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

Return flights

24 Sep - 01 Oct	Wizz Air Malta
19 Sep - 26 Sep	easyJet
23 Sep - 02 Oct	easyJet
08 Sep - 17 Sep	Wizz Air
20 Sep - 04 Oct	easyJet
16 Sep - 23 Sep	easyJet
22 Sep - 28 Sep	Ryanair
08 Sep - 14 Sep	easyJet
01 Sep - 04 Sep	Ryanair
01 Sep - 05 Sep	Ryanair
05 Sep - 07 Sep	Wizz Air Malta
04 Sep - 07 Sep	Ryanair
13 Sep - 04 Oct	Fly One
20 Sep - 11 Oct	Fly One
13 Sep - 17 Sep	Fly One

Also check the deals for one-way flights from Lisbon 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 Lisbon to Tbilisi in September from $382

Return flights