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

Friday, December 25th, 2026

7 round-trip options

Returning
Wed, Dec 30, 2026•5 Day Trip
$808 USD
Google Flights
Returning
Thu, Dec 31, 2026•6 Day Trip
$742 USD
Google Flights
Returning
Sat, Jan 2, 2027•8 Day Trip
$812 USD
Google Flights
Returning
Mon, Jan 4, 2027•10 Day Trip
$821 USD
Google Flights
Returning
Tue, Jan 5, 2027•11 Day Trip
$816 USD
Google Flights
Returning
Thu, Jan 7, 2027•13 Day Trip
$798 USD
Google Flights
Returning
Fri, Jan 8, 2027•14 Day Trip
$812 USD
Google Flights