Cheapest return flights from San Diego to Barcelona in September from $592

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

Return flights

21 Sep - 30 Sep Air Canada
17 Sep - 30 Sep Austrian Airlines
22 Sep - 30 Sep Delta
10 Sep - 16 Sep Air Canada
06 Sep - 17 Sep Delta
17 Sep - 27 Sep Austrian Airlines
04 Sep - 11 Sep Frontier Airlines
27 Sep - 04 Oct United
15 Sep - 22 Sep United
25 Sep - 02 Oct United
20 Sep - 11 Oct British Airways
25 Sep - 28 Sep SWISS
11 Sep - 16 Sep Air Canada
17 Sep - 11 Oct British Airways
12 Sep - 04 Oct Air Canada
18 Sep - 01 Oct United

Also check the deals for one-way flights from San Diego 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.

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