Cheapest return flights from San Francisco to Barcelona in October from $446

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 October 2025 (see full year).

Return flights

23 Oct - 06 Nov Iberia
01 Oct - 31 Oct SWISS
12 Oct - 23 Oct Finnair
01 Oct - 15 Oct TAP
09 Oct - 16 Oct LEVEL direct
12 Oct - 23 Oct United direct
01 Oct - 13 Oct TAP
11 Oct - 30 Oct Air Canada
03 Oct - 15 Oct Scandinavian Airlines
02 Oct - 15 Oct TAP
03 Oct - 17 Oct United direct

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

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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