Main airports
Kuala Lumpur International Airport (KLIA, KUL) is the country's main gateway. Operator Malaysia Airports Holdings (MAHB) reported that KLIA handled 63.3 million passengers in 2025, up 10.8% year-on-year. Across MAHB's 39 Malaysian airports the 2025 total was 104.4 million passengers. KLIA has a Terminal 1 and a Terminal 2 (KLIA T2).
Other busy airports, with December 2025 monthly figures from MAHB:
- Kota Kinabalu (BKI): 802,000 passengers, the gateway to Sabah.
- Penang (PEN): 772,000 passengers.
- Kuching (KCH): 540,000 passengers, serving Sarawak.
- Langkawi (LGK): 290,000 passengers, mainly an island leisure airport.
- Subang (SZB): 191,000 passengers, a smaller Kuala Lumpur-area airport that now also has international services, such as Hong Kong Express from Hong Kong in 2025.
Which airport for which airline
Kuala Lumpur has two airports: KLIA (Sepang) and Subang (SZB). Most international and domestic services use KLIA, but Subang has its own routes, so check the airport code on a booking: KUL means KLIA, SZB means Subang.
Within KLIA, airlines use different terminals. Malaysia Airlines, AirAsia, AirAsia X, Batik Air Malaysia and Firefly are all based in Malaysia, but they do not all use the same terminal. For example, Greater Bay Airlines' Hong Kong charters in 2026 used KLIA Terminal 2. Always check the terminal on the booking confirmation or the airline's website before leaving for the airport.
Traps to avoid:
- Booking separate tickets with a tight connection between airlines, which can mean a terminal change and a new check-in.
- Assuming a Kuala Lumpur flight uses KLIA when the code shows SZB.
Getting between airports and into the city
KLIA is in Sepang, well outside Kuala Lumpur, so allow generous time for the journey into the city, especially at peak hours. Subang is a separate airport; there is no airside link with KLIA, so moving between them means leaving one airport and travelling by road. Check current options and journey times with the airport operator, Malaysia Airports.
- Use official airport transport counters or licensed ride-hailing and taxi services rather than touts.
- If connecting between terminals at KLIA on separate tickets, leave extra time for collecting bags and checking in again.
- Confirm the terminal for your return flight before arranging a transfer.
Airlines: full-service and low-cost
Malaysia Airlines is the national full-service carrier. Batik Air Malaysia is a hybrid operator that added six new routes in December 2025, including Osaka and Singapore. AirAsia (short-haul) and AirAsia X (long-haul) are low-cost, and Firefly operates a regional and domestic network.
Malaysia Airlines, AirAsia, Batik Air and Firefly increased frequencies to Kuching, Johor Bahru, Tawau and Sibu in early 2026. MAHB says 75 carriers served Malaysia by Q3 2025, including Chinese airlines such as China Southern, China Eastern, Xiamen Airlines and Air China.
On low-cost carriers, check what the base fare includes: checked baggage, seat selection, meals and payment fees are commonly sold as extras. Compare the total with a full-service fare before booking, and read the baggage allowance on the airline's own site.
Lounges
Lounge access at KLIA depends on the terminal and the airline. Full-service passengers in business or first class, and frequent-flyer members with the right status, can use their airline's lounges. Travellers without status can look at pay-per-entry lounges or lounge membership cards such as Priority Pass, where accepted. Check the lounge operators' own sites for current prices, opening hours and terminal location, as these change.
Low-cost passengers have no airline lounge entitlement, but some independent lounges sell day passes. Book ahead in peak periods, as lounges can fill during the Christmas and New Year peak, when KLIA handled more than one million passengers in three days (across MAHB's network).
When to fly
The busiest period for flights is Christmas and New Year. December 2025 was MAHB's busiest month, with 10 million passengers across Malaysian airports. Festive travel also pushed traffic up in early 2026, when airlines added domestic frequencies to Kuching, Johor Bahru, Tawau and Sibu.
2026 is Visit Malaysia year, which may raise demand across the calendar. Book early for Christmas, New Year, major religious festivals and school holidays, and expect busy airport check-in at these times.
For weather, thunderstorms and monsoon rain can delay flights. Check the Malaysian Meteorological Department (met.gov.my) and Tourism Malaysia (malaysia.travel) for current seasonal forecasts and holiday dates.
