United-American mega deal could raise fares and face antitrust roadblock

A United Airlines jetliner sits at a gate along the A concourse of Denver International Airport, March 20, 2026, in Denver. (AP Photo/David Zalubowski, File)

A potential deal between United Airlines and American Airlines will create an industry behemoth and invite extraordinary scrutiny from regulators, labor unions and consumer advocates, all wary of higher fares and reduced competition.

United Airlines CEO Scott Kirby floated a potential merger of the two carriers to U.S. President Donald Trump in late February, according to two sources familiar with the matter, but industry officials were quick to highlight the formidable antitrust obstacles such a deal would face.

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The details of Kirby’s proposal were not immediately clear. Shares of both carriers rose in early trading on Tuesday, even as airline stocks remained under pressure from higher oil prices linked to the war between Israel and Iran, which has threatened travel demand.

“This seems hopeless to me. There are huge overlaps on a number of routes and in various metropolitan areas (such as Chicago). No amount of divestitures would fix it.” said William Kovacic, director of the competition law center at George Washington University.

American shares rose five per cent in premarket trading, as investors viewed a potential deal as a rare bright spot for a carrier that has struggled in recent quarters to deliver consistent profits and bring costs under control. United shares were up about two per cent before the bell.

American has been trying to close the gap with rivals Delta Air Lines and United Airlines, which have pulled ahead by capitalizing on strong demand for premium travel and better tailoring their products to shifts in the market.

For United, a deal of this scale could provide the step‑change in capacity and market share it would need to establish a clear lead over rival Delta Air Lines, which has long dominated the industry in profitability and premium revenue.

“A United-American deal would reduce the ‘Big 4’to a ‘Big 3’ with one dominant player. There would likely be competitive issues in many city-pair routes and hubs,” said antitrust lawyer Andre Barlow with DBM Law Group.

“I am not sure this deal can get done. The Trump administration is concerned about affordability issues and this deal would reduce choices and give the airlines more pricing power, which means higher fees for consumers so I would think this would get a rigorous review.”

Since the U.S.-Israeli war with Iran began in late February, shares of both airlines have slid as the conflict sent jet fuel prices sharply higher, with American down 14.1% and United off 10.4 per cent.

Airlines and industry executives have warned that a prolonged period of elevated fuel costs could reshape the sector by squeezing margins, limiting capacity growth and increasing pressure on financially weaker carriers.

Kirby raised the merger idea during a Feb. 25 White House meeting focused on the future of Washington Dulles International Airport, three days before the conflict began, sources told Reuters.

He argued that a combined airline would be better positioned to compete internationally, where foreign carriers account for a majority of long-haul seat capacity to and from the United States, despite U.S. citizens making up most of those travelers.

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Industry officials and antitrust experts said any attempt to win approval would face steep hurdles, citing concerns about competition, higher fares, job losses and significant route overlap in a U.S. airline market already dominated by four major carriers.

United and American did not immediately respond to requests for comment on the antitrust implications of the potential merger.

Top global airlines ranked by capacity https://tmsnrt.rs/4cpwGNN

(Reporting by Shivansh Tiwary and Rashika Singh in Bengaluru, Jody Godoy in New York; Editing by Harikrishnan Nair and Tasim Zahid)