Jakarta : Malaysia Airlines Berhad (MAB) and Singapore Airlines (SIA) confirmed the formalization of their joint business partnership following the Civil Aviation Authority of Malaysia's (CAAM) approval in January 2026 and the approval by the Competition and Consumer Commission of Singapore in July 2025.

The approvals enable MAB and SIA to begin work progressively on deepening their commercial partnership, enhancing connectivity, and offering greater flexibility for customers travelling between Malaysia and Singapore.

Potential initiatives include revenue-sharing flights between the two countries, joint fare products, coordinated flight schedules, and joint corporate travel arrangements across both markets.

Since signing their agreement in October 2019, MAB and SIA said to have progressively expanded their codeshare arrangements. Today, SIA codeshares on Malaysia Airlines' services between Kuala Lumpur and Singapore, London (Heathrow), and 15 domestic destinations within Malaysia. MAB codeshares on SIA's services between Singapore and Kuala Lumpur and Penang in Malaysia, as well as between Singapore and Barcelona, Brussels, Cape Town, Copenhagen, Istanbul, Johannesburg, London (Heathrow), Rome, and Zurich.

In February 2024, both carriers introduced reciprocal cross-participation between their frequent flyer programs, allowing members to earn Enrich points and KrisFlyer miles on selected flights operated by the airlines.