Cheapest return flights from Houston to Madrid in December from $423

AirHint found the following cheapest return flights from Houston (IAH) to Madrid (MAD) in December 2025 (see full year).

Return flights

04 Dec - 10 Dec Spirit Airlines
03 Dec - 10 Dec Lufthansa
03 Dec - 12 Dec Iberia
10 Dec - 14 Jan Air Canada
06 Dec - 10 Dec Spirit Airlines
01 Dec - 08 Dec Iberia
05 Dec - 12 Dec Iberia
09 Dec - 16 Dec Iberia
10 Dec - 13 Dec Spirit Airlines
30 Dec - 08 Jan Iberia
14 Dec - 11 Jan KLM
22 Dec - 17 Jan Air Canada
28 Dec - 08 Jan KLM
13 Dec - 21 Dec Iberia
10 Dec - 20 Dec Frontier Airlines
25 Dec - 06 Jan Iberia
23 Dec - 07 Jan Frontier Airlines
16 Dec - 06 Jan Spirit Airlines
18 Dec - 11 Jan Iberia
13 Dec - 05 Jan Spirit Airlines

Also check the deals for one-way flights from Houston to Madrid in December.

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