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

Return flights

24 Mar - 31 Mar	United
23 Mar - 01 Apr	Air France
24 Mar - 02 Apr	Air France
09 Mar - 18 Mar	Finnair
01 Mar - 31 Mar	Air France
16 Mar - 30 Mar	Air France
11 Mar - 18 Mar	United
18 Mar - 25 Mar	United
04 Mar - 18 Mar	United
16 Mar - 23 Mar	Air France
04 Mar - 16 Mar	Air France
10 Mar - 19 Mar	Air France
22 Mar - 08 Apr	Iberia
24 Mar - 08 Apr	United
30 Mar - 06 Apr	Air France
21 Mar - 08 Apr	Finnair
20 Mar - 08 Apr	KLM
19 Mar - 08 Apr	United
29 Mar - 11 Apr	Iberia
28 Mar - 06 Apr	KLM

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

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 March from 408€

Return flights