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

Sunday, December 13th, 2026

7 round-trip options

Returning
Fri, Dec 18, 2026•5 Day Trip
$1,421 USD
Google Flights
Returning
Sat, Dec 19, 2026•6 Day Trip
$1,290 USD
Google Flights
Returning
Mon, Dec 21, 2026•8 Day Trip
$1,005 USD
Google Flights
Returning
Wed, Dec 23, 2026•10 Day Trip
$868 USD
Google Flights
Returning
Thu, Dec 24, 2026•11 Day Trip
$791 USD
Google Flights
Returning
Sat, Dec 26, 2026•13 Day Trip
$782 USD
Google Flights
Returning
Sun, Dec 27, 2026•14 Day Trip
$699 USD
Google Flights