Most airlines are racing to put Starlink on their planes. Delta isn't, and that single choice has turned into one of the loudest fights in aviation this week.
The carrier picked Amazon's Leo satellite network instead, and Elon Musk is taking it personally.
Delta said in March it would bring Amazon Leo - Amazon's low-Earth-orbit satellite internet network, formerly known as Project Kuiper - to 500 of its planes starting in 2028.
Musk responded on X this week, saying Starlink demands no login portal and that Delta's branded Sync experience was the sticking point. His verdict: "Delta wanted to make it painful, difficult and expensive for their customers. Hard to see how that is a winning strategy."
After Delta pushed back on the claim, Musk fired off again on X late Thursday, posting: "They will lose customers over this."
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A Delta spokesperson told Business Insider the assertion is "not accurate." The airline said Amazon met its technical bar and that the Sync portal would still have worked through Starlink.
There's a reason Delta wants its own portal. Sync is the airline's tie-in to SkyMiles and its branded in-flight digital experience.
AWS has been Delta's preferred cloud provider since 2022, which made Amazon a natural connectivity partner.
United already runs Starlink through its MileagePlus login, and Qatar Airways has wrestled with the same trade-off on its long-haul routes.
The bottom line: For Delta, owning that screen matters more than getting the fastest connection on the market.
United is installing Starlink across its entire fleet by the end of 2027, while Delta's Amazon Leo install doesn't begin until 2028. That gap matters when fast, free in-flight WiFi can shift loyalty in minutes.
Musk has now picked a fight with both Ryanair's CEO and Delta this year alone, after a dayslong X war with Michael O'Leary in January. The hardware race is one thing - the branding war is the bigger story.
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