Domestic flights in the USA are organized on the principle of hubs and spokes, like a bicycle wheel which has a hub at the centre and lots of spokes radiating out from it in all directions. One such hub is Houston in Texas: flights to over 100 other airports radiate out in different directions from there and half of these are non-stop flights.<br><br>For example, if you want to get from Miami to Los Angeles, you can catch a Continental Airlines flight from Fort Lauderdale, change planes in Houston and fly on to Orange County.<br><br>The hub and spokes network has made flights cheaper and means that even quite small places are connected to each other by a major airline or feeder service. Another advantage of the system is that connecting flights are to some extent guaranteed. If one incoming flight is up to one hour late, all the connecting flights (up to 30 or 40) will be held until it arrives. So if you are on a delayed flight, that’s good news-but it’s bad news for everyone else because they all have to wait for your plane to land.<br><br>From the point of view of overseas connections, many hubs also operate as entry points or ‘gateways’, where passengers flying in from another country can join the hub and spoke system. The same type of system does operate in other parts of the world: for example, you can fly from one part of Europe to another via Frankfurt or Paris or Amsterdam or London, but the difference in other parts of the world is that the fares are not any cheaper so there’s no special advantage.
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