The company that offers the most scheduled flights worldwide is the U.S. airline company Delta Airlines, serving 500 destinations in 105 countries, including 32 transatlantic flights and 600 weekly flights to 58 destinations. The airline company is a founder of the Sky Team alliance, which is based on negotiation and mutual assistance between a number of leading airlines.

The passengers flying with Delta Airlines are allowed to carry one piece of hand baggage up to 18 kg, and two pieces of registered luggage up to 23 kg each and size up to 157 cm.

Services offered by the company Delta Airlines include online check-in 24 hours before departure and a loyalty program, which is based on collecting miles with all other members of the Sky Team alliance and reductions in a variety of services.