Over 100000, counting domestic airlines.
The vast majority of the major airlines around the world have frequent flier programs.
Trans World Airlines was created in 1930.
Trans World Airlines ended in 2001.
Seaboard World Airlines ended in 1980.
World Atlantic Airlines was created in 2002.
Mayan World Airlines was created in 1996.
Mayan World Airlines ended in 1999.
United Airlines, Singapore Airlines
American Airlines took over TWA (Trans World Airlines) in April 2001
There are many companies including: Qantas Ryanair Singapore Airlines Lufthansa Malaysian Airlines Virgin International Jetstar
there are many, Air France, Air Canada, American Airlines, LuftHansa,KLM etc.... there are also popular low cost airlines such as ryanair, easy jet or jet2.com
Seaboard World Airlines was created on 1946-09-16.