Cheapest return flights from Chicago to Lisbon in August from 835€

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

Return flights

12 Aug - 18 Aug Frontier Airlines
13 Aug - 20 Aug Delta
13 Aug - 19 Aug Delta
14 Aug - 21 Aug Air France
19 Aug - 26 Aug Porter Airlines (Canada) Ltd
16 Aug - 23 Aug Porter Airlines (Canada) Ltd
02 Aug - 09 Aug Porter Airlines (Canada) Ltd
02 Aug - 07 Aug Porter Airlines (Canada) Ltd
02 Aug - 08 Aug Porter Airlines (Canada) Ltd
15 Aug - 22 Aug Delta
26 Aug - 24 Sep Porter Airlines (Canada) Ltd

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

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