AirHint found the following cheapest return flights from Chicago (ORD) to Split (SPU) in August 2025 (see full year).

Return flights

18 Aug - 02 Sep	Turkish Airlines
18 Aug - 17 Sep	TAP
17 Aug - 31 Aug	Lufthansa
15 Aug - 18 Aug	Austrian Airlines
12 Aug - 19 Aug	Lufthansa
29 Aug - 11 Sep	Turkish Airlines
29 Aug - 07 Sep	Turkish Airlines
06 Aug - 23 Aug	SWISS
28 Aug - 06 Sep	Turkish Airlines
29 Aug - 06 Sep	Turkish Airlines
04 Aug - 17 Aug	Icelandair
05 Aug - 17 Aug	SWISS
16 Aug - 23 Aug	Lufthansa
27 Aug - 06 Sep	Lufthansa

Also check the deals for one-way flights from Chicago to Split in August.

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 Split in August from 469€

Return flights