Cheapest return flights from Chicago to Lisbon in August from $581

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

Return flights

10 Aug - 20 Aug Air France
12 Aug - 20 Aug Aer Lingus
19 Aug - 28 Aug Scandinavian Airlines
02 Aug - 12 Aug Iberia
08 Aug - 22 Aug Air France
19 Aug - 30 Aug Delta
19 Aug - 26 Aug TAP direct
19 Aug - 28 Aug TAP direct
19 Aug - 30 Aug TAP direct
21 Aug - 28 Aug TAP direct
29 Aug - 05 Sep TAP direct

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

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