The most common and most likely answer to this crossword clue is the 7 plus 6 letter word ONE-WAY TICKET
I've seen this crossword clue in The Guardian
O
N
E
-
W
A
Y
T
I
C
K
E
T
More clues leading to the result ONE-WAY TICKET
Buddy explains!
The straight part
We know that "used to go there" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case used to go there = one-way ticket.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.