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

Return flights

07 Sep - 24 Sep	British Airways
01 Sep - 17 Sep	Aegean Airlines
08 Sep - 17 Sep	Aegean Airlines
20 Sep - 04 Oct	British Airways
15 Sep - 26 Sep	British Airways
20 Sep - 24 Sep	British Airways
27 Sep - 01 Oct	Eurowings
27 Sep - 08 Oct	Eurowings
13 Sep - 17 Sep	Eurowings
27 Sep - 03 Oct	Eurowings
27 Sep - 04 Oct	Eurowings
13 Sep - 24 Sep	Eurowings
06 Sep - 17 Sep	Eurowings
21 Sep - 28 Sep	British Airways
20 Sep - 22 Sep	SWISS
29 Sep - 03 Oct	Aegean Airlines
27 Sep - 11 Oct	Eurowings
25 Sep - 01 Oct	Aegean Airlines
17 Sep - 01 Oct	Austrian Airlines
19 Sep - 04 Oct	Aegean Airlines

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 272€

Return flights