RIO DE JANEIRO, June 9 : Global airlines' push to attract premium customers is making fast in-flight Wi-Fi an increasingly important perk, turning a once-patchy paid service into an emerging battleground between Elon Musk's Starlink and Jeff Bezos' Amazon Leo satellite network.Starlink, which operates around two-thirds of all satellites in space and is the major driver of revenue for SpaceX, has signed up 11 new airline customers globally so far in 2026, after 22 in 2025 and eight in 2024, compared with three in 2022, according to Valour Consultancy, an aviation intelligence firm.Amazon, which is still building out its Leo satellite constellation, faces a potential setback after a Blue Origin rocket failure last month. It has signed up its first customers, securing deals with Delta Air Lines and JetBlue Airways.Installing Starlink or Amazon's satellite broadband is a significant investment for airlines, running into the hundreds of millions of dollars for large fleets. But as carriers increasingly rely on premium products to boost margins, they are likely to commit more heavily in the coming years, said Decius Valmorbida, president of travel at Amadeus, a travel technology company, describing the technology as a "game changer."