Flights to Porto from $ 663*
United's most popular flights to Porto (OPO)
flight_takeoff
flight_land
$
Newark/New York (EWR)to
Porto (OPO)07/15/26 - 07/29/26
from
$ 820
Viewed: 12 hours ago
Roundtrip
Economy
Denver (DEN)to
Porto (OPO)08/07/26 - 08/21/26
from
$ 926
Viewed: 7 hours ago
Roundtrip
Economy
Los Angeles (LAX)to
Porto (OPO)08/05/26 - 08/19/26
from
$ 863
Viewed: 2 hours ago
Roundtrip
Economy
San Francisco (SFO)to
Porto (OPO)08/05/26 - 08/19/26
from
$ 847
Viewed: 2 hours ago
Roundtrip
Economy
Houston (IAH)to
Porto (OPO)08/17/26 - 09/05/26
from
$ 891
Viewed: 2 hours ago
Roundtrip
Economy
Chicago (ORD)to
Porto (OPO)10/16/26 - 10/24/26
from
$ 937
Viewed: 4 hours ago
Roundtrip
Economy
Portland, OR (PDX)to
Porto (OPO)07/29/26 - 08/12/26
from
$ 931
Viewed: 4 hours ago
Roundtrip
Economy
Boston (BOS)to
Porto (OPO)05/12/26 - 05/19/26
from
$ 663
Viewed: 2 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)
flight_takeoff
flight_land
$
Newark/New York (EWR)to
Porto (OPO)
08/12/26 - 08/27/26
Roundtrip
Business
from
$ 4,344
Viewed: 4 hours ago
Denver (DEN)to
Porto (OPO)
08/28/26 - 09/12/26
Roundtrip
Business
from
$ 6,234
Viewed: 5 minutes ago
Los Angeles (LAX)to
Porto (OPO)
06/29/26 - 07/10/26
Roundtrip
Business
from
$ 6,121
Viewed: 2 hours ago
Chicago (ORD)to
Porto (OPO)
07/04/26 - 07/16/26
Roundtrip
Business
from
$ 6,511
Viewed: 19 hours ago
San Francisco (SFO)to
Porto (OPO)
07/10/26 - 07/19/26
Roundtrip
Business
from
$ 6,148
Viewed: 5 hours ago
Houston (IAH)to
Porto (OPO)
08/18/26 - 09/06/26
Roundtrip
Business
from
$ 5,863
Viewed: 2 hours ago
Portland, OR (PDX)to
Porto (OPO)
08/04/26 - 08/19/26
Roundtrip
Business
from
$ 5,956
Viewed: 4 hours ago
Boston (BOS)to
Porto (OPO)
07/21/26 - 08/06/26
Roundtrip
Business
from
$ 4,520
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.
