Is it safe to travel to Beijing amid the flooding? We fly out of US this Monday?

29 US citizens will be boarding a plane in Chicago, IL, USA on this Monday, July 30 for an educational tour. Several days in Beijing, then flying to Xian and then a flight to Shanghai. Please give us your honest answer when considering the current condition of Beijing with the flooding and air port delays and people stranded at the air port. We appreciate your immediate response. Thank you.