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

Monday, November 30th, 2026

7 round-trip options

Returning
Sat, Dec 5, 2026•5 Day Trip
$829 USD
Google Flights
Returning
Sun, Dec 6, 2026•6 Day Trip
$778 USD
Google Flights
Returning
Tue, Dec 8, 2026•8 Day Trip
$710 USD
Google Flights
Returning
Thu, Dec 10, 2026•10 Day Trip
$747 USD
Google Flights
Returning
Fri, Dec 11, 2026•11 Day Trip
$820 USD
Google Flights
Returning
Sun, Dec 13, 2026•13 Day Trip
$747 USD
Google Flights
Returning
Mon, Dec 14, 2026•14 Day Trip
$735 USD
Google Flights