Cheapest return ORD–LIS flights, August

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

Return flights

25 Aug - 01 Sep Turkish Airlines
26 Aug - 02 Sep Turkish Airlines
27 Aug - 03 Sep Turkish Airlines
12 Aug - 19 Aug Air Canada
24 Aug - 31 Aug Turkish Airlines
16 Aug - 25 Aug Air France
11 Aug - 18 Aug Aer Lingus
20 Aug - 27 Aug Air Canada
19 Aug - 23 Aug KLM
31 Aug - 07 Sep Turkish Airlines
21 Aug - 28 Aug Air Canada
10 Aug - 17 Aug KLM
16 Aug - 29 Aug Delta
05 Aug - 13 Aug Finnair
30 Aug - 06 Sep Air Canada
28 Aug - 04 Sep SWISS
29 Aug - 05 Sep Virgin Atlantic
30 Aug - 04 Sep Turkish Airlines
30 Aug - 06 Sep TAP direct
27 Aug - 03 Sep TAP direct

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

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