John Lennon and Paul McCartney would have been individually 2 of the most successful song writers in history. However, they decided to work together and achieved the greatest success a band has ever reached!! At the age of 16 they made a deal by which every song they wrote would be signed as Lennon-McCartney, a deal that they honor up to today. 
Therefore, I propose to rename the Liverpool Airport after Lennon-McCartney as a symbol that together we can fly much further than on our own.