Cheapest return flights from Chicago to Lisbon in September from $533

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

Return flights

04 Sep - 11 Sep Scandinavian Airlines
29 Sep - 06 Oct United
08 Sep - 15 Sep Scandinavian Airlines
17 Sep - 27 Sep Turkish Airlines
17 Sep - 23 Sep Turkish Airlines
03 Sep - 08 Sep Turkish Airlines
21 Sep - 05 Oct Turkish Airlines
28 Sep - 05 Oct Iberia
03 Sep - 10 Sep Turkish Airlines
06 Sep - 20 Sep Turkish Airlines
23 Sep - 07 Oct Turkish Airlines
07 Sep - 14 Sep Turkish Airlines
18 Sep - 30 Sep Turkish Airlines
05 Sep - 26 Oct Turkish Airlines
18 Sep - 25 Sep Finnair
04 Sep - 25 Oct Scandinavian Airlines
04 Sep - 25 Oct TAP direct

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

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