Cheapest one-way flights from San Diego to Barcelona in September from $256

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

One-Way flights

22 Sep Spirit Airlines
21 Sep Spirit Airlines
28 Sep Spirit Airlines
26 Sep Frontier Airlines
17 Sep Spirit Airlines
07 Sep Frontier Airlines
11 Sep Frontier Airlines
02 Sep Spirit Airlines
14 Sep Air Canada
06 Sep Delta

Also check the deals for return 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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