Some are international travelers, others have traveled widely closer to home.
Since international travelers have to arrive earlier than ever to clear security, they can spend hours at an airport.
In 1988, the last year for which figures are available, the airport handled 32 percent of all international travelers.
Nobody seems to be thinking very hard about how the international traveler often goes away for longer than a weekend.
Still, because of travel restrictions, only 3.4 million passengers were international travelers.
But there are ways for international travelers to protect themselves.
"The business and international travelers who were here on vacation are gone."
One of the little rituals all international travelers go through is customs.
"For the group of people who are international travelers, this is going to be very useful," he said.
I'm an international traveler and no country is really my 'home.