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London's Heathrow airport is the busiest.
All of the busiest airports in the world have international flights, so the busiest airport with international service would technically be Hartsfield-Jackson Airport in Atlanta. However, as with most airports in the US, most passengers are domestic. The world's busiest airport by international passengers is London Heathrow.
There are many. A few are listed below.LAX Los Angeles InternationalEWR Newark Liberty International (one of several serving New York City)JFK John F. Kennedy International (another NYC airport, originally called Idlewild)LGA La Guardia Airport (the third major NYC airport)ORD O'Hare International (Chicago, formerly the world's busiest airport, currently second busiest)DFW Dallas Fort WorthATL Hartsfield-Jackson Atlanta International (the current (2008) world's busiest airport)
JFK, (John F Kennedy International Airport) is the largest gateway airport in the United States. In 2011, its passenger traffic was just slightly under forty-eight million passengers. It is the busiest of the three airports serving the metropolitan New York area, (JFK, EWR, LGA) In global traffic, JFK is the 17th busiest airport in the world and the sixth busiest airport in the US. (Behind: 5-DEN, 4-DFW, 3-LAX, 2-ORD, 1-ATL). Combining the three airports operated by the Port Authority of New York and New Jersey, they would rank as the world's second busiest airport, behind London's Heathrow, Gatwick, Stansted, and Luton City airports.
Chicago(O"hare) has the dubious honour of being the busiest although not the largest.
Busiest what? New York has the busiest stock exchange. Florida has the busiest funeral directors. California has the busiest movie industry.
the busiest city would either be New York or Hollywood.
New York is the busiest north east state.
new york
I can't say about biggest but the busiest one is in Connecticut off I-95
"The Auckland airport has the most New Zealand flights coming in and out of their airport. It is New Zealands' busiest airport, and there are several different airline packages to choose from."
According to the Port Authority of New York and New Jersey, the busiest bridge in the world is the George Washington Bridge. It carries 102 million cars across its span every year. The bridge connects Manhattan with Fort Lee, New Jersey.