Cheapest return flights from Denver to Madrid in May from $557

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

Return flights

06 May - 19 May British Airways
05 May - 19 May British Airways
05 May - 15 May American Airlines
06 May - 15 May Air Canada
19 May - 28 May Air Canada
19 May - 26 May Iberia
19 May - 29 May Iberia
05 May - 16 May Icelandair
05 May - 17 May Icelandair
13 May - 26 May Air Canada
19 May - 01 Jun British Airways
31 May - 10 Jun Air Canada
29 May - 12 Jun Air Canada
29 May - 05 Jun Iberia
21 May - 05 Jun Frontier Airlines
31 May - 18 Jun Icelandair
27 May - 07 Jun Frontier Airlines

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

Powered by

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.

Book a cheap hotel in Madrid

Cheap car rent in Madrid

Feel free to contact us with any feedback or request another flight research.