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

Return flights

02 Dec - 09 Dec	Iberia
04 Dec - 07 Dec	Iberia
31 Dec - 12 Jan	Air France
11 Dec - 23 Dec	Air France
11 Dec - 14 Dec	Air Canada
06 Dec - 23 Dec	Iberia
01 Dec - 23 Dec	British Airways
01 Dec - 07 Dec	Iberia
09 Dec - 10 Jan	Iberia
25 Dec - 09 Jan	Iberia
01 Dec - 31 Dec	British Airways
18 Dec - 11 Jan	Frontier Airlines
13 Dec - 05 Jan	Spirit Airlines
23 Dec - 07 Jan	Frontier Airlines
24 Dec - 28 Dec	Frontier Airlines
17 Dec - 07 Jan	Spirit Airlines
16 Dec - 05 Jan	Spirit Airlines
19 Dec - 08 Jan	Spirit Airlines
22 Dec - 05 Jan	Spirit Airlines
23 Dec - 28 Dec	British Airways

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

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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Cheapest return flights from Houston to Madrid in December from $438

Return flights