March air transactions processed by mega travel agencies and settled through ARC rose 3.4 percent year over year,

according to ARC data. Mega agencies include American Express, BCD Travel, Carlson Wagonlit Travel, Egencia, HRG and Omega World Travel. Online agencies as a group, including Orbitz for Business and Travelocity Business, witnessed a 12 percent rise in ARC air transactions from March 2014, while the group of travel agencies classified by ARC as "other" posted a 7.8 percent increase. In total, March U.S. travel agency air ticket transactions rose 8.2 percent year over year, according to ARC.