Answer:
Idiom
Step-by-step explanation:
An idiom is a phrase or expression that typically presents a figurative, non-literal meaning attached to the phrase; but some phrases become figurative idioms while retaining the literal meaning of the phrase. Categorized as formulaic language, an idiom's figurative meaning is different from the literal meaning.
I think this is an idiom because of the words "One way ticket." It's not actually a ticket.