If British Airways is the world's favourite airline, then Delta must be America's favourite then. They operate domestic and international air routes throughout the world. And since they have just merged with Northwest Airlines, you might be hearing more about Delta Air Lines soon. For myself, I don't trust mergers. Why? Well, if a company gets too big, they start to lose focus. Instead of concentrating on improving their service, they start to worry about stock value and shares. Anyway, Delta Air Lines has a fleet size of over 700 aircrafts and they serve 247 locations. They are headquartered at Altanta airport, which is one of the world's busiest airport. You can easily book a flight online and sometimes, they do have special fares. You can also find flight status and other useful information on travelling on their website. Their slogan is "Keep Climbing". Well, you better hope that they keep climbing until the destination is reached, if not, I won't be flying on their airline anytime soon.