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

Return flights

24 Sep - 15 Oct	Aegean Airlines
30 Sep - 28 Oct	Turkish Airlines
25 Sep - 04 Oct	Turkish Airlines
24 Sep - 02 Oct	Turkish Airlines
25 Sep - 02 Oct	Turkish Airlines
24 Sep - 01 Oct	Aegean Airlines
28 Sep - 10 Oct	British Airways	direct
30 Sep - 08 Oct	LOT
30 Sep - 23 Oct	LOT
27 Sep - 29 Sep	Air France
25 Sep - 01 Oct	SWISS
26 Sep - 29 Sep	Air France
23 Sep - 28 Sep	Air France
27 Sep - 28 Sep	Air France
23 Sep - 30 Sep	SWISS
24 Sep - 29 Sep	Air France
22 Sep - 25 Sep	Aegean Airlines
24 Sep - 30 Sep	SWISS
23 Sep - 26 Sep	Vueling Airlines
26 Sep - 30 Sep	Eurowings

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 327€

Return flights