Lisbon (LIS) to Boston (BOS) flight deal in economy from $512

Friday, September 4th, 2026

4 round-trip options

Returning
Fri, Sep 11, 20267 Day Trip
$781 USD
Returning
Wed, Sep 16, 202612 Day Trip
$753 USD
Returning
Thu, Sep 17, 202613 Day Trip
$770 USD
Returning
Fri, Sep 18, 202614 Day Trip
$781 USD