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

Return flights

15 Oct - 20 Oct	Ryanair
02 Oct - 13 Oct	easyJet
22 Oct - 06 Nov	Ryanair
02 Oct - 12 Oct	easyJet
12 Oct - 19 Oct	Pegasus Airlines
16 Oct - 03 Nov	easyJet
25 Oct - 08 Nov	easyJet
24 Oct - 01 Nov	easyJet
30 Oct - 10 Nov	Lufthansa
18 Oct - 02 Nov	easyJet
11 Oct - 25 Oct	Pegasus Airlines
28 Oct - 04 Nov	Lufthansa
17 Oct - 21 Oct	Turkish Airlines

Also check the deals for one-way flights from Basel 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 Basel to Seoul in October from 586€

Return flights