Cheapest return flights from San Diego to Barcelona in September from $591

Best time to book flights for San Diego (SAN) to Barcelona (BCN) flights at AirHint

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
22 Sep - 02 Oct Air Canada
17 Sep - 30 Sep American Airlines
26 Sep - 03 Oct United
10 Sep - 17 Sep Air Canada
16 Sep - 23 Sep United
18 Sep - 22 Sep British Airways
11 Sep - 18 Sep United
06 Sep - 13 Sep 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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