Is it on the plane or in the plane?

It is on the plane or in the plane depending on the context. “On” is usually the correct preposition of place for a plane, but sometimes “in” is also a correct option.

Use “on” to describe travelling or riding by plane or other form of mass transportation where you can stand or choose a seat (e.g., “I took a nap on the plane”).

You can use “in the plane” or “on the plane” when you’re distinguishing between a location “inside” rather than “outside” the plane (e.g., “I’m still at the gift shop, but my wife is already in the plane”).

Have you tried QuillBot’s free Grammar Checker? It will help you use “on” and “in” correctly in your writing.