Cheapest one-way flights from San Francisco to Barcelona in September from 209€

Best time to book flights for San Francisco (SFO) to Barcelona (BCN) flights at AirHint

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

One-Way flights

30 Sep LEVEL direct
23 Sep LEVEL direct
27 Sep LEVEL direct
21 Sep LEVEL direct
02 Sep LEVEL direct
13 Sep LEVEL direct
06 Sep LEVEL direct
04 Sep LEVEL direct
11 Sep LEVEL direct
19 Sep Alaska Airlines

Also check the deals for return flights from San Francisco 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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