AirHint found the following cheapest return flights from Chicago (ORD) to Madrid (MAD) in August 2026 (see full year).

Return flights

16 Aug - 23 Aug	ITA Airways
05 Aug - 19 Aug	Lufthansa
03 Aug - 19 Aug	Air Canada
05 Aug - 19 Aug	Finnair	direct
03 Aug - 19 Aug	Finnair	direct
16 Aug - 23 Aug	Finnair	direct
01 Aug - 08 Aug	TAP
05 Aug - 16 Aug	SWISS
05 Aug - 16 Aug	British Airways	direct
01 Aug - 08 Aug	Finnair	direct

Also check the deals for one-way flights from Chicago to Madrid 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 Madrid in August from $509

Return flights