AirHint found the following cheapest return flights from San Francisco (SFO) to Barcelona (BCN) in January 2026 (see full year).

Return flights

25 Jan - 09 Feb	Air Canada
12 Jan - 20 Jan	Air Canada
16 Jan - 22 Jan	TAP
16 Jan - 30 Jan	TAP
12 Jan - 19 Jan	TAP
12 Jan - 07 Feb	TAP
19 Jan - 14 Feb	TAP
19 Jan - 18 Feb	TAP
21 Jan - 28 Jan	TAP
16 Jan - 23 Jan	TAP
26 Jan - 02 Feb	TAP
31 Jan - 07 Feb	TAP
25 Jan - 01 Feb	Scandinavian Airlines
05 Jan - 19 Jan	TAP
05 Jan - 31 Jan	TAP
05 Jan - 12 Jan	Delta
08 Jan - 22 Jan	SWISS

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

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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Cheapest return flights from San Francisco to Barcelona in January from $408

Return flights