Airport by Rail conditions of travel 
Airports by Rail are subject to the following conditions: a minimum of two passengers must travel on a return journey. The return journey must be more than 48 hours after the outward trip and the ticket must be part of a package including overseas travel by air. *A child between the age of 5 and 15 years old travels free with each paying adult. Children under the age of 5 years old travel free of charge.