OPO to SFO from $734 in economy

AFAir France

DLDelta Air Lines

KLKLM

Round Trip•Economy

OPO

Francisco Sá Carneiro Airport

Porto, Portugal

SFO

San Francisco International Airport

San Francisco, United States

$876 USD

-16%$734 USD

Verified about 3 hours ago

September 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

31 1 2 3 4 5 6 7 8 9 10 11 12 13 14$1,280 15$984 16$979 17$909 18$921 19$926 20$1,110 21$803 22$734 23$734 24$734 25$739 26$739 27$1,010 28$749 29$740 30$739 1$740 2$746 3$1,087 4$1,088

Good Availability

50% of dates checked are available within 10% of the lowest price

Monday, September 14th, 2026

5 round-trip options

Returning

Wed, Sep 23, 2026•9 Day Trip

$1,430 USD

Google Flights

Returning

Thu, Sep 24, 2026•10 Day Trip

$1,282 USD

Google Flights

Returning

Sat, Sep 26, 2026•12 Day Trip

$1,332 USD

Google Flights

Returning

Sun, Sep 27, 2026•13 Day Trip

$1,294 USD

Google Flights

Returning

Mon, Sep 28, 2026•14 Day Trip

$1,280 USD

Google Flights

Porto (OPO) to San Francisco (SFO) flight deal in economy from $734

Francisco Sá Carneiro Airport

San Francisco International Airport

September 2026

Monday, September 14th, 2026