Flights to Porto from $ 835*
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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)07/14/26 - 07/21/26
from
$ 855
Viewed: 45 minutes ago
Roundtrip
Economy
Chicago (ORD)to
Porto (OPO)08/18/26 - 08/25/26
from
$ 949
Viewed: 13 hours ago
Roundtrip
Economy
Houston (IAH)to
Porto (OPO)08/19/26 - 08/26/26
from
$ 866
Viewed: 13 hours ago
Roundtrip
Economy
San Francisco (SFO)to
Porto (OPO)08/12/26 - 08/26/26
from
$ 835
Viewed: 13 hours ago
Roundtrip
Economy
Los Angeles (LAX)to
Porto (OPO)08/19/26 - 08/26/26
from
$ 851
Viewed: 13 hours ago
Roundtrip
Economy
Washington, D.C. (IAD)to
Porto (OPO)08/11/26 - 08/25/26
from
$ 851
Viewed: 13 hours ago
Roundtrip
Economy
Denver (DEN)to
Porto (OPO)08/19/26 - 08/26/26
from
$ 865
Viewed: 17 hours ago
Roundtrip
Economy
Boston (BOS)to
Porto (OPO)02/01/27 - 02/15/27
from
$ 878
Viewed: 16 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)
07/21/26 - 08/12/26
Roundtrip
Business
from
$ 4,043
Viewed: 1 day ago
Chicago (ORD)to
Porto (OPO)
07/29/26 - 08/09/26
Roundtrip
Business
from
$ 5,296
Viewed: 23 hours ago
Houston (IAH)to
Porto (OPO)
08/18/26 - 08/26/26
Roundtrip
Business
from
$ 5,058
Viewed: 21 hours ago
San Francisco (SFO)to
Porto (OPO)
10/16/26 - 10/23/26
Roundtrip
Business
from
$ 6,940
Viewed: 17 hours ago
Los Angeles (LAX)to
Porto (OPO)
08/03/26 - 08/13/26
Roundtrip
Business
from
$ 4,046
Viewed: 12 hours ago
Washington, D.C. (IAD)to
Porto (OPO)
08/09/26 - 08/18/26
Roundtrip
Business
from
$ 5,572
Viewed: 15 hours ago
Denver (DEN)to
Porto (OPO)
07/15/26 - 07/22/26
Roundtrip
Business
from
$ 5,046
Viewed: 13 hours ago
Boston (BOS)to
Porto (OPO)
07/22/26 - 07/27/26
Roundtrip
Business
from
$ 4,303
Viewed: 3 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.
