Cheapest one-way flights from Chicago to Madrid in September from 310€

Best time to book flights for Chicago (ORD) to Madrid (MAD) flights at AirHint

AirHint found the following cheapest one-way flights from Chicago (ORD) to Madrid (MAD) in September 2025 (see full year).

One-Way flights

19 Sep Icelandair
01 Sep Icelandair
25 Sep TAP
04 Sep Icelandair
03 Sep Turkish Airlines
17 Sep British Airways direct
25 Sep British Airways direct
19 Sep British Airways direct
03 Sep Iberia direct
01 Sep Iberia direct

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

Skyscanner

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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