Flights to Porto from $ 688*
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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)06/23/26 - 06/30/26
from
$ 850
Viewed: 5 hours ago
Roundtrip
Economy
Denver (DEN)to
Porto (OPO)08/18/26 - 09/01/26
from
$ 831
Viewed: 23 hours ago
Roundtrip
Economy
San Francisco (SFO)to
Porto (OPO)08/12/26 - 08/26/26
from
$ 835
Viewed: 18 hours ago
Roundtrip
Economy
Chicago (ORD)to
Porto (OPO)08/18/26 - 08/25/26
from
$ 893
Viewed: 18 hours ago
Roundtrip
Economy
Washington, D.C. (IAD)to
Porto (OPO)08/18/26 - 08/25/26
from
$ 791
Viewed: 18 hours ago
Roundtrip
Economy
Los Angeles (LAX)to
Porto (OPO)08/18/26 - 08/25/26
from
$ 791
Viewed: 18 hours ago
Roundtrip
Economy
Houston (IAH)to
Porto (OPO)08/18/26 - 09/01/26
from
$ 831
Viewed: 18 hours ago
Roundtrip
Economy
Portland, OR (PDX)to
Porto (OPO)08/18/26 - 08/25/26
from
$ 863
Viewed: 21 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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$
Newark/New York (EWR)to
Porto (OPO)
07/21/26 - 07/28/26
Roundtrip
Business
from
$ 4,493
Viewed: 1 day ago
Denver (DEN)to
Porto (OPO)
08/01/26 - 08/31/26
Roundtrip
Business
from
$ 5,772
Viewed: 16 hours ago
San Francisco (SFO)to
Porto (OPO)
08/19/26 - 09/02/26
Roundtrip
Business
from
$ 5,727
Viewed: 11 hours ago
Chicago (ORD)to
Porto (OPO)
10/07/26 - 10/14/26
Roundtrip
Business
from
$ 6,100
Viewed: 22 hours ago
Washington, D.C. (IAD)to
Porto (OPO)
06/26/26 - 07/15/26
Roundtrip
Business
from
$ 5,631
Viewed: 23 hours ago
Los Angeles (LAX)to
Porto (OPO)
07/12/26 - 07/19/26
Roundtrip
Business
from
$ 5,780
Viewed: 19 hours ago
Houston (IAH)to
Porto (OPO)
08/19/26 - 08/24/26
Roundtrip
Business
from
$ 5,740
Viewed: 13 hours ago
Portland, OR (PDX)to
Porto (OPO)
08/11/26 - 08/25/26
Roundtrip
Business
from
$ 4,956
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.
