Porto (OPO) to San Francisco (SFO) flight deal in economy from $669

Air CanadaACAir CanadaLufthansaLHLufthansaSwiss International Air LinesLXSwiss International Air LinesAustrian AirlinesOSAustrian AirlinesUnited AirlinesUAUnited Airlines
Round Trip•Economy
PortugalOPO

Francisco Sá Carneiro Airport

Porto, Portugal
United StatesSFO

San Francisco International Airport

San Francisco, United States
$871 USD
-23%$669 USD
Verified about 12 hours ago
Limited Availability
16% of dates checked are available within 10% of the lowest price

Monday, November 2nd, 2026

7 round-trip options

Returning
Sat, Nov 7, 2026•5 Day Trip
$817 USD
Google Flights
Returning
Sun, Nov 8, 2026•6 Day Trip
$783 USD
Google Flights
Returning
Tue, Nov 10, 2026•8 Day Trip
$784 USD
Google Flights
Returning
Thu, Nov 12, 2026•10 Day Trip
$797 USD
Google Flights
Returning
Fri, Nov 13, 2026•11 Day Trip
$777 USD
Google Flights
Returning
Sun, Nov 15, 2026•13 Day Trip
$801 USD
Google Flights
Returning
Mon, Nov 16, 2026•14 Day Trip
$797 USD
Google Flights