AirHint found the following cheapest one-way flights from Chicago (ORD) to Madrid (MAD) in October 2026 (see full year).
One-Way flights
| 19 Oct | Iberia | ||
| 11 Oct | Iberia | direct | |
| 19 Oct | Iberia | direct | |
| 16 Oct | Icelandair | ||
| 09 Oct | Icelandair | ||
| 09 Oct | Iberia | direct |
Also check the deals for return flights from Chicago to Madrid in October.
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