Cheapest return flights from London to Barcelona in September from $166

AirHint found the following cheapest return flights from London (LHR) to Barcelona (BCN) in September 2026 (see full year).

Return flights

08 Sep - 16 Sep British Airways direct
10 Sep - 24 Sep British Airways direct
05 Sep - 09 Sep British Airways direct
16 Sep - 21 Sep British Airways direct
05 Sep - 12 Sep British Airways direct
04 Sep - 09 Sep British Airways direct
12 Sep - 27 Sep Iberia direct
13 Sep - 27 Sep Iberia direct
01 Sep - 06 Sep Iberia direct
03 Sep - 07 Sep Iberia direct
27 Sep - 01 Oct Iberia
28 Sep - 05 Oct Brussels Airlines
30 Sep - 07 Oct Eurowings

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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