Cheapest return flights from San Francisco to Barcelona in September from 417€

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

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

Return flights

21 Sep - 27 Sep LEVEL direct
21 Sep - 30 Sep LEVEL direct
22 Sep - 29 Sep TAP
23 Sep - 30 Sep LEVEL direct
24 Sep - 01 Oct TAP
27 Sep - 07 Oct Iberia
25 Sep - 15 Oct TAP
09 Sep - 29 Sep TAP
27 Sep - 07 Oct LEVEL direct
20 Sep - 24 Oct Iberia
09 Sep - 18 Sep TAP
09 Sep - 23 Sep TAP
24 Sep - 01 Oct United direct
02 Sep - 14 Sep TAP
30 Sep - 05 Oct Vueling Airlines
20 Sep - 11 Oct LEVEL direct
04 Sep - 21 Sep LEVEL direct
26 Sep - 08 Oct Delta
09 Sep - 23 Sep LEVEL direct
27 Sep - 04 Oct TAP

Also check the deals for one-way 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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