Cheapest return flights from Istanbul to Basel in September from $169

Best time to book flights for Istanbul (IST) to Basel (BSL) flights at AirHint

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

Return flights

17 Sep - 24 Sep Pegasus Airlines direct
16 Sep - 24 Sep AJet direct
16 Sep - 24 Sep Pegasus Airlines
24 Sep - 30 Sep Pegasus Airlines
19 Sep - 18 Oct Pegasus Airlines
19 Sep - 18 Oct Pegasus Airlines direct
12 Sep - 15 Sep Pegasus Airlines
12 Sep - 14 Sep Pegasus Airlines
24 Sep - 30 Sep AJet direct
17 Sep - 20 Sep Pegasus Airlines
05 Sep - 07 Sep Pegasus Airlines
12 Sep - 15 Sep Pegasus Airlines direct

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

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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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