Delta Air Lines

A major US airline, Delta operates domestic and international flights in North America, South America, Europe, Asia, Africa, the Middle East and the Caribbean. Delta carries passengers to more than 330 destinations around 57 countries with its 600 aircraft.

In the UK, Delta serves London Heathrow, London Gatwick, Manchester and Edinburgh. Its US hubs include Atlanta (the world's busiest hub), New York JFK, Cincinnati and Salt Lake City.

Delta plans to widen its network toward destinations such as Lagos, Nigeria and Tobago. It is currently the only major US airline to operate directly from the US to Africa.