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

Tuesday, December 29th, 2026

7 round-trip options

Returning
Sun, Jan 3, 2027•5 Day Trip
$863 USD
Google Flights
Returning
Mon, Jan 4, 2027•6 Day Trip
$863 USD
Google Flights
Returning
Wed, Jan 6, 2027•8 Day Trip
$863 USD
Google Flights
Returning
Fri, Jan 8, 2027•10 Day Trip
$703 USD
Google Flights
Returning
Sat, Jan 9, 2027•11 Day Trip
$698 USD
Google Flights
Returning
Mon, Jan 11, 2027•13 Day Trip
$714 USD
Google Flights
Returning
Tue, Jan 12, 2027•14 Day Trip
$735 USD
Google Flights