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, December 8th, 2026

7 round-trip options

Returning
Sun, Dec 13, 2026•5 Day Trip
$747 USD
Google Flights
Returning
Mon, Dec 14, 2026•6 Day Trip
$761 USD
Google Flights
Returning
Wed, Dec 16, 2026•8 Day Trip
$991 USD
Google Flights
Returning
Fri, Dec 18, 2026•10 Day Trip
$1,285 USD
Google Flights
Returning
Sat, Dec 19, 2026•11 Day Trip
$1,178 USD
Google Flights
Returning
Mon, Dec 21, 2026•13 Day Trip
$1,014 USD
Google Flights
Returning
Tue, Dec 22, 2026•14 Day Trip
$1,018 USD
Google Flights