Cheapest one-way flights from London to Barcelona in September from $112

AirHint found the following cheapest one-way flights from London (LCY) to Barcelona (BCN) in September 2026 (see full year).

One-Way flights

06 Sep British Airways direct
20 Sep British Airways direct
15 Sep British Airways direct
07 Sep British Airways direct
29 Sep British Airways direct
10 Sep British Airways direct
09 Sep KLM
16 Sep KLM
11 Sep British Airways direct
04 Sep British Airways direct

Also check the deals for return 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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