If your country of nationality appears on the list below, no advance visa arrangements are required to visit the UAE. Simply disembark your flight at Dubai International Airport and proceed to Immigration, where your passport will be stamped with a 30-day visit visa free of charge. This can be extended for an additional 30 days at an additional charge.
United States of America
Travellers from countries not listed above will need to arrange a visa in advance of travel. For details see this link.