Visitors from the United States, Canada, Singapore and European Union nations are granted automatic visas on entry for up to 21 days with extensions available. Other nations should check with Dominica immigration before traveling.
By plane
There are two airports in Dominica, Melville Hall DOM and Canefield DCF. Most commercial flights land at Melville Hall. However, the airport is not able to accommodate jet aircraft. Night Landing has been approved starting at the beginning of October 2010; however, many airlines have not yet adjusted their itineraries to accommodate the added landing hours. The island can be accessed through San Juan, Antigua, Barbados, St. Maarten, Martinique, Guadeloupe and other Caribbean hubs. (http://www.dominica.dm/si...)