If you ever are on a tightly-packed flight, it’s impossible not to notice when people are sick. Every cough leads to a cringe and although you might not be a germaphobe, hoping you don’t get sick is a perfectly normal reaction.

As reported by CNN, it might be the visibly sick person who may get you sick; it might be the airport itself you came from.

Researchers at the Massachusetts Institute of Technology’s Civil and Environmental Engineering department looked at the 40 largest U.S. airports and figured out which ones would be the most likely to spread a disease in the event of an outbreak.

The researchers took into account travel patterns, geographic locations and interactions between airports and even passenger waiting times.

John F. Kennedy International Airport in New York and Los Angeles International Airport scored first and second on the list, respectively. Honolulu International Airport ranked third.

The researchers said Honolulu’s place in the air transportation network, in the Pacific Ocean, has many connections to distant, large and well-connected hubs.

Boston Logan International Airport ranked 15th.

Others on the list are San Francisco International Airport, Newark Liberty International Airport, Chicago O’Hare International Airport, and Washington Dulles International Airport. Atlanta, Miami International Airport and Dallas/Fort Worth International Airport.

What do you think about the list? Have you been to any of the top 10 airports? What do you do to try to minimize getting sick while traveling?