Cheapest return ATL–MAD flights, May

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

Return flights

24 May - 02 Jun Frontier Airlines
28 May - 04 Jun Frontier Airlines
24 May - 10 Jun Frontier Airlines
26 May - 01 Jun Frontier Airlines
28 May - 18 Jun Frontier Airlines
29 May - 18 Jun Frontier Airlines
27 May - 12 Jun Frontier Airlines
25 May - 10 Jun Frontier Airlines
31 May - 06 Jun Frontier Airlines
12 May - 23 May jetBlue
28 May - 21 Jun Frontier Airlines
18 May - 25 May Frontier Airlines
13 May - 31 May Frontier Airlines
13 May - 20 May Frontier Airlines
21 May - 29 May Frontier Airlines
26 May - 31 May Frontier Airlines
12 May - 20 May jetBlue
16 May - 31 May Frontier Airlines
23 May - 29 May Frontier Airlines
20 May - 25 May Frontier Airlines

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

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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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