Qatar is well served by several major airlines, with the most prominent being Qatar Airways, one of the few five-star airlines in the world: www.qatarairways.com.
Travel in and around Doha is readily arranged through local taxi or limousine companies, available on arrival at the airport or by appointment. Most hotels provide airport service, on request, and can arrange car service by the day or week.
Visas are available on arrival for citizens of 33 countries, or by advance application for others. Full information can be found at www.dohaairport.com/services_visaregulations.html If you are not eligible for the on-arrival visa, and require an invitation letter, please send a request to DohaTC@QCERT.org.