Airlines, airports and passengers: nothing but gains this year [INFOGRAPHICS]

There are a whole lot more of us flying this year: 4.3 percent more, to be exact. That’s the increase in domestic air traffic from September 2009 to September 2010, according to the latest data from the U.S. Department of Transportation. In that month, U.S. airlines had 57.3 million passengers, leading to the largest year-over-year gain since September 2007. Meanwhile, international passenger traffic on U.S. flights surged 9.4 percent year over year.

For the first three quarters of 2010, scheduled domestic and international passengers were up 1.5 percent, suggesting that the recovery has gained momentum throughout the year. Domestic passengers gained 1 percent, with international passengers up 5.3 percent. Relative to 2008, though, passenger traffic is off 6.8 percent.

So, who wins? Of course, the airlines have had a relatively fantastic year, especially the worst of them. Delta, considered bottom of the barrel, surged from #3 in September 2009 to #1 in September 2010, with more than 9 million enplaned passengers, up 68.6 percent year over year (but don’t forget that the Northwest merger plays a role in this. Delta‘s also the top dog for the first nine months of the year for the same reason, followed by Southwest, American Airlines and United Airlines.

Atlanta Hartsfield-Jackson International Airport remains the busiest in the United States by a considerable margin. Close to 32 million passengers passed through in the first nine months of 2010, an increase of 1.1 percent year over year. Atlanta led Chicago O’Hare, which came in second, by more than 9 million passengers so far this year. For the greatest gains, look to Charlotte: it was eighth on the list but posted a growth rate of 6.5 percent YTD.

Las Vegas was the only airport in the top 10 for the first nine months of 2010 to post a year-over-year decline. The number of enplaned passengers dropped by a rather substantial 3.6 percent year over year, hardly surprising given the fact that the Las Vegas tourism business has been slammed by the recession. Also, outbound traffic from Las Vegas is likely constrained by the local economy, which has been battered pretty badly (as real estate prices indicate).

Even though the number of passengers increased for airlines and airports, the number of flights operated slipped 1.2 percent from the first nine months of 2009 to the first nine months of 2010. Likely, the airlines were tightening up their flights, making better use of available seats and cutting expenses.

[photo by Yaisog Bonegnasher via Flickr]