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

Tuesday, November 17th, 2026

7 round-trip options

Returning
Sun, Nov 22, 2026•5 Day Trip
$752 USD
Google Flights
Returning
Mon, Nov 23, 2026•6 Day Trip
$702 USD
Google Flights
Returning
Wed, Nov 25, 2026•8 Day Trip
$695 USD
Google Flights
Returning
Fri, Nov 27, 2026•10 Day Trip
$688 USD
Google Flights
Returning
Sat, Nov 28, 2026•11 Day Trip
$700 USD
Google Flights
Returning
Mon, Nov 30, 2026•13 Day Trip
$789 USD
Google Flights
Returning
Tue, Dec 1, 2026•14 Day Trip
$733 USD
Google Flights