Cheapest return flights from Chicago to Lisbon in April from $557

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

Return flights

21 Apr - 29 Apr Delta
14 Apr - 21 Apr Delta
15 Apr - 22 Apr Delta
05 Apr - 12 Apr Delta
13 Apr - 20 Apr Delta
25 Apr - 02 May Porter Airlines (Canada) Ltd
17 Apr - 27 Apr Delta
10 Apr - 17 Apr Delta
23 Apr - 27 Apr Delta
22 Apr - 26 Apr Air Transat
12 Apr - 19 Apr Delta
25 Apr - 10 May Delta

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

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