There are more than 20 flights to London and Paris from New York every single day. Imagine the traffic for these two major cities in Europe. There are all kind of travelers from businessmen to vacationers and shoppers to families going to visits their folks. All major carriers like British Airways, Virgin Atlantic, Continental Airlines, American Airlines, United Airlines, Air India, and Air France, Delta Airlines etc. have daily flights to these two major cities. Cheap flights to these destinations or cheap tickets to Europe are real bargain because of ongoing competition among them.
If we count other flights from other cities in U.S to London and Paris, one can guess how many flights and how many passengers flying each day. Major cities in U.S like Chicago, Los Angeles, San Francisco, Miami and Washington besides other cities one can guess the total load of passenger traffic and cargo combined. Cheap tickets to Europe from any of these cities are equally cheap and available at very low airfares.
There are host of other major cities in Europe that are very popular for American tourists or businessmen for many reasons. There is a long history between Europe and America ever since America was discovered. America is a land of immigrants and mostly came from Europe for many decades. There has always been trade between these continents in billions and trillions of dollars. Obviously for many years the traffic between these two has always been uprising. As a result there are many more flights between these two continents than other places in the world. Flights are many and competition drives the airlines to offer cheap tickets to Europe no matter which city flying to in Europe.
Calling airlines and your travel agents or checking online on few travel websites one can surely find cheap tickets to Europe that fits your budget. It has always been real fun going to Europe.