Flights to Porto from $ 706*
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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)04/21/26 - 04/28/26
from
$Â 800
Viewed: 12 hours ago
Roundtrip
Economy
Chicago (ORD)to
Porto (OPO)11/19/26 - 11/27/26
from
$Â 759
Viewed: 1 day ago
Roundtrip
Economy
Houston (IAH)to
Porto (OPO)04/17/26 - 04/24/26
from
$Â 782
Viewed: 58 minutes ago
Roundtrip
Economy
San Francisco (SFO)to
Porto (OPO)04/21/26 - 04/28/26
from
$Â 751
Viewed: 1 hour ago
Roundtrip
Economy
Washington, D.C. (IAD)to
Porto (OPO)04/15/26 - 04/29/26
from
$Â 794
Viewed: 1 day ago
Roundtrip
Economy
Denver (DEN)to
Porto (OPO)04/15/26 - 04/22/26
from
$Â 731
Viewed: 1 day ago
Roundtrip
Economy
Los Angeles (LAX)to
Porto (OPO)04/21/26 - 04/28/26
from
$Â 751
Viewed: 1 hour ago
Roundtrip
Economy
Boston (BOS)to
Porto (OPO)04/08/26 - 04/15/26
from
$Â 706
Viewed: 1 day 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 - 04/08/26
Roundtrip
Business
from
$Â 3,641
Viewed: 1 day ago
Houston (IAH)to
Porto (OPO)
07/15/26 - 07/22/26
Roundtrip
Business
from
$Â 5,039
Viewed: 3 hours ago
San Francisco (SFO)to
Porto (OPO)
08/03/26 - 09/04/26
Roundtrip
Business
from
$Â 5,578
Viewed: 20 hours ago
Chicago (ORD)to
Porto (OPO)
09/07/26 - 09/22/26
Roundtrip
Business
from
$Â 5,770
Viewed: 3 hours ago
Washington, D.C. (IAD)to
Porto (OPO)
07/15/26 - 08/18/26
Roundtrip
Business
from
$Â 4,414
Viewed: 20 hours ago
Denver (DEN)to
Porto (OPO)
07/01/26 - 08/20/26
Roundtrip
Business
from
$Â 4,962
Viewed: 1 day ago
Boston (BOS)to
Porto (OPO)
04/01/26 - 04/11/26
Roundtrip
Business
from
$Â 3,651
Viewed: 1 day ago
Los Angeles (LAX)to
Porto (OPO)
07/14/26 - 07/28/26
Roundtrip
Business
from
$Â 5,377
Viewed: 16 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.
