QUICK ANSWER
Malaysia Airports publishes a free 24/7 inter-terminal shuttle.
01
Frequency matters
The published frequency is every 15 minutes, but your usable connection includes walking, waiting and airline process time too.
02
Separate tickets still change the risk
A free shuttle does not remove baggage, check-in or missed-connection issues.
✓
Sources and verification
Time-sensitive airport, airline, visa, security and transport details should always be confirmed with the relevant official source before travel.