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

Fair Availability
24% of dates checked are available within 10% of the lowest price

Friday, July 31st, 2026

5 round-trip options

Returning
Wed, Aug 5, 20265 Day Trip
$1,362 USD
Returning
Fri, Aug 7, 20267 Day Trip
$1,619 USD
Returning
Sun, Aug 9, 20269 Day Trip
$1,362 USD
Returning
Mon, Aug 10, 202610 Day Trip
$1,362 USD
Returning
Wed, Aug 12, 202612 Day Trip
$1,362 USD