Senai International Airport (IATA: JHB, ICAO: WMKJ), officially known as Sultan Ismail International Airport (Malay: Lapangan Terbang Antarabangsa Sultan Ismail), is an airport located in the town of Senai, near Johor Bahru, Malaysia. The airport is the secondary hub for Firely.Opened in 1974, it serves the state of Johor as well as people from the southern states of Peninsular Malaysia. Senai International Airport used to be hubs of AirAsia and used to serve as a domestic hub of Malaysia Airlines until the rationalisation of its domestic routes to cut the company's losses. As a result, Malaysia Airlines only served two destinations from Senai after the rationalisation.

Today, this airport is managed by Senai Airport Terminal Services Sdn Bhd (SATS), the first independent airport operator in Malaysia, after taking over the operations of the airport from Malaysia Airports Holdings Berhad (MAHB) in 2003. Senai International Airport is able to handle up to 4.5 million passengers and 100,000 tonnes of cargo per annum. There are plans to increase the capacity of the airport to 10 million passengers in the long term and turn the airport into a cargo hub. Recent expansions and upgrades include lengthening of the runway to 3800m and building a parallel taxiway to increase runway capacity.