In January, Allegiant announced it was acquiring Sun Country in a transaction expected to close as early as May 13, 2026. The combination will form the leading, leisure-focused U.S. airline that is expected to expand affordable, convenient service to more vacation destinations domestically and internationally.

After closing, the combined company will operate under the Allegiant name. The airlines will continue operating separately until receiving a single operating certificate from the FAA. There is expected to be no immediate change to ticketing or schedules, and customers can continue to book their flights through allegiant.com and suncountry.com.

Strategically, the combination brings together complementary route networks – Allegiant's focus on small and mid-sized markets and Sun Country's presence in larger cities – creating more than 650 routes (551 Allegiant routes and 105 Sun Country routes) and connecting Minneapolis–St. Paul to additional mid-sized markets while expanding nonstop access to popular leisure destinations.

The combined airline also adds broader international reach by leveraging Sun Country's service across Mexico, Central America, Canada, and the Caribbean, providing Allegiant customers access to 18 international destinations. The combined company will be headquartered in Las Vegas while maintaining a significant presence in Minneapolis–St. Paul.

Allegiant Travel Company also announced the anticipated structure of its Board of Directors following the acquisition of Sun Country Airlines. Upon closing, the Allegiant Board will expand from eight to eleven members with Jude Bricker, Jennifer Vogel and Thomas Kennedy, all current Sun Country Board members, to join Allegiant's Board at that time.

"This combination marks a major achievement for both Allegiant and Sun Country, and we look forward to the Allegiant leadership team guiding the company forward," said Maurice J. Gallagher, Allegiant's founder and Board Chairman. He added, "The addition of Jude Bricker, Jennifer Vogel, and Thomas Kennedy to our Board reflects the governance structure established for the combined company in the Merger Agreement, and brings to the Allegiant Board even greater expertise in airlines, finance and corporate leadership that will benefit the shareholders, employees and customers of the combined companies."