoul?
Flight tw421 has not departed from Seoul (ICN) yet and is currently on schedule for 10:40.