TWB721

For travellers

Departure · Seoul (GMP)

Gate 16

Scheduled 01 Oct 14:15 · Departed 01 Oct 14:29 · +14 min

Board status: Departed

Airborne since 01 Oct 14:21 (ADS-B)

Arrival · Jeju City (CJU)

Gate 1

Scheduled 01 Oct 15:30 · Landed 01 Oct 15:20 · early

Board status: Arrived

Landed 01 Oct 15:20 (airport data)

Board data from cju, gmp, updated 1332 min ago; times local to each airport.

Flight

Status

Completed (landing confirmed by airport data)

Arrival confirmed via

Airport data (confirmed)

Departure

Gimpo International Airport (GMP) — Seoul, South Korea

Scheduled departure

2026-10-01 05:15 UTC

Departed

2026-10-01 05:21 UTC

Arrival

Jeju International Airport (CJU) — Jeju City, South Korea

Scheduled arrival

2026-10-01 06:30 UTC

Also flies as

TW721

Distance flown

400 km

Straight-line distance

451 km

Aircraft

Registration

HL8738

Type

Boeing 737-800

CO2 (EMEP est., total)

11.2 t (55 kg/pax Economy, 113 kg/pax Business)

Altitude & speed

Max altitude

20,000 ft

Max ground speed

426 kt

Tracked

42m · 399 km

Altitude (ft, max 20,000)

Ground speed (kt, max 426)

Altitude (ft, max 20,000)

Ground speed (kt, max 426)

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

Route map

Airlines

Korean Air (KAL)

T'way Air (TWB)

Latest flights

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-10-01 05:21 UTC	TWB721	GMP → CJU Seoul → Jeju City	HL8738	Boeing 737-800	Completed (landing confirmed by airport data)	~519 km est. (400 km recorded)
2026-09-29 05:17 UTC	TWB721	GMP → ? Seoul → ?	HL8514	Boeing 737 MAX 8	Incomplete (signal lost)	411 km
2026-09-26 06:37 UTC	TWB721	GMP → ? Seoul → ?	HL8737	Boeing 737-800	Incomplete (signal lost)	445 km
2026-09-24 05:36 UTC	TWB721	GMP → ? Seoul → ?	HL8755	Boeing 737 MAX 8	Incomplete (signal lost)	398 km
2026-09-22 05:22 UTC	TWB721	GMP → ? Seoul → ?	HL8220	Boeing 737-800	Incomplete (signal lost)	395 km
2026-09-19 05:22 UTC	TWB721	GMP → ? Seoul → ?	HL8737	Boeing 737-800	Incomplete (signal lost)	411 km
2026-09-17 05:45 UTC	TWB721	GMP → ? Seoul → ?	HL8220	Boeing 737-800	Incomplete (signal lost)	398 km
2026-09-15 05:21 UTC	TWB721	GMP → ? Seoul → ?	HL8323	Boeing 737-800	Incomplete (signal lost)	424 km
2026-09-12 05:41 UTC	TWB721	GMP → ? Seoul → ?	HL8547	Boeing 737-800	Incomplete (signal lost)	442 km
2026-09-10 05:30 UTC	TWB721	GMP → ? Seoul → ?	HL8327	Boeing 737-800	Incomplete (signal lost)	424 km
2026-09-08 05:29 UTC	TWB721	GMP → ? Seoul → ?	HL8235	Boeing 737-800	Incomplete (signal lost)	409 km
2026-09-05 05:23 UTC	TWB721	GMP → ? Seoul → ?	HL8378	Boeing 737-800	Incomplete (signal lost)	403 km
2026-09-03 05:28 UTC	TWB721	GMP → PUS Seoul → Busan	HL8070	Boeing 737-800	Completed	~691 km est. (430 km recorded)
2026-09-01 05:21 UTC	TWB721	GMP → ? Seoul → ?	HL8070	Boeing 737-800	Completed	385 km
2026-08-29 05:23 UTC	TWB721	GMP → ? Seoul → ?	HL8326	Boeing 737-800	Completed	442 km
2026-08-27 05:34 UTC	TWB721	? → ?	HL8522	AIRBUS INDUSTRIES A350 941	Completed	16 km
2026-08-27 05:20 UTC	TWB721	GMP → ? Seoul → ?	HL8564	Boeing 737-800	Completed	435 km
2026-08-25 05:23 UTC	TWB721	GMP → ? Seoul → ?	HL8737	Boeing 737-800	Completed	416 km
2026-08-22 05:26 UTC	TWB721	GMP → ? Seoul → ?	HL8564	Boeing 737-800	Completed	651 km
2026-08-20 05:25 UTC	TWB721	GMP → ? Seoul → ?	HL8378	Boeing 737-800	Completed	670 km
2026-08-18 05:26 UTC	TWB721	GMP → ? Seoul → ?	HL8300	Boeing 737-800	Completed	519 km