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

Return flights

30 Sep - 03 Oct	KLM
27 Sep - 29 Sep	SWISS
13 Sep - 14 Sep	ITA Airways
23 Sep - 26 Sep	KLM
29 Sep - 03 Oct	Lufthansa
30 Sep - 07 Oct	KLM
11 Sep - 17 Sep	ITA Airways
16 Sep - 19 Sep	KLM
27 Sep - 30 Sep	SWISS
18 Sep - 19 Sep	ITA Airways
24 Sep - 29 Sep	KLM
22 Sep - 26 Sep	ITA Airways
20 Sep - 23 Sep	SWISS
30 Sep - 05 Oct	ITA Airways
29 Sep - 02 Oct	Lufthansa
28 Sep - 01 Oct	Aer Lingus

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.

Book a cheap hotel in Bratislava

Cheap car rent in Bratislava

Cheapest return flights from London to Bratislava in September from $388

Return flights