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

Return flights

03 Mar - 10 Mar	Virgin Atlantic
04 Mar - 11 Mar	Delta
11 Mar - 18 Mar	Delta
02 Mar - 09 Mar	Delta
09 Mar - 16 Mar	Delta
04 Mar - 14 Mar	Delta
01 Mar - 08 Mar	Delta
05 Mar - 12 Mar	Delta
19 Mar - 26 Mar	Delta
24 Mar - 31 Mar	Delta
29 Mar - 03 Apr	Porter Airlines (Canada) Ltd
29 Mar - 05 Apr	Frontier Airlines
25 Mar - 01 Apr	Virgin Atlantic
26 Mar - 04 Apr	Frontier Airlines
28 Mar - 02 Apr	Porter Airlines (Canada) Ltd
26 Mar - 02 Apr	Frontier Airlines
28 Mar - 04 Apr	Frontier 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 $460

Return flights