Cheapest one-way flights from Houston to Madrid in September from $218

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

One-Way flights

24 Sep Spirit Airlines
25 Sep Spirit Airlines
30 Sep Spirit Airlines
11 Sep Spirit Airlines
13 Sep Frontier Airlines
19 Sep Spirit Airlines
15 Sep Spirit Airlines
16 Sep Spirit Airlines
04 Sep Frontier Airlines

Also check the deals for return flights from Houston to Madrid in September.

Skyscanner

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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