Cheapest return flights from San Francisco to Barcelona in September from 347€

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

Return flights

23 Sep - 30 Sep Iberia For Level direct
23 Sep - 23 Oct Iberia For Level direct
30 Sep - 07 Oct Iberia For Level direct
21 Sep - 18 Oct Iberia
30 Sep - 08 Oct United
29 Sep - 10 Oct United
16 Sep - 30 Sep Iberia For Level direct
16 Sep - 02 Oct Iberia For Level direct
20 Sep - 02 Oct Delta
17 Sep - 25 Sep ITA Airways
21 Sep - 18 Oct Iberia For Level direct
20 Sep - 02 Oct Iberia For Level direct
11 Sep - 18 Sep TAP
23 Sep - 26 Sep Iberia
25 Sep - 07 Oct TAP
13 Sep - 20 Sep Iberia For Level direct
04 Sep - 23 Sep Iberia For Level direct
06 Sep - 23 Sep Iberia For Level direct
16 Sep - 23 Sep Iberia For Level direct
20 Sep - 27 Sep Iberia For Level direct

Also check the deals for one-way flights from San Francisco to Barcelona in September.

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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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