This has been discussed monthly, so a search will find more detailed results. However, in the United States the most traveled "air bridge" in 2002 was between South Florida and New York City, which outsed the typically top seeded New York City to Boston and Washington routes which have suffered as people start to take Acelea. However, that route includes people who make connections in ATL
, etc. In people flying exclusivley non-stop, FLL
is the most traveled route over 750mi (followed by JFK
), and I believe LGA
is most traveled under 750 miles (followed by LGA
) Other most traveled routes in the United States are from New York City to Atlanta, the Bay Area, Boston, Chicago, Los Angeles, and Orlando, from Los Angeles to the Bay Area, Honolulu to Maui, South Florida to Orlando and Tampa, Houston to Dallas, Chicago to the Bay Area, Los Angeles, and Seattle...just to name a very few.
Internationally, the most traveled route to Asia is Honolulu to Tokyo Narita; Caribbean is Miami to Nassau; Mexico is Los Angeles to Mexico City; Canada is Chicago to Toronto; Central America is Miami to San Jose; South America is Miami to Sao Paulo; Europe is New York City to London Heathrow.
Outside of the US, some of the world's most traveled routes include Madrid to Barcelona; Sao Paulo to Rio de Janeiro; Tokyo Narita to Sapparro; and Sydney to Melbourne.