Air transactions processed by mega travel agencies and settled through ARC rose 2 percent year over year in February. Mega agencies include American Express Global Business Travel, BCD Travel, Carlson Wagonlit Travel, Egencia, HRG and Omega World Travel. Online travel agency transactions rose 6 percent year over year last month, while the group of travel agencies ARC classifies as "other" posted an increase of 8 percent, according to ARC data. In total, U.S. travel agency air ticket transactions settled through ARC in February rose 6 percent year over year. Yet, total sales fell nearly 1 percent year over year.