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

Monday, September 14th, 2026

4 round-trip options

Returning
Mon, Sep 21, 20267 Day Trip
$787 USD
Returning
Sat, Sep 26, 202612 Day Trip
$786 USD
Returning
Sun, Sep 27, 202613 Day Trip
$787 USD
Returning
Mon, Sep 28, 202614 Day Trip
$777 USD