Translink
(http://translink.bc.ca/) has only thin coverage of langley, but it exists. bus #502 travels every 15 minutes from surrey centre a transfer point for skytrain from downtown vancouver to langley centre, a bus hub in the town. twice an hour, bus #502 continues south-eastwards past langley municipal airport and on to aldergrove. route and schedule details on the translink web site.
Langley Municipal Airport (CYNJ)
A small general-aviation airport with a 2100'x75' runway.