The International Airfare Specialists
Go to the companies (normally, ethnic agents) that sell tickets to only a single area, and deal with only one or two airlines
Seoul or Hong Kong: Boston's Korea Travel & Tours (800/473-1922 or 617/267-7777, firstname.lastname@example.org) specializes in one country (Korea, and in flights from Korea to Hong Kong) and has contract fares with several Asian and North American airlines.
Middle East, Isreal & Africa
Middle East: Servicing one of the largest Middle Eastern communities in America, in suburban Southfield, Michigan, outside Detroit, consolidator American Center Travel (800/356-1030 or 248/350-1030, email@example.com) boasts contract fares with several carriers flying to cities in the Middle East, and Africa too.
South Africa and other nations in southern Africa: Karell's African Dream Vacations, of Coral Gables, Florida (800/327-0373 or 305/446-7766, karell.com), is a major consolidator for South African Airways.
South Africa from either U.S. coast: Air Centre, part of African Travel in Glendale, California (800/727-7207 or 818/507-7893, africantravelinc.com), was founded in South Africa 31 years ago and opened in the United States five years later; it has offices both here and in Cape Town and contracts with several international airlines that service South Africa. A bonus: The agency supplies all clients with free cell phones for use in Africa.