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

Return flights

08 Sep - 22 Sep	Pegasus Airlines
13 Sep - 22 Sep	Pegasus Airlines
01 Sep - 30 Sep	AJet
02 Sep - 09 Sep	Pegasus Airlines
12 Sep - 15 Sep	Pegasus Airlines
24 Sep - 28 Sep	AJet
08 Sep - 13 Sep	AJet
01 Sep - 06 Sep	Pegasus Airlines
28 Sep - 05 Oct	Turkish Airlines
03 Sep - 12 Sep	Pegasus Airlines
04 Sep - 07 Sep	AJet

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

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 Tbilisi in September from 201€

Return flights