Cheapest return flights from Chicago to Lisbon in December from 385€

AirHint found the following cheapest return flights from Chicago (ORD) to Lisbon (LIS) in December 2025 (see full year).

Return flights

10 Dec - 17 Dec KLM
01 Dec - 08 Dec Air Canada
02 Dec - 09 Dec United
03 Dec - 10 Dec United
03 Dec - 14 Dec Lufthansa
05 Dec - 14 Dec TAP direct
05 Dec - 07 Dec TAP direct
30 Dec - 13 Jan United
06 Dec - 15 Dec British Airways
03 Dec - 07 Dec Icelandair
11 Dec - 15 Dec Iberia
28 Dec - 11 Jan Iberia
28 Dec - 09 Jan Lufthansa
26 Dec - 09 Jan Aer Lingus
28 Dec - 11 Jan TAP direct
23 Dec - 04 Jan Frontier Airlines
24 Dec - 04 Jan TAP
25 Dec - 04 Jan LOT
18 Dec - 04 Jan Spirit Airlines
23 Dec - 02 Jan Frontier Airlines

Also check the deals for one-way flights from Chicago to Lisbon in December.

Powered by

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Feel free to contact us with any feedback or request another flight research.