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 14 hours ago
Limited Availability
16% of dates checked are available within 10% of the lowest price

Saturday, November 21st, 2026

7 round-trip options

Returning
Thu, Nov 26, 2026•5 Day Trip
$703 USD
Google Flights
Returning
Fri, Nov 27, 2026•6 Day Trip
$681 USD
Google Flights
Returning
Sun, Nov 29, 2026•8 Day Trip
$788 USD
Google Flights
Returning
Tue, Dec 1, 2026•10 Day Trip
$857 USD
Google Flights
Returning
Wed, Dec 2, 2026•11 Day Trip
$852 USD
Google Flights
Returning
Fri, Dec 4, 2026•13 Day Trip
$698 USD
Google Flights
Returning
Sat, Dec 5, 2026•14 Day Trip
$778 USD
Google Flights