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

Thursday, September 10th, 2026

4 round-trip options

Returning
Thu, Sep 17, 20267 Day Trip
$781 USD
Returning
Tue, Sep 22, 202612 Day Trip
$770 USD
Returning
Wed, Sep 23, 202613 Day Trip
$770 USD
Returning
Thu, Sep 24, 202614 Day Trip
$781 USD