ATLANTA--(BUSINESS WIRE)--#airline--Airfare prices are slowly climbing in markets with the strongest demand, according to BCD Travel's midyear update to the 2018 Industry Forecast. Meanwhile, the outlook for global hotel rates in 2018 remains unchanged with a 2-4% increase predicted over last year. BCD's airfare forecasts have increased in a number of markets compared to predictions when the 2018 Industry Forecast was originally issued in September 2017. As the economic outlook improves, strong global ai