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

Return flights

16 Jul - 22 Jul	easyJet
25 Jul - 29 Jul	easyJet
24 Jul - 17 Aug	KLM
21 Jul - 17 Aug	Austrian Airlines
21 Jul - 16 Aug	Austrian Airlines
23 Jul - 17 Aug	AJet
19 Jul - 16 Aug	Wizz Air
18 Jul - 20 Jul	KLM
20 Jul - 17 Aug	Wizz Air
28 Jul - 09 Aug	KLM

Also check the deals for one-way flights from Basel to Seoul in July.

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 July from $937

Return flights