Connection flights between all the European cities are operated by many low cost airlines. To make a basic idea how to connect Milan, Rome, Paris, London, Brussels, Amsterdam or main airports in Germany from your hometown you may use service of Skyscanner. ESTA certificate is required to visit USA. As this is possible error fare please book your connection flight and accommodation only once you get e-ticket by mail.
Booking samples
Italy - Miami from €283
Amsterdam - Miami for €329
Brussels - Miami for €306 (+€22 booking fee)
Paris - Miami for €335
Spain - Miami from €334
London - Miami for Ł302
Germany - Miami from €394
Italy - Miami - Germany for €283
Brussels/Amsterdam - Miami - Germany from €314
Travel dates
Outbound flights on Monday or Wednesday
Return flights on Monday, Wednesday or Friday
Promotional tariff with Air Europa allows to book to these flights in travel period till 26th of March 2015. This is based on latest date of your return flight from USA back to Europe. If you want to compare hotel rooms offered by leading booking sites you may check here.
Booking sample of cheap flights to Miami in USA from Europe for €283 here. In this case you would be departing from Milan to Miami on 9th of February. Your return flight would be then on 26th of February from USA back to Italy.