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

Tuesday, September 15th, 2026

4 round-trip options

Returning
Tue, Sep 22, 20267 Day Trip
$781 USD
Returning
Sun, Sep 27, 202612 Day Trip
$781 USD
Returning
Mon, Sep 28, 202613 Day Trip
$760 USD
Returning
Tue, Sep 29, 202614 Day Trip
$760 USD