Flights to Porto from $ 416*
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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)04/08/26 - 04/22/26
from
$Â 628
Viewed: 15 hours ago
Roundtrip
Economy
Denver (DEN)to
Porto (OPO)03/10/26 - 03/17/26
from
$Â 648
Viewed: 9 hours ago
Roundtrip
Economy
Chicago (ORD)to
Porto (OPO)04/15/26 - 04/29/26
from
$Â 647
Viewed: 5 hours ago
Roundtrip
Economy
San Francisco (SFO)to
Porto (OPO)04/21/26 - 04/28/26
from
$Â 747
Viewed: 5 hours ago
Roundtrip
Economy
Houston (IAH)to
Porto (OPO)08/02/26 - 10/01/26
from
$Â 611
Viewed: 21 hours ago
Roundtrip
Economy
Washington, D.C. (IAD)to
Porto (OPO)04/14/26 - 04/28/26
from
$Â 598
Viewed: 5 hours ago
Roundtrip
Economy
Los Angeles (LAX)to
Porto (OPO)04/21/26 - 04/28/26
from
$Â 706
Viewed: 5 hours ago
Roundtrip
Economy
Boston (BOS)to
Porto (OPO)03/03/26 - 03/17/26
from
$Â 416
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)
04/03/26 - 04/09/26
Roundtrip
Business
from
$Â 3,668
Viewed: 2 hours ago
Denver (DEN)to
Porto (OPO)
07/28/26 - 08/09/26
Roundtrip
Business
from
$Â 4,691
Viewed: 1 hour ago
Chicago (ORD)to
Porto (OPO)
08/18/26 - 09/01/26
Roundtrip
Business
from
$Â 4,514
Viewed: 22 hours ago
Houston (IAH)to
Porto (OPO)
06/14/26 - 06/24/26
Roundtrip
Business
from
$Â 4,493
Viewed: 30 minutes ago
San Francisco (SFO)to
Porto (OPO)
09/30/26 - 10/14/26
Roundtrip
Business
from
$Â 5,277
Viewed: 23 hours ago
Washington, D.C. (IAD)to
Porto (OPO)
07/29/26 - 08/12/26
Roundtrip
Business
from
$Â 4,369
Viewed: 23 hours ago
Los Angeles (LAX)to
Porto (OPO)
08/01/26 - 08/15/26
Roundtrip
Business
from
$Â 5,051
Viewed: 1 hour ago
Boston (BOS)to
Porto (OPO)
07/20/26 - 07/28/26
Roundtrip
Business
from
$Â 3,798
Viewed: 2 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.
