If going to KLIA - depends on where your location is - if at KL Sentral, then can take the ERL train, its the fastest for the fare to pay. Takes about 20 minutes only. If other locations, can try taxi la... but then the taxi drivers simply charge only and their driving is miserably bad... so check out on the taxi first before heading to airport. If going to LCCT from KL Sentral, its best to take the LCCT bus for a cheap fare and the ride takes about 1.5 hours with normal traffic jam.