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

Saturday, July 25th, 2026

7 round-trip options

Returning
Thu, Jul 30, 20265 Day Trip
$1,466 USD
Returning
Sat, Aug 1, 20267 Day Trip
$1,194 USD
Returning
Sun, Aug 2, 20268 Day Trip
$1,369 USD
Returning
Mon, Aug 3, 20269 Day Trip
$1,135 USD
Returning
Tue, Aug 4, 202610 Day Trip
$1,132 USD
Returning
Fri, Aug 7, 202613 Day Trip
$1,132 USD
Returning
Sat, Aug 8, 202614 Day Trip
$1,369 USD