Flights to Porto from $ 375*
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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)02/22/26 - 03/01/26
from
$Â 480
Viewed: 16 hours ago
Roundtrip
Economy
Chicago (ORD)to
Porto (OPO)03/03/26 - 03/10/26
from
$Â 476
Viewed: 4 hours ago
Roundtrip
Economy
Denver (DEN)to
Porto (OPO)03/03/26 - 03/10/26
from
$Â 675
Viewed: 9 hours ago
Roundtrip
Economy
San Francisco (SFO)to
Porto (OPO)03/11/26 - 03/18/26
from
$Â 775
Viewed: 4 hours ago
Roundtrip
Economy
Houston (IAH)to
Porto (OPO)03/03/26 - 03/10/26
from
$Â 675
Viewed: 4 hours ago
Roundtrip
Economy
Washington, D.C. (IAD)to
Porto (OPO)03/03/26 - 03/17/26
from
$Â 476
Viewed: 5 hours ago
Roundtrip
Economy
Los Angeles (LAX)to
Porto (OPO)02/24/26 - 03/10/26
from
$Â 486
Viewed: 5 hours ago
Roundtrip
Economy
Boston (BOS)to
Porto (OPO)02/25/26 - 03/11/26
from
$Â 375
Viewed: 5 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)
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flight_land
$
Newark/New York (EWR)to
Porto (OPO)
07/25/26 - 08/20/26
Roundtrip
Business
from
$Â 2,999
Viewed: 23 hours ago
Chicago (ORD)to
Porto (OPO)
03/04/26 - 03/18/26
Roundtrip
Business
from
$Â 4,964
Viewed: 4 hours ago
Denver (DEN)to
Porto (OPO)
07/04/26 - 07/14/26
Roundtrip
Business
from
$Â 4,759
Viewed: 20 hours ago
San Francisco (SFO)to
Porto (OPO)
07/13/26 - 07/28/26
Roundtrip
Business
from
$Â 5,125
Viewed: 1 day ago
Washington, D.C. (IAD)to
Porto (OPO)
06/29/26 - 07/14/26
Roundtrip
Business
from
$Â 5,184
Viewed: 21 hours ago
Los Angeles (LAX)to
Porto (OPO)
03/30/26 - 04/15/26
Roundtrip
Business
from
$Â 4,243
Viewed: 20 hours ago
Houston (IAH)to
Porto (OPO)
03/19/26 - 04/09/26
Roundtrip
Business
from
$Â 4,883
Viewed: 22 hours ago
Boston (BOS)to
Porto (OPO)
06/28/26 - 07/09/26
Roundtrip
Business
from
$Â 3,198
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.
