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

Return flights

22 Sep - 03 Oct	Aer Lingus
16 Sep - 22 Sep	Aer Lingus
23 Sep - 25 Sep	Aer Lingus
10 Sep - 18 Sep	Aer Lingus
18 Sep - 25 Sep	Vueling Airlines
30 Sep - 03 Oct	Aer Lingus
18 Sep - 19 Sep	Aer Lingus
16 Sep - 18 Sep	Aer Lingus
22 Sep - 25 Sep	Aer Lingus
27 Sep - 04 Oct	Vueling Airlines
27 Sep - 01 Oct	Vueling Airlines
16 Sep - 19 Sep	Aer Lingus
15 Sep - 19 Sep	Aer Lingus
25 Sep - 28 Sep	Brussels Airlines
18 Sep - 02 Oct	Air France
30 Sep - 04 Oct	Lufthansa
29 Sep - 05 Oct	Aer Lingus
30 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 194€

Return flights