Cheapest return flights from Istanbul to Basel in September from $71

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

Return flights

29 Sep - 08 Oct Pegasus Airlines direct
30 Sep - 09 Oct Pegasus Airlines direct
17 Sep - 24 Sep Pegasus Airlines direct
17 Sep - 21 Sep Pegasus Airlines direct
23 Sep - 25 Sep Pegasus Airlines direct
20 Sep - 25 Sep Pegasus Airlines direct
15 Sep - 18 Sep Pegasus Airlines direct
23 Sep - 30 Sep Pegasus Airlines direct
20 Sep - 21 Sep AJet direct
20 Sep - 22 Sep AJet direct
23 Sep - 01 Oct Pegasus Airlines direct
25 Sep - 07 Oct AJet direct
29 Sep - 07 Oct AJet direct
17 Sep - 19 Sep Pegasus Airlines direct
17 Sep - 23 Sep Pegasus Airlines direct
29 Sep - 04 Oct AJet direct
25 Sep - 02 Oct Pegasus Airlines direct
22 Sep - 02 Oct Pegasus Airlines direct
27 Sep - 01 Oct AJet direct
27 Sep - 04 Oct AJet 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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