(Reuters) - Boeing Co raised its profit and cash flow expectations for 2019 on Wednesday, sending shares up more than six percent amid a boom in air travel and speedier 737 production.Chicago-based Boeing said it expects to deliver between 895 and 905 commercial aircraft in 2019, up from 806 aircraft it delivered last year, which - although just below company targets - kept it ahead of rival Airbus SE for a seventh year.Investors closely watch the number of planes Boeing turns over to airlines..