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

Return flights

09 Sep - 12 Sep	KLM
03 Sep - 12 Sep	ITA Airways
27 Sep - 29 Sep	SWISS
27 Sep - 02 Oct	SWISS
16 Sep - 19 Sep	KLM
23 Sep - 24 Sep	ITA Airways
02 Sep - 05 Sep	KLM
01 Sep - 05 Sep	Lufthansa
28 Sep - 04 Oct	ITA Airways
11 Sep - 12 Sep	ITA Airways
29 Sep - 01 Oct	ITA Airways
03 Sep - 13 Sep	ITA Airways
16 Sep - 17 Sep	ITA Airways

Also check the deals for one-way flights from London to Bratislava 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 Bratislava in September from 329€

Return flights