Cheapest return flights from Chicago to Lisbon in September from $549

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

Return flights

13 Sep - 18 Sep Scandinavian Airlines
14 Sep - 21 Sep Turkish Airlines
08 Sep - 15 Sep Turkish Airlines
09 Sep - 16 Sep Turkish Airlines
15 Sep - 20 Sep Turkish Airlines
15 Sep - 15 Oct Turkish Airlines
12 Sep - 19 Sep Turkish Airlines
15 Sep - 22 Sep Turkish Airlines
10 Sep - 17 Sep Turkish Airlines
01 Sep - 08 Sep Iberia
02 Sep - 09 Sep Iberia
26 Sep - 09 Oct Air France

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

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