Cheapest return flights from San Francisco to Barcelona in September from 491€

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

30 Sep - 21 Oct LEVEL direct
30 Sep - 09 Oct LEVEL direct
23 Sep - 21 Oct LEVEL direct
21 Sep - 27 Sep LEVEL direct
27 Sep - 09 Oct LEVEL direct
18 Sep - 29 Oct TAP
04 Sep - 11 Sep Vueling Airlines direct
20 Sep - 11 Oct LEVEL direct
22 Sep - 08 Oct Delta
20 Sep - 24 Oct United
03 Sep - 10 Sep Turkish Airlines
10 Sep - 16 Sep Turkish Airlines
28 Sep - 06 Oct Aer Lingus
10 Sep - 17 Sep TAP
25 Sep - 07 Oct Delta
26 Sep - 29 Sep Turkish Airlines
03 Sep - 10 Sep United direct
10 Sep - 16 Sep United direct
10 Sep - 17 Sep United direct
06 Sep - 13 Sep Turkish Airlines

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.

Book a cheap hotel in Barcelona

Cheap car rent in Barcelona