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

Return flights

15 Mar - 22 Mar	Scandinavian Airlines
18 Mar - 29 Mar	Icelandair
22 Mar - 01 Apr	Air Canada
18 Mar - 25 Mar	TAP	direct
20 Mar - 27 Mar	TAP	direct
22 Mar - 01 Apr	TAP	direct
19 Mar - 30 Mar	Air Canada
25 Mar - 04 Apr	TAP	direct
19 Mar - 26 Mar	Air Canada
09 Mar - 16 Mar	United
18 Mar - 29 Mar	TAP	direct
15 Mar - 22 Mar	TAP	direct
19 Mar - 29 Mar	Turkish Airlines
26 Mar - 05 Apr	Turkish Airlines

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 $428

Return flights