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

Return flights

19 Sep - 24 Sep	Copa
26 Sep - 30 Sep	Copa
16 Sep - 24 Sep	Spirit Airlines
02 Sep - 09 Sep	Avianca
17 Sep - 24 Sep	Spirit Airlines
18 Sep - 24 Sep	Spirit Airlines
16 Sep - 22 Sep	Spirit Airlines
17 Sep - 19 Sep	Spirit Airlines
19 Sep - 22 Sep	Spirit Airlines
18 Sep - 19 Sep	Spirit Airlines

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

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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Cheapest return flights from Chicago to Cartagena in September from $290

Return flights