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

One-Way flights

13 Jan	Alaska Airlines
18 Jan	Alaska Airlines
10 Jan	Alaska Airlines
28 Jan	Alaska Airlines
23 Jan	Alaska Airlines
11 Jan	Alaska Airlines
25 Jan	Alaska Airlines
12 Jan	Alaska Airlines
16 Jan	Alaska Airlines
17 Jan	Alaska Airlines

Also check the deals for return 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 one-way flights from San Francisco to Barcelona in January from 227€

One-Way flights