TK21Turkish Airlines · ICN → IST
live · 9m ago
Route confirmed Turkish Airlines

TK21 SeoulICN · 10:40 IstanbulIST · 16:40

TK21 by Turkish Airlines flies from Seoul (ICN) to Istanbul (IST) for the Mon, Nov 9 departure.

Right nowScheduled · gate 40
10:40

departs ICN · on schedule

Typical gate push+16 minmedian posted departure
Typical arrival−35 minmedian over 5 operations
Wins back in air~51 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 6 operations · gate push → arrival
0+30+60+90 min
11-09
−45 arrival
11-07
+2 gate · −30 arrival
11-06
+27 gate · +10 arrival
11-04
+16 gate · −35 arrival
11-02
+4 gate · −45 arrival
10-31
+52 gate

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The last 30 days

arrival outcome per operation

median arrival −35 min · 0 cancelled · 6 operations tracked

The route today

live boards
ICNSeoulOn-time likelyICN delay board →
ISTIstanbulOn-time likelyIST delay board →
ICN→ISTevery carrier, schedules and on-time historyRoute intelligence →

Tomorrow at Istanbul

Forecast

Tue 10 Nov, local date

High14°Clikely 13°C to 15°C
Low8°Clikely 6°C to 11°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Seoul to Istanbul flights today

same route · Turkish Airlines
TK91departs 00:05

If TK21 is cancelled, this is the other Turkish Airlines nonstop flight from Seoul to Istanbul on the same day, with scheduled departure times in ICN local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How TK21 actually runs

Pro Flight Search has tracked every published board update for TK21 across the ICN and IST boards: schedule changes, gate pushes and actual clocks. Usually lands ~35 min early. Based on 5 confirmed landings · 5/5 within 15 min of schedule. Pushes back late but makes up time in the air.

The verdict above is that record speaking, so it reflects how TK21 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
11-09ICN 10:40IST 16:40 15:55 (−45)
11-07ICN 10:40 10:42 (+2)IST 16:40 16:10 (−30)
11-06ICN 10:40 11:07 (+27)IST 16:40 16:50 (+10)
11-04ICN 10:40 10:56 (+16)IST 16:40 16:05 (−35)
11-02ICN 10:40 10:44 (+4)IST 16:40 15:55 (−45)
10-31ICN 10:40 11:32 (+52)IST

Board clocks recorded as ICN and IST published them.

Planning around TK21? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: TK21 Seoul to Istanbul on-time performance, measured from the ICN and IST airport boards.

Canonical URL
https://proflightsearch.com/flight/TK21
How we measure this →