In March, domestic hotel prices were up 2.9 percent from a year earlier and international rates, 1.2 percent, according to a report from Adobe's Digital Price Index. In the most popular destinations, summer hotel rates are up an average 17 percent, according to Orbitz.com. "There's a very clear trade-off," said Mickey Mericle, vice president of marketing and consumer insights at Adobe. As cheap airfares and gas make it more enticing to travel, hotel inventory fills up, she said — and the Adobe report found that destinations with the lowest flight costs per mile had the highest hotel prices. But travelers still have plenty of tricks and strategies they might employ to keep higher lodging costs from busting their summer travel budget. Get the full story at CNBC Read also "U.S. summer forecast calls for record hotel demand, but low room rate growth"