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

Sunday, December 27th, 2026

7 round-trip options

Returning
Fri, Jan 1, 2027•5 Day Trip
$934 USD
Google Flights
Returning
Sat, Jan 2, 2027•6 Day Trip
$866 USD
Google Flights
Returning
Mon, Jan 4, 2027•8 Day Trip
$863 USD
Google Flights
Returning
Wed, Jan 6, 2027•10 Day Trip
$805 USD
Google Flights
Returning
Thu, Jan 7, 2027•11 Day Trip
$801 USD
Google Flights
Returning
Sat, Jan 9, 2027•13 Day Trip
$806 USD
Google Flights
Returning
Sun, Jan 10, 2027•14 Day Trip
$821 USD
Google Flights