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

Return flights

02 Mar - 10 Mar	United
16 Mar - 26 Mar	KLM
05 Mar - 12 Mar	Iberia
12 Mar - 19 Mar	Air Canada
23 Mar - 30 Mar	Iberia
16 Mar - 25 Mar	KLM
11 Mar - 18 Mar	Iberia
17 Mar - 24 Mar	Iberia
27 Mar - 17 Apr	United
08 Mar - 15 Mar	Iberia
26 Mar - 02 Apr	Iberia
13 Mar - 23 Mar	Spirit Airlines

Also check the deals for one-way flights from Austin 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 Austin to Madrid in March from 413€

Return flights