Flights from Boston to to Portugal from $ 375*
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1 Passenger, Economy
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today
today
Find United's best fares from Boston to to Portugal
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Boston (BOS)to
Lisbon (LIS)03/03/26 - 03/17/26from$Â 705Viewed: 11 hours agoRoundtripEconomy
Boston (BOS)to
Porto (OPO)02/25/26 - 03/11/26from$Â 375Viewed: 22 hours agoRoundtripEconomy
Boston (BOS)to
Ponta Delgada (PDL)02/24/26 - 03/10/26from$Â 718Viewed: 21 hours agoRoundtripEconomy
*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.
Business class flights from Boston to to Portugal
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flight_land
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Boston (BOS)to
Lisbon (LIS)
12/30/25 - 01/13/26
Roundtrip
Business
from
$Â 3,057
Viewed: 1 day ago
Boston (BOS)to
Porto (OPO)
10/09/26 - 10/13/26
Roundtrip
Business
from
$Â 3,191
Viewed: 1 day ago
Boston (BOS)to
Ponta Delgada (PDL)
01/30/26 - 02/01/26
Roundtrip
Business
from
$Â 7,387
Viewed: 10 hours ago
*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.