Cheapest return flights from St. Louis to Madrid in October from $583

AirHint found the following cheapest return flights from St. Louis (STL) to Madrid (MAD) in October 2025 (see full year).

Return flights

14 Oct - 21 Oct United
24 Oct - 31 Oct United
09 Oct - 16 Oct United
19 Oct - 26 Oct Iberia
06 Oct - 13 Oct Iberia
29 Oct - 05 Nov Iberia
03 Oct - 10 Oct Iberia

Also check the deals for one-way flights from St. Louis to Madrid in October.

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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