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

Return flights

04 Mar - 18 Mar	TAP
04 Mar - 11 Mar	TAP
02 Mar - 08 Mar	TAP
02 Mar - 09 Mar	TAP
23 Mar - 31 Mar	Air Canada
24 Mar - 01 Apr	Air Canada
24 Mar - 31 Mar	Air Canada
03 Mar - 10 Mar	Air Canada
10 Mar - 17 Mar	Air Canada
11 Mar - 18 Mar	Air Canada
18 Mar - 25 Mar	Air Canada
25 Mar - 01 Apr	SWISS
25 Mar - 02 Apr	SWISS
31 Mar - 08 Apr	TAP
29 Mar - 16 Apr	Iberia For Level	direct
26 Mar - 02 Apr	Air Canada
31 Mar - 07 Apr	Air Canada
27 Mar - 03 Apr	TAP
30 Mar - 07 Apr	Air Canada
27 Mar - 04 Apr	TAP

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

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 March from 344€

Return flights