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

Return flights

11 Aug - 24 Aug	Icelandair
11 Aug - 25 Aug	Icelandair
31 Aug - 14 Sep	Scandinavian Airlines
27 Aug - 17 Sep	Icelandair
12 Aug - 26 Aug	Icelandair
26 Aug - 02 Sep	Turkish Airlines
19 Aug - 29 Aug	Icelandair
28 Aug - 25 Sep	Scandinavian Airlines
19 Aug - 26 Aug	United
14 Aug - 01 Sep	Turkish Airlines
19 Aug - 28 Aug	Turkish Airlines
13 Aug - 20 Aug	British Airways
04 Aug - 27 Aug	TAP
14 Aug - 21 Aug	United
18 Aug - 25 Aug	United
30 Aug - 06 Sep	United

Also check the deals for one-way flights from Chicago to Prague 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.

Book a cheap hotel in Prague

Cheap car rent in Prague

Cheapest return flights from Chicago to Prague in August from $507

Return flights