San Francisco (SFO) to Porto (OPO) flight deal in economy from $728

Sunday, November 15th, 2026

6 round-trip options

Returning
Fri, Nov 20, 20265 Day Trip
$741 USD
Returning
Sun, Nov 22, 20267 Day Trip
$791 USD
Returning
Mon, Nov 23, 20268 Day Trip
$743 USD
Returning
Thu, Nov 26, 202611 Day Trip
$741 USD
Returning
Sat, Nov 28, 202613 Day Trip
$912 USD
Returning
Sun, Nov 29, 202614 Day Trip
$820 USD