Passenger activity at Des Moines International Airport was up 10.2 percent in July compared with the same month a year ago. A total of 211,368 passengers passed through the airport last month, up from 191,780 in July 2013. In the first seven months of the year, more than 1.3 million passengers have gone through the airport, up 6.1 percent from the same period a year ago. Cargo activity at the airport was up 8.9 percent for the month and is up 1.1 percent for the year so far.