Online sales increased 25 percent for the week ending May 29, compared with the corresponding week a year ago, reaching $1.22 billion from $976 million, Internet Retailer reports, citing comScore figures. Online travel sales for the week were up a whopping 53 percent, reaching $1.12 billion from $735 million in the corresponding week a year ago. Total retail sales for the week ending May 28 were up 3.8 percent from the same period in 2004, according to ShopperTrak's National Retail Sales Estimate.