Cheapest return flights from Chicago to Lisbon in September from 526€

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

Return flights

02 Sep - 11 Sep Turkish Airlines
01 Sep - 30 Sep Turkish Airlines
02 Sep - 30 Sep Turkish Airlines
06 Sep - 16 Sep Turkish Airlines
14 Sep - 21 Sep Turkish Airlines
07 Sep - 14 Sep Turkish Airlines
28 Sep - 05 Oct Turkish Airlines
20 Sep - 02 Oct Iberia
21 Sep - 28 Sep British Airways
03 Sep - 12 Sep Turkish Airlines
02 Sep - 12 Sep Turkish Airlines
22 Sep - 04 Oct Aer Lingus
08 Sep - 22 Sep KLM
15 Sep - 15 Oct Delta
26 Sep - 04 Oct Iberia
26 Sep - 04 Oct TAP direct
20 Sep - 02 Oct TAP direct
29 Sep - 06 Oct TAP

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

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