Lisbon (LIS) to Boston (BOS) flight deal in economy from $512
$738 USD
-31%$512 USD
Verified 1 day agoDecember 2026
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Fair Availability
24% of dates checked are available within 10% of the lowest price
Tuesday, December 29th, 2026
2 round-trip options
Returning
Wed, Jan 6, 2027•8 Day Trip
$651 USD
Returning
Tue, Jan 12, 2027•14 Day Trip
$651 USD
