Federal Regulators Fast Track Low-Cost Carrier Merger

Allegiant Travel Company's $1.5 billion acquisition of Sun Country Airlines gets early DOJ clearance.

Mar. 16, 2026 at 11:00pm

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In a surprise move, the U.S. Department of Justice granted early clearance for Allegiant Travel Company's proposed $1.5 billion acquisition of Sun Country Airlines. The merger aims to create a hybrid aviation powerhouse, combining Allegiant's "niche-market-to-vacation-spot" model with Sun Country's diversified revenue streams including charter and cargo operations.

Why it matters

This deal signals a shift in the DOJ's stance on airline consolidation, after previously blocking the JetBlue-Spirit merger. The combined Allegiant-Sun Country entity is expected to generate $140 million in annual synergies and serve 175 airports across the U.S., Mexico, and the Caribbean, potentially reshaping the low-cost carrier landscape.

The details

The DOJ's early termination of the Hart-Scott-Rodino (HSR) Act waiting period indicates it sees no immediate antitrust concerns with the merger, as Allegiant and Sun Country operate highly complementary networks with minimal direct competition. The combined airline is expected to operate a simplified, Boeing-heavy fleet of 195 aircraft.

  • The merger was first announced in January 2026.
  • The DOJ granted early clearance on March 16, 2026.
  • The airlines now expect the transaction to close as early as the second or third quarter of 2026.

The players

Allegiant Travel Company

An American ultra-low-cost carrier known for its "niche-market-to-vacation-spot" model.

Sun Country Airlines

A diversified airline with a robust charter business and high-margin cargo operations, including serving Amazon.

Greg Anderson

The CEO of Allegiant Travel Company.

U.S. Department of Justice (DOJ)

The federal agency that granted early clearance for the Allegiant-Sun Country merger, signaling a shift in its stance on airline consolidation.

U.S. Department of Transportation (DOT)

The federal agency that still needs to approve the merger, along with a final shareholder vote.

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What they’re saying

“We are pleased to receive U.S. antitrust clearance from the Department of Justice. We remain confident that this combination will deliver meaningful benefits for our customers, team members and the communities we serve. Together, Allegiant and Sun Country will create a stronger leisure-focused airline, offering a broader network, more travel options and increasing long-term value creation for our shareholders.”

— Greg Anderson, CEO, Allegiant Travel Company (Joint statement)

What’s next

The deal still requires the blessing of the U.S. Department of Transportation (DOT) and a final vote from the shareholders of both companies. However, with the DOJ's early clearance, the timeline has been accelerated, and the airlines now expect the transaction to close as early as the second or third quarter of 2026.

The takeaway

This merger could serve as a blueprint for future low-cost carrier consolidation, as the combined Allegiant-Sun Country entity appears better insulated against the volatility of the domestic leisure market by diversifying into cargo operations and focusing on non-competitive routes.