A lot of american airlines companies have regular flights to St Martin, whish enable to switch to the other islands of the archipelago.
To Guadeloupe main island, American Airlines and charters companies have severals flights each week.
The Guadeloupe islands have 2 international airports. From the USA, you may arrive at "Pôle Caraibes" in Guadeloupe or at "Juliana Airport" in the dutsh side of St Martin. 7 regional airports enable to jump from an island to another with smaller planes, either from regular Caribbean companies or not.