Alaska Air Group has joined with energy producer Par Hawaii to invest in the development of sustainable aviation fuel produced in Hawaii, using locally grown agriculture feedstock. The group's subsidiaries Hawaiian Airlines and Alaska Airlines, together with Par Hawaii, will collaborate with Hawaii-based natural resource conservation firm Pono Pacific to research camelina as a multi-purpose crop that might be used as SAF feedstock. "Camelina represents a rare opportunity for Hawaii to build a true circular-economy model around renewable fuels," states Chris Bennett, Pono Pacific's vice-president of sustainable energy solutions. Hawaiian and Alaska are set to become Par Hawaii's launch SAF customers, with plans to take delivery of Hawaii's first locally produced SAF in early 2026. "As Hawaii's airline, we have a responsibility to reduce our environmental impact while continuing to provide essential air service that connects our communities and strengthens our economy," states Alanna James, sustainability innovation director for Hawaiian and Alaska. "Our company has a long-term strategy to reach net-zero carbon emissions, and sustainable aviation fuel is essential for us to get there."

Thai VietJet is planning for a listing on the Stock Exchange of Thailand (SET). The carrier is "entering an exciting phase of growth and preparing for IPO readiness", it states in a 16 December LinkedIn update, adding that it is hiring for that push. The new roles include a company secretariat executive and a managerial role for an internal auditor manager pegged to the IPO project. SET states that a company looking to list on the exchange must have a minimum shareholder equity of Bt800 million ($25.6 million) and be "in a stable and healthy financial condition and have sufficient working capital." It should also have a minimum combined operating net profit of Bt125 million in the last two or three years, with a minimum net profit of Bt75 million for the latest full year prior to the application, it details among other criteria. The VietJet subsidiary currently operates a fleet of 22 aircraft comprising nine Airbus A320ceos, six A321ceos and three Boeing 737 Max 8s, fleets data shows, while it has four A320ceos listed as stored. It also has 47 737 Max 8s on order, with six scheduled to arrive before the end of this year.

Delta Air Lines president Glen Hauenstein will retire from his role on 28 February, after which he will serve the US major as a strategic adviser through the end of 2026. Upon Hauenstein's retirement, Joe Esposito, senior vice-president network planning, pricing and revenue management, will be promoted to executive vice-president and chief commercial officer. In his new role, Esposito – who has served Delta for 35 years – will oversee network planning, revenue management, sales and loyalty for the Atlanta-based carrier. Hauenstein joined Delta in 2005. Delta notes that he led the team that changed the carrier's primarily domestic operation into a network "that connects the world". It adds: "Thanks to his leadership, Delta today flies to six continents, with extended reach through an array of joint-venture partnerships with world-class international carriers including Virgin Atlantic, Air France-KLM, LATAM, Aeromexico, Korean Air and others." Delta chief executive Ed Bastian states in a memo sent to airline employees that Hauenstein's "vision and strategic mindset have been essential in transforming Delta into the leading global airline we are today". Bastian goes on to say that he "could not have asked for a better co-pilot to help lead Delta in becoming the best-performing airline in the world". Hauenstein adds that he is "incredibly grateful for the opportunity to serve the people and customers of Delta over the past two decades".