Unfortunately, train isn't on the way (2,7)
I believe the answer is:
in transit
'on the way' is the definition.
(I've seen this before)
'unfortunately train isn't' is the wordplay.
'unfortunately' indicates an anagram.
'train'+'isnt'='trainisnt'
'trainisnt' is an anagram of 'IN TRANSIT'.
(Other definitions for in transit that I've seen before include "En route" , "While being conveyed" , "On its way" , "on the move?" , "Being transported" .)