A family is suing Delta Air Lines and one of its partner airlines, claiming they were bitten by bed bugs during an international flight to Europe. An experience they say was made worse by how flight attendants handled the situation. According to the lawsuit, filed Dec. 18 in Virginia, the family’s trip began without issue on March 21, when they boarded a Delta flight from Roanoke, Va., to Atlanta. From there, they connected to a flight to Amsterdam operated by Dutch airline KLM, which was booked through Delta. About two hours into the transatlantic flight, the lawsuit says Mrs. Garcia began feeling like bugs were crawling on her skin and that she was being bitten. The complaint includes photos that appear to show bugs on her sweater and on an airline napkin. Images of bite marks on the family, including their children, are also included in the filing. The parents say they and their children were bitten during the flight. The lawsuit states that when Mrs. Garcia and Dr. Albuquerque...