Unions Clear Google's $10 Million Spirit Airlines Data Sale

Google's $10 million bid for Spirit Airlines' internal data — 500 million Microsoft Teams chats, 100 million emails and other documents — cleared a decisive privacy hurdle this week when aviation unions withdrew their objections in bankruptcy court.

The Association of Flight Attendants said Tuesday that, together with other unions, it had reached an agreement with Google to protect the personal data of former Spirit staff. The union called the deal "an historic win for worker privacy protections."

Spirit shut down on May 2, 2026, and its assets went to auction. Google won the bidding, paying $10 million for a trove that includes half a billion Teams messages plus a hundred million emails. Google has said the data would help improve its products and AI models. That framing raises an obvious question. What does an airline's internal chatter actually teach a language model? Operational logistics, customer-service exchanges, corporate workflows — the texture of a large enterprise at work. Google gets scale; former employees get exposure. The unions noticed.

What held the sale up?

Privacy, mainly. The sale stalled in bankruptcy court over concerns about the personal details of Spirit staff and customers held in the archive. The stakes were concrete: the data covered people who never consented to their workplace conversations becoming training material.

The pressure wasn't only from unions. Last month, 121 members of Congress, led by Sen. Elizabeth Warren, raised concerns about the transaction. A court-appointed privacy ombudsman reviewed the deal and recommended approval — but only after personal information about 97 million Spirit customers was carved out of the sale.

Then, on Monday night, aviation unions and public-interest groups withdrew their objections after striking the employee-data deal with Google.

What did the unions win?

The exclusions are specific, which matters. Vague privacy promises age badly; enumerated categories don't. Under the agreement:

• Employee medical and disability history is excluded
• Drug and alcohol testing records are excluded
• Payroll records are excluded
• Additional employee categories the AFA did not enumerate are also covered

Beyond the carve-outs, the union said it secured a more rigorous de-identification process than previously planned, and Google is prohibited from attempting to reidentify the data. That last clause is the one to watch. De-identification is only as strong as the ban on reversing it — and enforcement of such bans, years after a bankruptcy estate dissolves, remains an open question. Neither the AFA nor Google has said who audits the process or what remedies exist if the prohibition is breached.

Sara Nelson, international president of the AFA-CWA, put the broader stakes plainly. "Worker data privacy in the age of AI has become a whole new worker's rights issue," she said.

"Without our union, there would have been no one to speak for workers in this fire sale of their private information," Nelson added. "We fought and we won brand new protections."

She signaled the fight extends past this case: "Now we will take this issue to all of our employers to secure contractual protections, and demand lawmakers protect workers everywhere through federal and state law."

What has Google said?

Google did not immediately respond to a request for comment. Last month, the company told Reuters it was "not looking to buy any personal information from Spirit."

"The information will either be completely excluded or will be de-identified by an independent third party before Google receives any data," the company said.

Note the structure of that promise. An independent third party handles de-identification before the data reaches Google — consistent with the ombudsman's conditions and the union's negotiated terms. But Google's statement predates the union deal, and the company has not publicly detailed how the stricter process the AFA describes differs from its original plan.

The withdrawal of union objections clears the path for the sale to close, though final approval still rests with the bankruptcy court. Whatever the ruling, the precedent is set: a defunct carrier's internal communications can be sold as AI training material for $10 million, and the privacy terms will be negotiated by whoever shows up to object. In Spirit's case, that was unions, 121 legislators and an ombudsman — and the protections they won now form the template Nelson intends to take to every employer table, and to Congress, next.