Cheapest return flights from Houston to Madrid in May from 422€

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

Return flights

05 May - 28 May British Airways
05 May - 22 May United
05 May - 03 Jun Air Canada
20 May - 26 May Air Canada
19 May - 26 May Iberia
08 May - 04 Jun British Airways
04 May - 11 May Iberia
14 May - 21 May Iberia
01 May - 11 May Air Canada
25 May - 08 Jun Iberia
28 May - 10 Jun United
29 May - 12 Jun Air Canada
24 May - 31 May Iberia
29 May - 05 Jun Iberia

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

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