The city of London has 6 commercial airports.
ЁЯЫл Heathrow - 12.27 sq km
ЁЯЫл Stanstead - 7.59 sq km
ЁЯЫл Gatwick - 6.74 sq km
ЁЯЫл...
more... Luton - 2.31 sq km
ЁЯЫл Southend - 1.33 sq km
ЁЯЫл London City - 0.5 sq km
With more airports operation, London has become a base for low cost airlines in EU