There is an interesting decision process in the mind of the business passenger. The decison of who to fly with is a combination of frequency of available flights, proximity of the airport, cost of flight, service given, who is paying and urgency of the need to be at the destination.. .There is an imaginary line between, say, Heathrow and Luton presuming that Luton provides one daily flight to a destination and Heathrow provides, say, twenty flights.. .That imaginary line, marking the decision point of whether you travel to Heathrow or Luton, will move depending on the weight you give any of the variables.. .A person living in Luton, working for a multi-national and told he must be at the destination tomorrow or else, may well go to Heathrow. A person living in Hounslow, fancying a trip and paying their own fare may go to Luton. And every alternative between.