Cheapest return BWI–MAD flights, May

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

Return flights

26 May - 07 Jun Icelandair
31 May - 08 Jun Frontier Airlines
25 May - 02 Jun Frontier Airlines
24 May - 02 Jun Frontier Airlines
26 May - 31 May Icelandair
31 May - 07 Jun Frontier Airlines
27 May - 01 Jun Delta
22 May - 26 May Delta
27 May - 03 Jun British Airways
27 May - 05 Jun Icelandair
24 May - 28 May Icelandair
25 May - 01 Jun Frontier Airlines
26 May - 29 May Icelandair
22 May - 25 May Delta
25 May - 29 May Frontier Airlines
22 May - 27 May Frontier Airlines
27 May - 08 Jun Icelandair
21 May - 26 May Icelandair
23 May - 30 May Icelandair
22 May - 29 May Frontier Airlines

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

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