In a press release, Allegiant and Sun Country Airlines have announced a definitive merger agreement under which Allegiant will acquire Sun Country in a combined cash and share transaction valuing the airline at approximately US$1.5 billion.

Sun Country is the 10th largest U.S. airline by passengers carried, with about 3,000 employees, operating around 44 passenger and 20 freighter aircraft (as of early 2025) serving ~100 airports and 120 routes.

Many of Sun Country Airlines routes have gates in midwest and western cities, opening up the Gulf Shores gates to new travelers.

The press release further stated "The combination will create a leading leisure-focused U.S. airline, expanding service to more popular vacation destinations across the United States, as well as international destinations, and providing more people with access to affordable, convenient air travel."

The combined airlines will service a combined 22 million annual flyers.

Allegiant will continue to be the publicly held parent company and the combined company will continue under the Allegiant name. However, each airline will operate separately until the airline operations obtain a single operating certificate from the FAA which consolidates the airlines' operations, procedures, and safety protocols into one framework. There will be no immediate impact to ticketing, flight schedules, and travel experience, or the Sun Country brand, and customers can continue to book and fly with Allegiant and with Sun Country as they do today.