Cheapest return flights from St. Louis to Madrid in March from 378€

AirHint found the following cheapest return flights from St. Louis (STL) to Madrid (MAD) in March 2026 (see full year).

Return flights

04 Mar - 11 Mar Iberia
10 Mar - 17 Mar Iberia
31 Mar - 07 Apr Iberia
05 Mar - 13 Mar Iberia
25 Mar - 01 Apr Iberia
19 Mar - 26 Mar Iberia
05 Mar - 14 Mar Frontier Airlines
06 Mar - 14 Mar Frontier Airlines
08 Mar - 15 Mar Iberia
06 Mar - 13 Mar Frontier Airlines
07 Mar - 15 Mar Aer Lingus
05 Mar - 15 Mar Iberia
28 Mar - 04 Apr Iberia

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

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