FIRST CLASS – first class, also the best.
Passengers of this class are placed at the beginning of the plane,
have larger and more comfortable seats, better quality of services (food, beverages),
before the flight can relax
in special rooms at airports foreseen for this class ,
and when changing planes at further destinations, can not afford to refresh in the hot tub,
take a shower, change clothes … this class have only some airlines.

BUSINESS CLASS – business class.
In some airlines, when there is no first class this is the best class.
It goes a similar quality of service as well as first class,
and of the airline depends on the level of that quality.

ECONOMY CLASS – economy class.
It represents the most commonly used class.
The quality of services in this class may vary depending on the airline,
but must not deviate from the prescribed standards.
Unlike the first and business class, economy class customer service
is not enabled the luxury of separate rooms before the flight,
and in transit. In accordance with the service, price tickets in the economy class is the lowest.