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

Sunday, August 2nd, 2026

7 round-trip options

Returning
Fri, Aug 7, 20265 Day Trip
$1,469 USD
Returning
Sun, Aug 9, 20267 Day Trip
$1,339 USD
Returning
Mon, Aug 10, 20268 Day Trip
$1,163 USD
Returning
Tue, Aug 11, 20269 Day Trip
$1,045 USD
Returning
Wed, Aug 12, 202610 Day Trip
$984 USD
Returning
Sat, Aug 15, 202613 Day Trip
$1,255 USD
Returning
Sun, Aug 16, 202614 Day Trip
$1,255 USD