Cheapest return flights from Chicago to Madrid in September from 365€

AirHint found the following cheapest return flights from Chicago (ORD) to Madrid (MAD) in September 2026 (see full year).

Return flights

22 Sep - 29 Sep Finnair direct
20 Sep - 07 Oct Finnair
21 Sep - 07 Oct Finnair
19 Sep - 07 Oct Iberia
20 Sep - 27 Sep Iberia direct
02 Sep - 16 Sep British Airways direct
20 Sep - 07 Oct British Airways direct
21 Sep - 07 Oct British Airways direct
19 Sep - 07 Oct Finnair direct
09 Sep - 14 Sep Finnair direct

Also check the deals for one-way flights from Chicago to Madrid in September.

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