The Allegiant-Sun Country Merger Has Closed: Here’s What Travelers Need To Know

If there’s one thing most of us didn’t have on our 2026 bingo cards, it was Allegiant acquiring Sun Country. The merger has largely flown under the radar, but it officially closed ahead of schedule on May 13, 2026. While details about what the combined airline will look like are still fairly thin, the deal will have big implications for both carriers’ loyalty programs and, by extension, their co-b