Cheapest return flights from Chicago to Lisbon in December from 411€

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

Return flights

09 Dec - 16 Dec United
15 Dec - 23 Dec United
25 Dec - 05 Jan Scandinavian Airlines
19 Dec - 26 Dec TAP direct
19 Dec - 31 Dec TAP direct
20 Dec - 10 Jan Air Canada
18 Dec - 30 Dec SWISS
24 Dec - 04 Jan TAP direct
20 Dec - 02 Jan Air Canada

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

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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.

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