Spirit Airlines is the company with most consumer complaints

New report from the Department of Transportation shows that Spirit Airlines was in 2015 the carrier with worst on-time arrival and the most consumer complaints records in the US

Data released on last Thursday indicated that 11.73 out of every 100.000 customers who used Spirit Airlines in 2015 had a complaint related to the company's services. The figures are alarming, as the industry's overall complaint rate is 1.9 per 100.000 fliers.

Out of 2.069 complaints filed by passengers using Spirit air transportation services, most of them were related to flight problems. Reservation, ticketing, boarding and baggage problems were other reasons clients complained about.

The negative scores of the company can perhaps be explained by the fact that Spirit expanded its services with 10 new destinations last year and CEO Ben Baldanza was replaced, creating considerable amounts of pressure on the carrier.

Spirit Airlines representatives haven't commented the released numbers in any way, despite CNBC's repeated requests.

Carriers do not score well regarding general data either. When compared to the previous year, the overall complaint rate for airlines went up by 47 per cent in 2015.