San Francisco (SFO) to Porto (OPO) flight deal in economy from $786

Sunday, September 20th, 2026

10 round-trip options

Returning
Fri, Sep 25, 20265 Day Trip
$1,905 USD
Returning
Sat, Sep 26, 20266 Day Trip
$1,078 USD
Returning
Sun, Sep 27, 20267 Day Trip
$878 USD
Returning
Mon, Sep 28, 20268 Day Trip
$821 USD
Returning
Tue, Sep 29, 20269 Day Trip
$821 USD
Returning
Wed, Sep 30, 202610 Day Trip
$821 USD
Returning
Thu, Oct 1, 202611 Day Trip
$821 USD
Returning
Fri, Oct 2, 202612 Day Trip
$836 USD
Returning
Sat, Oct 3, 202613 Day Trip
$1,020 USD
Returning
Sun, Oct 4, 202614 Day Trip
$1,107 USD