TK21 Turkish Airlines - Flight Status

Which is the frequency of flight TK21?
The flight TK21 is scheduled to flight on Monday, Wednesday, Friday, Saturday on a weekly basis.

Which is the distance of flight TK21?
The distance between the two airports is 7927 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: 2026-03-14 04:57:06
Current Time in Istanbul: 2026-03-13 22:57:06

The following airlines serves the same route between Seoul and Istanbul:

Korean Air
- Flight Number: KE955.

Asiana Airlines
- Flight Number: OZ551.

Turkish Airlines
- Flight Number: TK91.

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 March 03, 2025 to March 22, 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.