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

Thursday, December 3rd, 2026

7 round-trip options

Returning
Tue, Dec 8, 2026•5 Day Trip
$702 USD
Google Flights
Returning
Wed, Dec 9, 2026•6 Day Trip
$688 USD
Google Flights
Returning
Fri, Dec 11, 2026•8 Day Trip
$765 USD
Google Flights
Returning
Sun, Dec 13, 2026•10 Day Trip
$783 USD
Google Flights
Returning
Mon, Dec 14, 2026•11 Day Trip
$771 USD
Google Flights
Returning
Wed, Dec 16, 2026•13 Day Trip
$997 USD
Google Flights
Returning
Thu, Dec 17, 2026•14 Day Trip
$1,030 USD
Google Flights