Cheapest one-way flights from Chicago to Madrid in May from $330

AirHint found the following cheapest one-way flights from Chicago (ORD) to Madrid (MAD) in May 2026 (see full year).

One-Way flights

04 May Aer Lingus
18 May Spirit Airlines
08 May Aer Lingus
30 May TAP
11 May ITA Airways
28 May Spirit Airlines
18 May British Airways direct
11 May American Airlines direct
04 May American Airlines direct
08 May American Airlines direct

Also check the deals for return flights from Chicago to Madrid in May.

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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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