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

Return flights

29 Sep - 07 Oct	Aer Lingus
22 Sep - 23 Sep	Aer Lingus
23 Sep - 26 Sep	Aer Lingus
22 Sep - 26 Sep	Aer Lingus
29 Sep - 02 Oct	Aer Lingus
29 Sep - 04 Oct	Air France
29 Sep - 30 Sep	Aer Lingus
29 Sep - 05 Oct	Aer Lingus
27 Sep - 30 Sep	LOT
25 Sep - 02 Oct	Air France
28 Sep - 04 Oct	KM Malta Airlines
23 Sep - 25 Sep	Aer Lingus
22 Sep - 25 Sep	Aer Lingus
22 Sep - 27 Sep	Aer Lingus
28 Sep - 29 Sep	KM Malta Airlines
24 Sep - 27 Sep	Aer Lingus
28 Sep - 03 Oct	KLM
28 Sep - 05 Oct	KM Malta Airlines

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 267€

Return flights