Cheapest return flights from Houston to Madrid in September from 488€

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

Return flights

24 Sep - 30 Sep British Airways
24 Sep - 28 Sep Delta
29 Sep - 05 Oct Iberia
30 Sep - 25 Oct Air France
27 Sep - 07 Oct United
26 Sep - 01 Oct KLM
23 Sep - 30 Sep Turkish Airlines
23 Sep - 07 Oct United
27 Sep - 17 Oct United
22 Sep - 29 Sep Turkish Airlines
20 Sep - 03 Oct American Airlines
26 Sep - 03 Oct Air Canada
19 Sep - 10 Oct United
27 Sep - 18 Oct Frontier Airlines
19 Sep - 26 Sep United
19 Sep - 22 Sep Lufthansa

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

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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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