Porto (OPO) to Boston (BOS) flight deal in economy from $516
$790 USD
-35%$516 USD
Verified 13 days agoSeptember 2026
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Extremely Rare Availability
4% of dates checked are available within 10% of the lowest price
Monday, September 7th, 2026
8 round-trip options
Returning
Sat, Sep 12, 2026•5 Day Trip
$944 USD
Returning
Sun, Sep 13, 2026•6 Day Trip
$820 USD
Returning
Tue, Sep 15, 2026•8 Day Trip
$856 USD
Returning
Wed, Sep 16, 2026•9 Day Trip
$797 USD
Returning
Thu, Sep 17, 2026•10 Day Trip
$832 USD
Returning
Fri, Sep 18, 2026•11 Day Trip
$832 USD
Returning
Sun, Sep 20, 2026•13 Day Trip
$820 USD
Returning
Mon, Sep 21, 2026•14 Day Trip
$856 USD