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)03/08/26 - 03/18/26
from
$Â 482
Viewed: 19 hours ago
Roundtrip
Economy
Houston (IAH)to
Porto (OPO)04/21/26 - 04/28/26
from
$Â 550
Viewed: 14 hours ago
Roundtrip
Economy
Denver (DEN)to
Porto (OPO)03/10/26 - 03/17/26
from
$Â 548
Viewed: 17 hours ago
Roundtrip
Economy
San Francisco (SFO)to
Porto (OPO)04/21/26 - 04/28/26
from
$Â 776
Viewed: 13 hours ago
Roundtrip
Economy
Washington, D.C. (IAD)to
Porto (OPO)04/21/26 - 05/05/26
from
$Â 572
Viewed: 13 hours ago
Roundtrip
Economy
Chicago (ORD)to
Porto (OPO)04/21/26 - 04/28/26
from
$Â 574
Viewed: 13 hours ago
Roundtrip
Economy
Boston (BOS)to
Porto (OPO)02/24/26 - 03/10/26
from
$Â 376
Viewed: 13 hours ago
Roundtrip
Economy
Los Angeles (LAX)to
Porto (OPO)04/21/26 - 04/28/26
from
$Â 489
Viewed: 13 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)
08/02/26 - 08/08/26
Roundtrip
Business
from
$Â 3,554
Viewed: 21 hours ago
Denver (DEN)to
Porto (OPO)
06/01/26 - 06/16/26
Roundtrip
Business
from
$Â 5,225
Viewed: 1 hour ago
Washington, D.C. (IAD)to
Porto (OPO)
09/02/26 - 09/20/26
Roundtrip
Business
from
$Â 5,227
Viewed: 8 hours ago
Houston (IAH)to
Porto (OPO)
04/01/26 - 04/09/26
Roundtrip
Business
from
$Â 4,569
Viewed: 3 hours ago
San Francisco (SFO)to
Porto (OPO)
07/28/26 - 08/06/26
Roundtrip
Business
from
$Â 4,846
Viewed: 3 hours ago
Chicago (ORD)to
Porto (OPO)
07/28/26 - 08/05/26
Roundtrip
Business
from
$Â 5,507
Viewed: 8 hours ago
Los Angeles (LAX)to
Porto (OPO)
03/08/26 - 03/18/26
Roundtrip
Business
from
$Â 4,505
Viewed: 22 hours ago
Boston (BOS)to
Porto (OPO)
10/14/26 - 10/21/26
Roundtrip
Business
from
$Â 4,277
Viewed: 5 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.
