Allegiant Air offers-hour refund policy”, which allows you to receive a full refund if you cancel within hours of booking Allegiant Air Customers can cancel within hours of booking for a full refund or The cheapest days to fly on ???????????????????????????????????? Airlines are generally Tuesdays, Wednesdays, and Saturdays These days typically have lower demand, which results in reduced Airfare prices compared to peak travel days like Fridays and Sundays