Cheapest one-way flights from London to Barcelona in September from 70€

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

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

One-Way flights

07 Sep British Airways direct
08 Sep British Airways direct
01 Sep British Airways direct
05 Sep British Airways direct
17 Sep British Airways direct
16 Sep British Airways direct
24 Sep British Airways direct
09 Sep British Airways direct
21 Sep British Airways direct
29 Sep ITA Airways

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

Skyscanner

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.

Book a cheap hotel in Barcelona

Cheap car rent in Barcelona