Cheapest return flights from Basel to Seoul in September from $643

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

Return flights

09 Sep - 23 Sep Air France
22 Sep - 14 Oct KLM
22 Sep - 13 Oct KLM
01 Sep - 13 Sep Air France
13 Sep - 20 Sep Air France
05 Sep - 21 Sep easyJet
11 Sep - 14 Sep easyJet
22 Sep - 07 Oct KLM
01 Sep - 15 Sep Lufthansa
22 Sep - 06 Oct KLM
11 Sep - 19 Sep KLM
21 Sep - 30 Sep KLM
13 Sep - 26 Sep Air France
12 Sep - 27 Sep Turkish Airlines

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

Skyscanner

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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