Cheapest return flights from London to Barcelona in September from 126€

Best time to book flights for London (LCY) to Barcelona (BCN) flights at AirHint

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

Return flights

14 Sep - 18 Sep British Airways direct
10 Sep - 18 Sep British Airways direct
17 Sep - 19 Sep British Airways direct
16 Sep - 18 Sep British Airways direct
11 Sep - 16 Sep British Airways direct
05 Sep - 12 Sep British Airways direct
01 Sep - 09 Sep British Airways direct
12 Sep - 16 Sep British Airways direct
10 Sep - 17 Sep British Airways direct
02 Sep - 09 Sep British Airways direct
26 Sep - 01 Oct ITA Airways
27 Sep - 02 Oct ITA Airways
26 Sep - 01 Oct British Airways direct

Also check the deals for one-way flights from London to Barcelona in September.

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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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