Flight
Barcelona has two international airports, but this is the closest one to the train station!
Flight
Should you choose to forgo the train and decide to fly into the Carcassonne AirPort, this would be your landing location. Word of caution: very few flight fly into this airport- it is very similar to a "regional" airport.
Train
The train runs multiple times a day, and is a very cost effective was to get to Carcassonne! FYI: The train schedule does not come out until three months before the desired travel day!
Rental Car
Rental car company if you are interested in renting a vehicle during your stay!