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

Return flights

07 May - 22 May	Turkish Airlines
05 May - 12 May	Iberia
14 May - 31 May	Turkish Airlines
10 May - 17 May	United
21 May - 05 Jun	jetBlue
21 May - 04 Jun	jetBlue
25 May - 08 Jun	Condor
22 May - 03 Jun	Turkish Airlines
21 May - 07 Jun	Finnair
30 May - 11 Jun	Air France

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

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 May from $637

Return flights