How long is the KE643 flight from Seoul to Singapore?

The timetable allows 6 h 50 min. Seoul to Singapore is 4,627 km (2,875 mi).

Which terminal does KE643 use?

It usually leaves from Terminal 2 at Seoul Incheon International Airport (ICN) and arrives at Terminal 4 at Singapore Changi Airport (SIN). Check the flight card above for today's terminal and gate.

What other flight numbers does KE643 have?

Also listed as KAL643 (Korean Air's ICAO code) and KE 643.

KE643 Flight Status Korean Air: Seoul to Singapore (KAL643)

Korean Air KE 643

En-Route, Arriving in 1h58'

ICN Seoul

Scheduled: 14:35
Actual: 14:59

Terminal: 2 | Gate: 249

Departure: Sat, Nov 14, 2026 · local time UTC+9

Seoul Incheon International Airport (ICN)

All ICN Departures >

SIN Singapore

Scheduled: 20:25
Estimated: 20:14
Delay

Terminal: 4 | Gate: G20

Arrival: Sat, Nov 14, 2026 · local time UTC+8

Singapore Changi Airport (SIN)

All SIN Arrivals >

Departed 4h 16m ago · lands in 1h 58m 68%

ICN 14:59 SIN 20:14

3,168 km (1,969 mi) flown · 1,459 km (907 mi) to go

Estimated position based on departure and arrival times, not live tracking. Times are local at each airport.

Add to calendar

Distance: 4627 km / 2875 miles · Scheduled Duration: 06:50 · Typical Duration: 05:45

KE 643 Flight Status & Schedule Korean Air Seoul to Singapore

Date	From	To	Departure	Arrival	Status	Details
Nov 14	ICN	SIN	14:59	20:14	En-Route	Track >
Nov 13	ICN	SIN	15:01	19:53	Landed	Track >
Nov 12	ICN	SIN	15:04	19:49	Landed	Track >
Nov 11	ICN	SIN	15:02	19:48	Landed	Track >
Nov 10	ICN	SIN	16:24	21:08	Landed Late	Track >
Nov 09	ICN	SIN	14:51	19:39	Landed	Track >
Nov 08	ICN	SIN	14:58	19:42	Landed	Track >
Nov 07	ICN	SIN	14:58	19:45	Landed	Track >
Nov 06	ICN	SIN	14:48	19:44	Landed	Track >
Nov 05	ICN	SIN	15:07	20:01	Landed	Track >

Korean Air operates KE 643 from Seoul to Singapore, a 4,627 km (2,875 mi) trip, daily. The timetable allows 6 h 50 min, but the flight usually takes about 5 h 45 min, so it often makes up time. Today it left at 14:59, 24 minutes late, and is due in Singapore at 20:14, 11 minutes early.

< All Seoul ICN Departures All Singapore SIN Arrivals >

About KE 643

Korean Air Flight KE643 connects Seoul, South Korea to Singapore, Singapore, taking off from Seoul Incheon International Airport ICN and landing at Singapore Changi Airport SIN.

Route: Seoul Incheon International Airport ICN to Singapore Changi Airport SIN
Distance: 4,627 km (2,875 mi)
Typical flight time: 5 h 45 min
Flies: Daily
On time: 8 of the last 9
Average delay when late: 43 min
Usually departs from: Terminal 2

KE 643 FAQ

How long is the KE643 flight from Seoul to Singapore?: The timetable allows 6 h 50 min. Seoul to Singapore is 4,627 km (2,875 mi).
How often is KE643 from Seoul to Singapore late?: 1 of the last 9 flights arrived 15 or more minutes late; when late, by 43 minutes on average.
When was the latest KE643 flight from Seoul to Singapore?: The latest KE643 was the 14:35 (local time) departure from Seoul on 13 November 2026; it landed 32 minutes early.
Which days does KE643 fly from Seoul to Singapore?: Daily: it was scheduled on each of the last 7 days.
Which terminal does KE643 use?: It usually leaves from Terminal 2 at Seoul Incheon International Airport (ICN) and arrives at Terminal 4 at Singapore Changi Airport (SIN). Check the flight card above for today's terminal and gate.
What other flight numbers does KE643 have?: Also listed as KAL643 (Korean Air's ICAO code) and KE 643.

KE643 and Seoul ICN to Singapore SIN Flights

Flight KE643 is code-shared by 3 airlines using the flight numbers WS6033, DL7819, OZ9913

Other flights departing from Seoul ICN: CZ6074, ZE623

Other flights arriving at Singapore SIN: SQ236, MU565

All flights connecting Seoul ICN to Singapore SIN.