Cheapest return flights from Chicago to Lisbon in August from $936

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

Return flights

10 Aug - 20 Aug Delta
11 Aug - 20 Aug Delta
12 Aug - 21 Aug Delta
11 Aug - 19 Aug Delta
10 Aug - 19 Aug Delta
12 Aug - 19 Aug Delta
24 Aug - 30 Aug Delta
05 Aug - 12 Aug Porter Airlines (Canada) Ltd
08 Aug - 15 Aug Delta
11 Aug - 18 Aug Porter Airlines (Canada) Ltd

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

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