Flights from United States to to Portugal from $ 375*
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1 Passenger, Economy
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today
today
Best prices for United flights from United States to Portugal
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*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.
Best business class fares from United States to to Portugal
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Newark/New York (EWR)to
Lisbon (LIS)
03/17/26 - 03/25/26
Roundtrip
Business
from
$Â 4,196
Viewed: 23 hours ago
San Francisco (SFO)to
Lisbon (LIS)
05/20/26 - 05/29/26
Roundtrip
Business
from
$Â 4,199
Viewed: 6 hours ago
Washington, D.C. (IAD)to
Lisbon (LIS)
03/03/26 - 03/25/26
Roundtrip
Business
from
$Â 6,381
Viewed: 1 hour ago
Houston (IAH)to
Lisbon (LIS)
06/02/26 - 06/30/26
Roundtrip
Business
from
$Â 5,137
Viewed: 20 hours ago
Newark/New York (EWR)to
Porto (OPO)
08/21/26 - 09/06/26
Roundtrip
Business
from
$Â 3,099
Viewed: 8 hours ago
Chicago (ORD)to
Lisbon (LIS)
04/29/26 - 05/06/26
Roundtrip
Business
from
$Â 4,193
Viewed: 21 hours ago
Denver (DEN)to
Lisbon (LIS)
05/01/26 - 05/21/26
Roundtrip
Business
from
$Â 4,887
Viewed: 18 hours ago
Los Angeles (LAX)to
Lisbon (LIS)
04/01/26 - 04/16/26
Roundtrip
Business
from
$Â 4,538
Viewed: 21 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.