Cheapest one-way flights from San Francisco to Barcelona in September from 191€

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

One-Way flights

28 Sep Iberia For Level direct
06 Sep Frontier Airlines
23 Sep Iberia For Level direct
27 Sep Iberia For Level direct
21 Sep Iberia For Level direct
30 Sep Iberia For Level direct
26 Sep Frontier Airlines
22 Sep Frontier Airlines
25 Sep Frontier Airlines
29 Sep Frontier 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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