AirHint found the following cheapest return flights from London (LCY) to Vilnius (VNO) in September 2025 (see full year).

Return flights

25 Sep - 30 Sep	SWISS
11 Sep - 25 Sep	Lufthansa
01 Sep - 25 Sep	SWISS
04 Sep - 11 Sep	SWISS
01 Sep - 23 Sep	SWISS
04 Sep - 09 Sep	SWISS
01 Sep - 09 Sep	SWISS
27 Sep - 02 Oct	SWISS
03 Sep - 25 Sep	Lufthansa
02 Sep - 16 Sep	Lufthansa
16 Sep - 25 Sep	Lufthansa
18 Sep - 02 Oct	SWISS
17 Sep - 15 Oct	KLM
25 Sep - 02 Oct	KLM
22 Sep - 03 Oct	KLM
29 Sep - 03 Oct	KLM
29 Sep - 02 Oct	KLM
29 Sep - 06 Oct	KLM
29 Sep - 07 Oct	KLM
27 Sep - 06 Oct	KLM

Also check the deals for one-way flights from London to Vilnius 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 Vilnius in September from 209€

Return flights