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

Return flights

29 Sep - 06 Oct	Aegean Airlines
25 Sep - 10 Oct	Scandinavian Airlines
27 Sep - 15 Oct	Eurowings
27 Sep - 17 Oct	Eurowings
27 Sep - 14 Oct	Eurowings
26 Sep - 10 Oct	Eurowings
23 Sep - 02 Oct	Aegean Airlines
30 Sep - 03 Oct	Aegean Airlines
27 Sep - 16 Oct	Eurowings
30 Sep - 29 Oct	Lufthansa
22 Sep - 29 Sep	Aegean Airlines
24 Sep - 29 Sep	SWISS
24 Sep - 30 Sep	SWISS
23 Sep - 30 Sep	SWISS
27 Sep - 29 Sep	Air France
25 Sep - 30 Sep	SWISS
22 Sep - 28 Sep	Aegean Airlines
20 Sep - 26 Sep	Eurowings
21 Sep - 24 Sep	Air France
26 Sep - 29 Sep	KLM

Also check the deals for one-way flights from London 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 London to Tbilisi in September from $372

Return flights