Cheapest return flights from Barcelona to Sydney in September from $1197

Best time to book flights for Barcelona (BCN) to Sydney (SYD) flights at AirHint

AirHint found the following cheapest return flights from Barcelona (BCN) to Sydney (SYD) in September 2025 (see full year).

Return flights

08 Sep - 22 Sep Aegean Airlines
12 Sep - 02 Oct Aegean Airlines
01 Sep - 15 Sep Etihad Airways
01 Sep - 08 Sep Ryanair
01 Sep - 13 Sep United
20 Sep - 27 Sep United
01 Sep - 07 Sep United
17 Sep - 01 Oct United
01 Sep - 19 Sep Austrian Airlines
02 Sep - 02 Oct United
01 Sep - 14 Sep Qatar Airways
21 Sep - 02 Oct Air Canada
07 Sep - 17 Sep Air Canada

Also check the deals for one-way flights from Barcelona to Sydney 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.

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