AirHint found the following cheapest return flights from Tallinn (TLL) to Seoul (ICN) in October 2025 (see full year).

Return flights

24 Oct - 09 Nov	Finnair
02 Oct - 08 Oct	Finnair
02 Oct - 09 Oct	Finnair
25 Oct - 09 Nov	Finnair
25 Oct - 10 Nov	Finnair
01 Oct - 16 Oct	Finnair
04 Oct - 20 Oct	Finnair
01 Oct - 09 Oct	Finnair
23 Oct - 03 Nov	Finnair
03 Oct - 18 Oct	Finnair
03 Oct - 19 Oct	Finnair
23 Oct - 08 Nov	Finnair
24 Oct - 08 Nov	Finnair
16 Oct - 27 Oct	Scandinavian Airlines
18 Oct - 30 Oct	Finnair
04 Oct - 19 Oct	Finnair
18 Oct - 03 Nov	Finnair
17 Oct - 01 Nov	LOT
18 Oct - 02 Nov	Finnair
16 Oct - 01 Nov	LOT

Also check the deals for one-way flights from Tallinn to Seoul in October.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Tallinn to Seoul in October from 697€

Return flights