KLIA - (Kuala Lumpur International Airport) is the main terminal for all regular flights.
KLIA2 - new airport for budget airlines (Air Asia, Malindo, Tiger etc.), located next to KLIA, opened in May 2014 replacing LCCT
KL Sentral - Main Transportation Hub in Kuala Lumpur, Train Station
Pudu Sentral - Main Bus Terminal in KL city center
TBS - Main Bus Terminal for south-bound buses, (located south of city center)

FROM Kuala Lumpur KLIA1:

TAXI

travel time to downtown KL: ca. 1h
RM 75 during normal hours
RM 10 surcharge if taxi pickup between 12midnight - 6am
most hostels and hotel will help to book a taxi

BUS

travel time to downtown KL: ca. 1h

Bus from KL Sentral
Airport Coach
ticket price: RM10 (child: RM6), runs once every hour
5am - 12 midnight
contact no: 03-87873894 / 03-87768449

Bus from Pudu Sentral (Puduraya)
Star Shuttle
ticket price: RM10 (RM18 for a drop-off right at your hotel)
tickets available at counter 21
operating hours: 6.45am - 3.45am
Contact No: +6017-373 1288 / +6017-331-2988
Star Shuttle website

Bus from TBS (Terminal Bersepadu Selatan)
Jetbus
ticket price: RM10 (travel time about 1h)
operating hours: 3am - 11pm
For Enquiries and Customer Service: +6(019) - 221 6763 (Mon - Fri : 9am - 5pm)
Hotline: +6(017) - 583 8255 (24 Hours)
Jetbus website

Buy Bus Ticket online:
Kuala Lumpur - KLIA
Johor Bahru - KLIA
Ipoh - KLIA
Sitiawan - KLIA
Teluk Intan - KLIA
 

Express Train

KLIA Express from KL Sentral
travel time: approx. 28 minutes
ticket price: RM55 (child RM25)
operating hours: 5am -1am
contact: +603 2267 8000 (Mon - Fri 08:30am -6pm)
KLIA Express website

tip: With a KLIA Express ticket you can check-in your luggage up until 2 hours before your flight from KLIA if you fly with one of these airlines:
Malaysia Airlines, Royal Brunei, Cathey Pacific, Emirates, Etihad Airways
more information

FROM Kuala Lumpur to KLIA2

Taxi

travel time to downtown KL: ca. 1h
RM 75 during normal hours
RM 10 surcharge if taxi pickup between 12midnight - 6am
most hostels and hotel will help to book a taxi

Bus

travel time to downtown KL: ca. 1h15min
currently available bus services: Skybus, Starshuttle, Aerobus, Airport Liner, Jetbus, Transnasional, Yoyo Bus, Starmart

Bus from KL Sentral
Skybus
ticket price: RM10
operating hours: 3.00am - 10pm
contact:
+6(016)-217 6950 – Weekdays (Mo - Fri  9am - 7pm)
+6(016)-217 8496 – Weekends & Public holidays (9am - 7pm)
Skybus website

Bus from Pudu Sentral ( Puduraya)
Star Shuttle
ticket price: RM10
operating hours: 3.45am - 11.15pm
Contact No: 03-40438811
Star Shuttle website

Bus from TBS (Terminal Bersepadu Selatan)
Jetbus
ticket price: RM10 (travel time about 1h15min)
operating hours: 3am - 11pm
For Enquiries and Customer Service: +6(019) - 221 6763 (Mon - Fri : 9am - 5pm)
Hotline: +6(017) - 583 8255 (24 Hours)
Jetbus website

Buy Bus Ticket online:
Genting Highlands - KLIA2
Kuala Lumpur - KLIA2
Johor Bahru - KLIA2
Ipoh - KLIA2
Sitiawan - KLIA2
Teluk Intan - KLIA2

Express Train

KLIA Express from KL Sentral
travel time: approx. 33 minutes
ticket price: RM55 (child RM25)
operating hours: 5am -1am
contact: +603 2267 8000 (Mon - Fri 08:30am -6pm)
KLIA Express website