You can book your own rail transport or this can be a travel option as part of your package holiday if you book through a tour operator.
Not necessarily a much longer journey when you take into account not having to be at an airport 2 or 3 hours before your flight at either end and less likely to be subject to delays.
The advantages of Ski Holidays by Train include:
No queueing in airports and a more relaxing journey.
Enjoy the scenery.
Relax in your seat with more space, no seatbelt and freedom to move around the carriage.
Children love train jouneys and they have space to play games or watch DVDs.
No luggage charges