Crossword clues for Signal up in the air 5 lettersAnswerClueALERTAir-raid signalALERTAir raid signal, e.g.SIRENAir raid signal.FLARESignal up in the airFLAREDistress signal shot into the airBEEPERSAir signal devicesRADARBLIPSSignals for air traffic controllersALLCLEARSignal after an air raid
