Flights to Porto from $ 636*
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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)04/29/26 - 05/06/26
from
$ 825
Viewed: 7 hours ago
Roundtrip
Economy
Chicago (ORD)to
Porto (OPO)10/12/26 - 10/21/26
from
$ 904
Viewed: 1 day ago
Roundtrip
Economy
Denver (DEN)to
Porto (OPO)09/21/26 - 10/08/26
from
$ 837
Viewed: 22 hours ago
Roundtrip
Economy
San Francisco (SFO)to
Porto (OPO)10/14/26 - 11/17/26
from
$ 845
Viewed: 14 hours ago
Roundtrip
Economy
Los Angeles (LAX)to
Porto (OPO)09/12/26 - 09/22/26
from
$ 894
Viewed: 10 hours ago
Roundtrip
Economy
Houston (IAH)to
Porto (OPO)09/15/26 - 09/20/26
from
$ 1,025
Viewed: 1 hour ago
Roundtrip
Economy
Washington, D.C. (IAD)to
Porto (OPO)04/29/26 - 05/06/26
from
$ 876
Viewed: 20 hours ago
Roundtrip
Economy
Boston (BOS)to
Porto (OPO)04/08/26 - 04/15/26
from
$ 636
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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flight_land
$
Newark/New York (EWR)to
Porto (OPO)
08/18/26 - 09/08/26
Roundtrip
Business
from
$ 4,837
Viewed: 1 day ago
Chicago (ORD)to
Porto (OPO)
12/16/26 - 12/30/26
Roundtrip
Business
from
$ 5,093
Viewed: 17 hours ago
Denver (DEN)to
Porto (OPO)
08/12/26 - 08/23/26
Roundtrip
Business
from
$ 5,508
Viewed: 11 hours ago
Houston (IAH)to
Porto (OPO)
07/05/26 - 07/16/26
Roundtrip
Business
from
$ 6,676
Viewed: 17 hours ago
San Francisco (SFO)to
Porto (OPO)
10/14/26 - 11/17/26
Roundtrip
Business
from
$ 5,340
Viewed: 14 hours ago
Los Angeles (LAX)to
Porto (OPO)
07/04/26 - 07/21/26
Roundtrip
Business
from
$ 4,583
Viewed: 18 hours ago
Washington, D.C. (IAD)to
Porto (OPO)
08/17/26 - 08/24/26
Roundtrip
Business
from
$ 5,118
Viewed: 4 hours ago
Boston (BOS)to
Porto (OPO)
08/05/26 - 08/19/26
Roundtrip
Business
from
$ 4,023
Viewed: 1 day 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.
