CAR
Inntal Autobahn (A12 - toll sticker required, A13 - toll sticker and road toll) - Zillertal exit, federal highway (B169) to Mayrhofen, Tuxer Landesstrasse in the direction of Hintertux. (from the Zillertal exit off the autobahn to Hintertux is 50 km). The Tuxer Landesstrasse from Mayrhofen to Hintertux is open to traffic all year round. Chains required in snowy or icy conditions!

TRAIN
to Jenbach/Tyrol (stop for express trains), continuing on with the Zillertal railway or Zillertal bus to Mayrhofen, then catch a Christophorus-line bus to Tux.

Austrian Railways Online Schedule Information
German Railways Online Schedule Information 

PLANE
Airport Distances: Innsbruck 90 km, Munich 230 km, Salzburg 160 km;

Direct flights to Innsbruck from Amsterdam (Air Alps), Rotterdam (Welcome Air), Antwerp (Welcome Air), Hanover (Welcome Air), Frankfurt, Vienna, ...

Detailed flight schedules are available here !