And what the customer wants, the customer gets. At least that's what Emirates is hoping for.

Emirates wants an A380 "neo" — a superjumbo with newer, more fuel-efficient engines.

("Neo" is the designation that Airbus gives to aircraft models that have had their engines and aerodynamics upgraded.)

As Business Insider reported last September, Emirates' CEO Tim Clark said the airline could order another 60-70 non-neo superjumbos, valued at a whopping $29 billion.

This figure seems to have changed.

This week at the World Economic Forum in Davos, Switzerland, the outspoken airline boss said that his company would up the potential order to 100 additional A380s, if a new engine option becomes available, Bloomberg reported.

In an interview with Bloomberg TV, Clark essentially told Airbus that "if you build it, we will buy it."

The total value of those 100 superjumbos? $43 billion.

Although some airlines have had a hard time filling the seats on the massive double-decker plane, Emirates doesn't seem to be one of them.