There are many reasonably priced flights to Italy, generally to the larger international airports in Milan or Rome. From there, you can easily rent a car and drive to Tuscany or take a train to Florence. You can also look for flights that fly into Pisa, Bologna or Florence (from other European hubs) to get even closer to your destination without needing the extra travel in between.
If you live in Europe, it is easy enough to travel overland to Tuscany (by car or train) but there are also good deals with low-cost air companies, such as Ryan Air (it flies both to Pisa and Bologna). Depending on whether you want to visit other areas in Italy, you should also consider traveling by train as it is very convenient. Read the articles below for further details on the various ways to get to Tuscany and start your wonderful holiday in this beautiful region!