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

Return flights

04 Mar - 08 Mar	Icelandair
11 Mar - 15 Mar	Icelandair
08 Mar - 17 Mar	Lufthansa
10 Mar - 17 Mar	Lufthansa
04 Mar - 11 Mar	Lufthansa
24 Mar - 31 Mar	Lufthansa
03 Mar - 10 Mar	Lufthansa
11 Mar - 17 Mar	Lufthansa
23 Mar - 31 Mar	Air France
01 Mar - 15 Mar	Scandinavian Airlines
25 Mar - 01 Apr	Lufthansa
22 Mar - 01 Apr	KLM
25 Mar - 02 Apr	Lufthansa
31 Mar - 06 Apr	British Airways
22 Mar - 01 Apr	TAP	direct
29 Mar - 06 Apr	KLM
27 Mar - 19 Apr	Air Canada
26 Mar - 05 Apr	LOT
28 Mar - 03 Apr	LOT
20 Mar - 04 Apr	LOT

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

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 March from $423

Return flights