AirHint found the following cheapest return flights from Chicago (ORD) to Lisbon (LIS) in January 2026 (see full year).

Return flights

07 Jan - 11 Jan	Icelandair
21 Jan - 25 Jan	Icelandair
14 Jan - 25 Jan	Icelandair
21 Jan - 08 Feb	Icelandair
19 Jan - 06 Feb	British Airways
21 Jan - 26 Jan	British Airways
04 Jan - 14 Jan	Finnair
16 Jan - 27 Jan	Iberia
15 Jan - 20 Jan	Iberia
12 Jan - 18 Jan	British Airways
30 Jan - 20 Feb	Iberia
13 Jan - 07 Feb	British Airways
14 Jan - 07 Feb	British Airways
12 Jan - 07 Feb	British Airways
14 Jan - 21 Jan	TAP	direct
16 Jan - 21 Jan	TAP	direct
21 Jan - 08 Feb	TAP	direct
30 Jan - 20 Feb	TAP	direct
30 Jan - 11 Feb	TAP	direct
22 Jan - 14 Feb	United

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

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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Cheapest return flights from Chicago to Lisbon in January from 314€

Return flights