Every year 1.4 billion passengers fly on an international trip.
In all, about 41 million passengers have flown on People since it started.
The number of passengers flying on international flights increased 8 percent, to 1.6 billion.
By the end of the year, 450 million passengers will have flown on American carriers.
About 140,000 passengers flew directly between the two countries last year, but air service has become inadequate.
But passengers flying to those cities often have little choice of airlines.
The number of passengers flying to its near 70 destinations grew six percent in 2011 to 4.7 million.
The number of passengers flying the airline jumped from 25,000 in 1987 to 40,000 last year.
The question for the airlines is this: Will that passenger fly again, unless he absolutely has to?
Passengers flying on major international carriers may not be affected to the same degree.