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

Tuesday, January 5th, 2027

4 round-trip options

Returning
Mon, Jan 11, 2027•6 Day Trip
$900 USD
Google Flights
Returning
Tue, Jan 12, 2027•7 Day Trip
$908 USD
Google Flights
Returning
Wed, Jan 13, 2027•8 Day Trip
$893 USD
Google Flights
Returning
Thu, Jan 14, 2027•9 Day Trip
$895 USD
Google Flights