Flights to Porto from $ 375*
expand_more
1 Passenger, Economy
expand_morePromotion Code
expand_moreexpand_more
today
today
United's most popular flights to Porto (OPO)
flight_takeoff
flight_land
$
Newark/New York (EWR)to
Porto (OPO)02/21/26 - 02/28/26
from
$Â 480
Viewed: 10 hours ago
Roundtrip
Economy
San Francisco (SFO)to
Porto (OPO)02/24/26 - 03/10/26
from
$Â 773
Viewed: 22 hours ago
Roundtrip
Economy
Chicago (ORD)to
Porto (OPO)03/03/26 - 03/10/26
from
$Â 474
Viewed: 21 hours ago
Roundtrip
Economy
Denver (DEN)to
Porto (OPO)02/26/26 - 03/04/26
from
$Â 623
Viewed: 1 day ago
Roundtrip
Economy
Los Angeles (LAX)to
Porto (OPO)03/24/26 - 04/01/26
from
$Â 460
Viewed: 1 day ago
Roundtrip
Economy
Washington, D.C. (IAD)to
Porto (OPO)02/25/26 - 03/11/26
from
$Â 474
Viewed: 22 hours ago
Roundtrip
Economy
Boston (BOS)to
Porto (OPO)02/24/26 - 03/10/26
from
$Â 375
Viewed: 21 hours ago
Roundtrip
Economy
Houston (IAH)to
Porto (OPO)03/03/26 - 03/17/26
from
$Â 673
Viewed: 22 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)
07/11/26 - 07/20/26
Roundtrip
Business
from
$Â 2,999
Viewed: 16 hours ago
San Francisco (SFO)to
Porto (OPO)
04/07/26 - 04/14/26
Roundtrip
Business
from
$Â 4,427
Viewed: 6 hours ago
Chicago (ORD)to
Porto (OPO)
04/03/26 - 04/07/26
Roundtrip
Business
from
$Â 3,752
Viewed: 1 day ago
Denver (DEN)to
Porto (OPO)
02/26/26 - 03/04/26
Roundtrip
Business
from
$Â 4,520
Viewed: 1 day ago
Los Angeles (LAX)to
Porto (OPO)
07/22/26 - 07/29/26
Roundtrip
Business
from
$Â 3,432
Viewed: 13 hours ago
Washington, D.C. (IAD)to
Porto (OPO)
01/21/26 - 01/26/26
Roundtrip
Business
from
$Â 3,979
Viewed: 1 day ago
Boston (BOS)to
Porto (OPO)
01/14/26 - 01/20/26
Roundtrip
Business
from
$Â 3,230
Viewed: 1 day ago
Houston (IAH)to
Porto (OPO)
01/04/26 - 01/08/26
Roundtrip
Business
from
$Â 3,342
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.
