The Most Common Traveler Complaints About Allegiant Air – Islands

Allegiant Air is an ultra-low-cost airline carrier that is built on connecting smaller, underserved airports with popular vacation spots, typically at incredibly low base fares. Nonetheless, Allegiant — somewhat surprisingly — has the best budget airline frequent flier program of 2026, so some vacationers turn to this carrier repeatedly.

For example, Allegiant competitor Frontier Airlines has a laundry list of common complaints from travelers.