AirHint found the following cheapest one-way flights from Chicago (MDW) to Madrid (MAD) in March 2026 (see full year).
One-Way flights
| 26 Mar | Porter Airlines (Canada) Ltd | ||
| 15 Mar | Frontier Airlines | ||
| 01 Mar | Air France | ||
| 12 Mar | Delta | ||
| 30 Mar | Air France | ||
| 28 Mar | Frontier Airlines |
Also check the deals for return flights from Chicago to Madrid in March.
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