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

Tuesday, September 1st, 2026

4 round-trip options

Returning
Tue, Sep 8, 20267 Day Trip
$766 USD
Returning
Sun, Sep 13, 202612 Day Trip
$786 USD
Returning
Mon, Sep 14, 202613 Day Trip
$770 USD
Returning
Tue, Sep 15, 202614 Day Trip
$770 USD