Flights to Porto from $ 376*
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1 Passenger, Economy
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today
today
United's most popular flights to Porto (OPO)
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flight_land
$
Newark/New York (EWR)to
Porto (OPO)02/26/26 - 03/02/26
from
$Â 481
Viewed: 20 hours ago
Roundtrip
Economy
Denver (DEN)to
Porto (OPO)02/24/26 - 03/03/26
from
$Â 446
Viewed: 13 hours ago
Roundtrip
Economy
Houston (IAH)to
Porto (OPO)02/24/26 - 03/10/26
from
$Â 446
Viewed: 9 hours ago
Roundtrip
Economy
San Francisco (SFO)to
Porto (OPO)03/17/26 - 03/31/26
from
$Â 676
Viewed: 9 hours ago
Roundtrip
Economy
Washington, D.C. (IAD)to
Porto (OPO)02/25/26 - 03/11/26
from
$Â 482
Viewed: 9 hours ago
Roundtrip
Economy
Chicago (ORD)to
Porto (OPO)03/03/26 - 03/10/26
from
$Â 510
Viewed: 9 hours ago
Roundtrip
Economy
Los Angeles (LAX)to
Porto (OPO)03/03/26 - 03/10/26
from
$Â 446
Viewed: 9 hours ago
Roundtrip
Economy
Boston (BOS)to
Porto (OPO)03/03/26 - 03/10/26
from
$Â 376
Viewed: 9 hours ago
Roundtrip
Economy
*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 deals on flights to Porto (OPO)
flight_takeoff
flight_land
$
Newark/New York (EWR)to
Porto (OPO)
07/07/26 - 09/01/26
Roundtrip
Business
from
$Â 3,100
Viewed: 14 hours ago
Denver (DEN)to
Porto (OPO)
11/25/26 - 12/04/26
Roundtrip
Business
from
$Â 4,422
Viewed: 15 hours ago
Houston (IAH)to
Porto (OPO)
03/15/26 - 03/31/26
Roundtrip
Business
from
$Â 3,977
Viewed: 6 hours ago
San Francisco (SFO)to
Porto (OPO)
08/19/26 - 09/01/26
Roundtrip
Business
from
$Â 4,171
Viewed: 1 day ago
Washington, D.C. (IAD)to
Porto (OPO)
04/01/26 - 04/09/26
Roundtrip
Business
from
$Â 3,665
Viewed: 1 day ago
Chicago (ORD)to
Porto (OPO)
04/07/26 - 04/23/26
Roundtrip
Business
from
$Â 3,484
Viewed: 8 hours ago
Los Angeles (LAX)to
Porto (OPO)
02/05/26 - 02/11/26
Roundtrip
Business
from
$Â 3,848
Viewed: 3 hours ago
Boston (BOS)to
Porto (OPO)
08/10/26 - 08/22/26
Roundtrip
Business
from
$Â 3,298
Viewed: 12 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.
