Nouns ending in -age are usually masculine.
The suffix often marks an action, a result, or a collection.
Is voyage masculine or feminine?
levoyage
The rule behind it
98.8% of -age nouns are masculine
In context
J'espère que tu as fait bon voyage.
I hope you had a nice trip.
Un voyage en Amérique est hors de question.
A trip to America is out of the question.
Un voyage à Hawaii coûte environ 200 dollars.
A trip to Hawaii will cost you about 200 dollars.