The Kingdom of Thailand is situated in the center of Southeast Asia, with Bangkok as the capital city, a large metropolitan area. Thailand's land area is 198 114 square miles (513 115 square kilometres). Thailand is approximately 1553 miles long from north to south and the widest part is approximately 776 miles from east to west. The country shares a border with Burma (Myanmar) on the west and north, Laos People's Democratic Republic on the north and east, Cambodia on the southeast, and Malaysia on the south. It borders two bodies of water, the Gulf of Thailand (1143 coastal miles) and the Andaman Sea of the Indian Ocean (528 coastal miles).

Thailand is divided into 76 provinces (changwad) with five main regions (Central, Northern, Northeastern, Southern, and Eastern) with a diversity of landscape and natural resources.

The Central Region and its plain has the highest fertility, is an extensive rice-producing area, and has many major industries around the densely populated area of Bangkok. The Northern Region comprises a mountainous area of natural forest, ridges, and deep, narrow alluvial valleys. Chiang Mai is the second-most populous city and province and is the center of the Northern Region. The Northeastern Plateau Region is an arid region with a rolling surface and undulating hills. The large Nakon Ratchasima Province serves as the gateway to the Northeastern Region. Khon Kaen and Ubon Rajathani are considered regional development provinces in the Northeastern Region after the establishment of government universities there. The rain-forested Southern Region peninsula is hilly, thick in forests, and has rich deposits of minerals and iron ores. This region is the center for the production of rubber and the cultivation of other tropical crops, and also is home to many Thai Muslims. Hat Yai, the major business district of Songkhla Province, serves as a regional center in transportation, communications, and education. Phuket is a major tourist attraction in the south. The Eastern Region, including Chon Buri Province, is known primarily as a major tourist area because of the beautiful seashores and good sources of seafood. From 1998, the eastern seaboard also was established to be the main business area of the petroleum industry and shipping. A new Bangkok International airport Suvarnabhumi (code BKK), situated approximately 30 miles from Bangkok, opened in the eastern area in late 2006 for both international and domestic travel and shipping. However, the older airport (Don Muang) still may be used for some domestic air service and some shipping. Thus, it is imperative to determine what airport is being used for domestic travel and air shipments.