Heads up, deal hunters! There's a sweet fare popping up for roundtrip flights to Madrid, Spain, for around $551. This is a solid price for a European getaway, especially if you've been dreaming of tapas, flamenco, and exploring historic sites. So, why should you care? Well, Madrid is an amazing city and flights under $600 are always worth a look. To find this deal, use the Matrix Airfare Search by ITA Software to find the cheap dates that work for you. Once you know when you want to go, head over to your favorite online travel agency or directly to the airline's website to book. Madrid is calling - don't miss out on this chance for an affordable European adventure!