Cheapest one-way flights from London to Barcelona in May from $102

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

One-Way flights

23 May Air Serbia
15 May Air Serbia
24 May Air Serbia
31 May Air Serbia
09 May Air Serbia
20 May Air Serbia
21 May Air Serbia
28 May Air Serbia
02 May British Airways direct
26 May British Airways direct

Also check the deals for return flights from London to Barcelona in May.

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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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