Flights from Chicago to to Portugal from $ 451*
expand_more
1 Passenger, Economy
expand_morePromotion Code
expand_moreexpand_more
today
today
Find United's best fares from Chicago to to Portugal
flight_takeoff
flight_land
$
Chicago (ORD)to
Lisbon (LIS)03/01/26 - 03/12/26from$Â 451Viewed: 1 day agoRoundtripEconomy
Chicago (ORD)to
Porto (OPO)03/04/26 - 03/18/26from$Â 474Viewed: 21 hours agoRoundtripEconomy
*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 flights from Chicago to to Portugal
flight_takeoff
flight_land
$
Chicago (ORD)to
Lisbon (LIS)
01/04/26 - 01/08/26
Roundtrip
Business
from
$Â 2,967
Viewed: 1 day ago
Chicago (ORD)to
Porto (OPO)
04/03/26 - 04/07/26
Roundtrip
Business
from
$Â 3,752
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.