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

Monday, September 28th, 2026

4 round-trip options

Returning
Mon, Oct 5, 20267 Day Trip
$787 USD
Returning
Sat, Oct 10, 202612 Day Trip
$787 USD
Returning
Sun, Oct 11, 202613 Day Trip
$787 USD
Returning
Mon, Oct 12, 202614 Day Trip
$777 USD