Cheapest return flights from Chicago to Lisbon in September from $517

Best time to book flights for Chicago (ORD) to Lisbon (LIS) flights at AirHint

AirHint found the following cheapest return flights from Chicago (ORD) to Lisbon (LIS) in September 2025 (see full year).

Return flights

15 Sep - 25 Sep TAP direct
15 Sep - 26 Sep TAP direct
03 Sep - 11 Sep Icelandair
27 Sep - 04 Oct TAP direct
25 Sep - 03 Oct TAP direct
15 Sep - 22 Sep TAP direct
25 Sep - 06 Oct Turkish Airlines
23 Sep - 30 Sep Air Canada
17 Sep - 24 Sep Air Canada
17 Sep - 25 Sep Air Canada
22 Sep - 30 Sep Air Canada
29 Sep - 07 Oct Air Canada
30 Sep - 08 Oct Air Canada
23 Sep - 01 Oct Air Canada
21 Sep - 29 Sep Air France
28 Sep - 06 Oct KLM
16 Sep - 24 Sep Air Canada
24 Sep - 02 Oct Air Canada
22 Sep - 27 Oct Finnair
27 Sep - 05 Oct Turkish Airlines

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

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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