The most interesting deal of the week is one that did not happen. United Airlines (UAL), on the hunt for a megadeal, last year approached Delta Air Lines (DAL) about a merger that would have combined the two most valuable U.S. carriers, according to people familiar with the matter. As part of the pitch, United Chief Executive Scott Kirby made a call to Delta CEO Ed Bastian. Delta leaders discussed the approach and the merits of a potential deal as part of preliminary consideration. Nothing came of it.
The size of the thing that was contemplated
A merger between United and Delta — two of the world’s biggest airlines — would have had wide-ranging implications for airline competition and consumers, and would likely have faced scrutiny from antitrust enforcers and state attorneys general. The scale is easy to miss: last year, United and Delta together accounted for over 90% of the industry’s profits. As of Friday, Delta had a market valuation of about $56 billion and United’s market value was around $38 billion.
The two are among four giants that have come to dominate the U.S. airline industry after a series of mergers over the past two decades. Industry officials have long believed that any merger between those particular carriers would be impossible on antitrust grounds — though the reporting notes the calculation might look different during a second Trump administration.
Kirby’s appetite, on the record
The outreach, which had not previously been reported, underscores Kirby’s appetite for taking big swings in pursuit of his global ambitions for United. His later attempt to engage in merger talks with American Airlines, which American rebuffed, became public earlier this year after Bloomberg reported that Kirby had floated the idea in a meeting with President Trump. Lawmakers raised concerns that the tie-up could harm travelers; Trump said he didn’t like the idea; and American CEO Robert Isom blasted it as “anticompetitive.”
Kirby has framed his interest as growth rather than retrenchment. “In the past, airline mergers usually have been about two struggling airlines coming together to cut costs, flights and head count. My aspirations could not be more different,” he wrote in a statement in April about the American proposal. But without a willing partner, Kirby said in May that he doesn’t see United participating in industry consolidation in the foreseeable future, and he has denied interest in acquiring JetBlue. He has said he has little appetite for smaller mergers.
Bastian’s position is the mirror image. He has said there could be consolidation among struggling smaller players, but that it isn’t something Delta is looking to pursue. Kirby has made no secret of his respect for Delta, which has spent years upending the conventional airline wisdom that customers care mostly about finding the cheapest seat that works in their schedules; its focus on the travel experience has given premium travelers a reason to be loyal and made Delta the most profitable U.S. carrier. That strategy helped inspire United’s own transformation.
Why fuel is in this story
High fuel prices, which are currently rattling the industry, have previously been a catalyst for airline shake-ups. That is the piece worth carrying forward. The week’s oil tape was a war story — a barrel that fell from $89.31 to $82.61 when Washington paused strikes on Iran — but a fuel curve that moves ten dollars in five sessions is also an input cost that makes scale look more attractive to a management team staring at a five-year plan.
That is what makes this a cycle signal rather than a deal story. Managements hunt for scale when organic growth gets harder and input costs get less predictable. Delta walking away tells you the premium on offer was not irresistible — and that the more profitable of the two saw no reason to buy a problem.
An airline merger between the top two carriers would face antitrust review even in a permissive administration, and Delta walking away tells you the premium wasn’t irresistible. The read for the book is not the deal that didn’t happen — it is that managements are behaving late-cycle: hunting for scale because organic growth is getting harder. We own the airlines only inside broad index sleeves and that does not change. Action: WATCH UAL and DAL for what a revived approach would say about industry pricing power; no direct position. The aerospace names we do own — the makers, not the flyers — get their story in Part II.
United (UAL) · Delta (DAL) · Boeing (BA)
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