Which is the best time to go on a cruise trip?

That all depends on where you are cruising. If you want to cruise in the Caribbean, I would suggest April. Spring Break is over so no rowdy college kids. And summer vacations haven't started so there is not a lot of over tired kids crying, or running all over the place. It is also not too hot like summers can be. It is also before hurricane season. Winter months can be less expensive but the seas tend to be rougher.

When it's NOT called the Titanic

We've always gone in the fall and winter.  Earliest was a short cruise to the Bahamas.  Latest was March from the Left coast thru the Panama Canal.  Did one just before Christmas, and that seemed to be the least crowded.  Lots of vacant tables at dinner.  Weather for all of them was fine.

When its not hurracain season.

on sundays at 3:47am

I've only gone on cruises in the summer; can't imagine that's the best time though. They've always been quite crowded.

I have only gone on cruises in the summer; can't imagine that's the best time though. They've always been quite crowded. If you want to go Florida then summer is the best time to go on cruise trip.