Cheapest one-way flights from San Francisco to Barcelona in September from $237

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

27 Sep LEVEL direct
28 Sep LEVEL direct
30 Sep LEVEL direct
20 Sep LEVEL direct
22 Sep TAP
16 Sep Alaska Airlines
15 Sep Flair Airlines
14 Sep Alaska Airlines
12 Sep Alaska Airlines
08 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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