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

Wednesday, November 25th, 2026

7 round-trip options

Returning
Mon, Nov 30, 2026•5 Day Trip
$719 USD
Google Flights
Returning
Tue, Dec 1, 2026•6 Day Trip
$724 USD
Google Flights
Returning
Thu, Dec 3, 2026•8 Day Trip
$690 USD
Google Flights
Returning
Sat, Dec 5, 2026•10 Day Trip
$850 USD
Google Flights
Returning
Sun, Dec 6, 2026•11 Day Trip
$850 USD
Google Flights
Returning
Tue, Dec 8, 2026•13 Day Trip
$704 USD
Google Flights
Returning
Wed, Dec 9, 2026•14 Day Trip
$696 USD
Google Flights