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

Return flights

11 Mar - 22 Mar	Icelandair
16 Mar - 23 Mar	Lufthansa
15 Mar - 22 Mar	Scandinavian Airlines
23 Mar - 30 Mar	SWISS
05 Mar - 12 Mar	SWISS
03 Mar - 28 Mar	Iberia
04 Mar - 28 Mar	Iberia
06 Mar - 13 Mar	Air France
25 Mar - 29 Mar	Icelandair
25 Mar - 01 Apr	Air Canada
14 Mar - 23 Mar	Scandinavian Airlines
15 Mar - 04 Apr	Lufthansa
19 Mar - 11 Apr	Lufthansa
29 Mar - 18 Apr	Lufthansa
29 Mar - 04 Apr	Turkish Airlines
27 Mar - 05 Apr	Turkish Airlines
28 Mar - 18 Apr	Lufthansa
25 Mar - 01 Apr	TAP	direct
15 Mar - 04 Apr	TAP	direct
27 Mar - 05 Apr	TAP	direct

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 $468

Return flights