AirHint found the following cheapest one-way flights from Chicago (ORD) to Madrid (MAD) in August 2026 (see full year).
One-Way flights
| 10 Aug | Aer Lingus | ||
| 02 Aug | Aer Lingus | ||
| 16 Aug | Aer Lingus | ||
| 18 Aug | Iberia | direct | |
| 03 Aug | Iberia | direct | |
| 02 Aug | Iberia | direct | |
| 16 Aug | Iberia | direct | |
| 15 Aug | Iberia | ||
| 08 Aug | Aer Lingus | ||
| 01 Aug | Iberia | direct |
Also check the deals for return flights from Chicago to Madrid in August.
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