AirHint found the following cheapest return flights from Adelaide (ADL) to Barcelona (BCN) in October 2025 (see full year).

Return flights

28 Oct - 11 Nov	Singapore Airlines
13 Oct - 21 Oct	Singapore Airlines
12 Oct - 21 Oct	Singapore Airlines
13 Oct - 22 Oct	Singapore Airlines
12 Oct - 22 Oct	Singapore Airlines
10 Oct - 22 Oct	Singapore Airlines
11 Oct - 22 Oct	Singapore Airlines
11 Oct - 21 Oct	Emirates

Also check the deals for one-way flights from Adelaide to Barcelona in October.

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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Cheapest return flights from Adelaide to Barcelona in October from 1147€

Return flights