Looking on the internet deeply has found these results:

in the plane is the most popular phrase on the web.

on plane 16,470,000 results on the web	in the plane 158,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
However, it is highly unlikely that the effect of the advertising on visitors lasted or had an influence on plane ticket purchases for more than a few weeks after it was posted on the Ryanair internet site. I need you to put me on plane. it will be prohibited to take ammunition on plane journeys from 29 April 2010, a restriction which also applies to hold baggage. I must warn you, you don't just go on plane. According to the tail number on plane is registered to a David Dunne. "Toilets take up too much space on plane." I spent $500 on plane fare, so... Given that the Member States can grant derogations from the application of the article banning the carriage of ammunition on plane journeys, how does the Commission justify the ensuing administrative burden?	Figure 2.7.l shows the basic geometry in the plane normal to the aircraft flight path. Your bag's in the plane. I saw you yelling at Holly in the plane. A projection of the reference line R shall be drawn in the plane referred to in paragraph 7.4.3.1. My daughter LeiIa, she's still in the plane. Hundreds more blown up in the plane. Please, get in the plane. In 10 minutes, we're in the plane.

on plane

16,470,000 results on the web

in the plane

158,000,000 results on the web

More popular!

However, it is highly unlikely that the effect of the advertising on visitors lasted or had an influence on plane ticket purchases for more than a few weeks after it was posted on the Ryanair internet site.
I need you to put me on plane.
it will be prohibited to take ammunition on plane journeys from 29 April 2010, a restriction which also applies to hold baggage.
I must warn you, you don't just go on plane.
According to the tail number on plane is registered to a David Dunne.
"Toilets take up too much space on plane."
I spent $500 on plane fare, so...
Given that the Member States can grant derogations from the application of the article banning the carriage of ammunition on plane journeys, how does the Commission justify the ensuing administrative burden?

Figure 2.7.l shows the basic geometry in the plane normal to the aircraft flight path.
Your bag's in the plane.
I saw you yelling at Holly in the plane.
A projection of the reference line R shall be drawn in the plane referred to in paragraph 7.4.3.1.
My daughter LeiIa, she's still in the plane.
Hundreds more blown up in the plane.
Please, get in the plane.
In 10 minutes, we're in the plane.