This project produces Ecolabels for the most flown aircraft to compare their environmental impact. For this matter, different aircraft types, cabin layouts from various airlines and several engine configurations are taken into account. The general buildup of an Ecolabel is described, and its criteria elements are highlighted. It is based on existing methods, algorithms, rating scales and a basic architecture of an Excel calculation tool. In this project, functions to automatically create and print the Ecolabels have been added to the Excel tool. The usage of Ecolabels is demonstrated on using the example of four significant case examples covering a variety of comparison possibilities. The performed evaluations show the potential of Ecolabels by comparing low cost with legacy carriers, two different airline fleets, three engine configurations on the same aircraft type and two manufacturers with a similar aircraft size. One major result of the calculation of Ecolabels in aviation in this project is the better rating of aircraft with a higher seating density of passengers in the cabin. The application of the Ecolabel should support the passengers to make them aware of their environmental impact.