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

Tuesday, September 22nd, 2026

4 round-trip options

Returning
Tue, Sep 29, 20267 Day Trip
$760 USD
Returning
Sun, Oct 4, 202612 Day Trip
$684 USD
Returning
Mon, Oct 5, 202613 Day Trip
$770 USD
Returning
Tue, Oct 6, 202614 Day Trip
$781 USD