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

Return flights

08 Sep - 16 Sep	Pegasus Airlines
19 Sep - 26 Sep	Pegasus Airlines
20 Sep - 04 Oct	Wizz Air Malta
04 Sep - 11 Sep	Lufthansa
05 Sep - 12 Sep	Austrian Airlines
05 Sep - 09 Sep	Austrian Airlines
05 Sep - 08 Sep	Austrian Airlines
28 Sep - 12 Oct	easyJet

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 $277

Return flights