and Barbuda 20 11,515.3 miles (18,532.1 km) Codrington Airport (BBQ) Codrington , Barbuda , Antigua and Barbuda 21 11,511.9 miles (18,526.6 km) Gerald's Airport (MNI) Montserrat , British West Indies . Code formerly used for the destroyed W.H. Bramble (Blackburne) Airport . 22 11,482.1 miles (18,478.7 km) Val de Cães International