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

Thursday, December 24th, 2026

7 round-trip options

Returning
Tue, Dec 29, 2026•5 Day Trip
$694 USD
Google Flights
Returning
Wed, Dec 30, 2026•6 Day Trip
$702 USD
Google Flights
Returning
Fri, Jan 1, 2027•8 Day Trip
$702 USD
Google Flights
Returning
Sun, Jan 3, 2027•10 Day Trip
$770 USD
Google Flights
Returning
Mon, Jan 4, 2027•11 Day Trip
$738 USD
Google Flights
Returning
Wed, Jan 6, 2027•13 Day Trip
$692 USD
Google Flights
Returning
Thu, Jan 7, 2027•14 Day Trip
$692 USD
Google Flights