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

Monday, November 16th, 2026

6 round-trip options

Returning
Sat, Nov 21, 20265 Day Trip
$791 USD
Returning
Mon, Nov 23, 20267 Day Trip
$743 USD
Returning
Tue, Nov 24, 20268 Day Trip
$741 USD
Returning
Fri, Nov 27, 202611 Day Trip
$743 USD
Returning
Sun, Nov 29, 202613 Day Trip
$820 USD
Returning
Mon, Nov 30, 202614 Day Trip
$760 USD