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

Monday, January 18th, 2027

4 round-trip options

Returning
Sun, Jan 24, 2027•6 Day Trip
$691 USD
Google Flights
Returning
Mon, Jan 25, 2027•7 Day Trip
$692 USD
Google Flights
Returning
Tue, Jan 26, 2027•8 Day Trip
$695 USD
Google Flights
Returning
Wed, Jan 27, 2027•9 Day Trip
$686 USD
Google Flights