American AirlinesAAAmerican Airlines
One Way•Economy
United StatesORD

O'Hare International Airport

Chicago, United States
PortugalLIS

Portela Airport

Lisbon, Portugal
$551 USD
-36%$352 USD
Verified Apr 6, 2026 at 3:47 AM
Limited Availability
18% of dates checked are available within 10% of the lowest price

Sunday, May 31st, 2026

Outbound Flights

·
→
·
→
·
→
Google Flights