Advertised in 1918 as the largest aircraft company in the world, Airco established the first airline in the United Kingdom, Aircraft Transport and Travel Limited, as a subsidiary.
Diiklankan tahun 1918 sebagai perusahaan pesawat terbesar di dunia, Airco mendirikan maskapai pertama di Inggris, Aircraft Transport and Travel Limited, sebagai anak perusahaan.