San Francisco (SFO) to Barcelona (BCN) flight deal from $434 USD in economy class

AYFinnair

Round Trip•Economy

SFO

San Francisco International Airport

San Francisco, United States

BCN

Barcelona Airport

Barcelona, Spain

$977 USD

-56%$434 USD

Verified Dec 1, 2025 at 9:02 AM

December 2025

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 2$1,276 3$3,355 4 5$1,338 6$3,734 7$1,248 8 9$1,036 10 11$3,048 12 13 14$1,316 15$1,004 16$1,191 17$1,571 18 19$3,815 20$3,605 21$3,605 22 23$3,605 24 25$1,868 26 27$1,763 28 29 30$1,178 31$718 1$756 2 3 4

Extremely Rare Availability

3% of dates checked are available within 10% of the lowest price

Sunday, December 21st, 2025

6 round-trip options

Returning

Sun, Dec 28, 2025•7 Day Trip

$3,665 USD

Google Flights

Returning

Tue, Dec 30, 2025•9 Day Trip

$3,605 USD

Google Flights

Returning

Wed, Dec 31, 2025•10 Day Trip

$3,909 USD

Google Flights

Returning

Thu, Jan 1, 2026•11 Day Trip

$5,547 USD

Google Flights

Returning

Sat, Jan 3, 2026•13 Day Trip

$5,673 USD

Google Flights

Returning

Sun, Jan 4, 2026•14 Day Trip

$5,547 USD

Google Flights