TL;DR
Allegiant and Sun Country have officially merged, forming a larger leisure airline. Both brands will operate separately for up to two years, with plans to unify under Allegiant’s name by 2028. The deal enhances their market position and expands route networks.
Leisure airlines Allegiant Air and Sun Country Airlines have officially merged in a deal valued at approximately $1.5 billion, with the merger closing on May 13, 2026. Both brands will continue to operate independently until they are unified under the Allegiant name, expected by May 2028. This consolidation significantly boosts their market presence and route offerings, making the combined entity the eighth largest U.S. airline by seat capacity.
The merger, finalized on May 13, 2026, involves Allegiant acquiring Sun Country, with both airlines maintaining separate brands and loyalty programs until a full integration by 2028. The combined fleet totals 195 aircraft, serving nearly 175 cities across the U.S., with Sun Country’s hub at Minneapolis-St. Paul International Airport now the largest base for the new airline. Allegiant’s headquarters remains in Las Vegas, with the airline expanding its reach into air cargo and charter services, including Amazon Prime Air.
Gregory Anderson, CEO of Allegiant, stated that the merger marks a pivotal moment, emphasizing the goal of providing more affordable, reliable, and convenient travel options to communities. The deal also consolidates Allegiant’s position as a major player in the leisure travel market, following industry consolidation trends. The airlines plan to complete brand unification within 18-24 months, with full integration expected by May 2028.
Why It Matters
This merger is significant because it creates a larger, more competitive leisure airline that can offer expanded routes and services across the U.S. It enhances Allegiant’s market share, making it the eighth largest U.S. airline by seats, and reflects ongoing industry consolidation driven by competitive pressures and market opportunities. For travelers, this could mean more destinations, potentially better prices, and increased service options in the leisure travel segment.

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Background
The airline industry has seen increased merger activity recently, with rumors of potential deals involving major carriers like United, American, and JetBlue. The collapse of Spirit Airlines in early May 2026 also intensified industry consolidation discussions. Allegiant and Sun Country’s merger is part of this broader trend, aiming to strengthen their position amid a competitive landscape that includes both legacy carriers and other low-cost airlines.
Sun Country’s base at MSP has become the largest for the combined airline, and the deal includes Sun Country’s air cargo operations, notably serving Amazon Prime Air. The industry’s ongoing consolidation is influenced by regulatory, market, and economic factors, with some analysts suggesting more mergers could follow in the next few years.
“Today marks a defining moment in Allegiant’s history as we officially join forces with Sun Country to create the leading leisure-focused airline in the United States.”
— Gregory Anderson, CEO of Allegiant

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What Remains Unclear
It is still unclear how quickly the brands will fully integrate their operations and loyalty programs, or if there will be any immediate changes to routes, pricing, or service levels. Details about potential future branding or operational restructuring remain to be announced.

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What’s Next
The airlines plan to complete the full brand unification within 18-24 months, aiming for a single identity by May 2028. In the meantime, travelers can expect continued separate branding and loyalty programs. The airlines will likely communicate further details about operational integration, route adjustments, and branding strategies as the transition progresses.

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Key Questions
Will there be immediate changes to flights or routes after the merger?
There are no immediate changes planned. Both airlines will operate separately until they unify under the Allegiant brand, which is expected to happen within 18-24 months.
How will the merger affect loyalty programs?
Allegiant Allways Rewards and Sun Country Rewards will continue to operate separately until they are combined, which is planned to occur alongside the brand unification by May 2028.
What does this mean for travelers in terms of destinations?
The merger expands the combined airline’s route network, offering more destinations and options for leisure travelers, especially from Sun Country’s hub at Minneapolis-St. Paul and Allegiant’s bases.
Are there plans for further airline mergers in the industry?
Industry insiders suggest more consolidation may occur, especially given recent industry rumors and the collapse of Spirit Airlines, but no specific deals have been announced beyond this merger.