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, January 21st, 2027

4 round-trip options

Returning
Wed, Jan 27, 2027•6 Day Trip
$674 USD
Google Flights
Returning
Thu, Jan 28, 2027•7 Day Trip
$674 USD
Google Flights
Returning
Fri, Jan 29, 2027•8 Day Trip
$674 USD
Google Flights
Returning
Sat, Jan 30, 2027•9 Day Trip
$675 USD
Google Flights