Drayton Manor made a pre-tax loss of £255,000 in the year to 28 February 2015, accounts show.
The period, which covers the 2014 season, is a return to the red following a £1.2 million profit the previous year.
The latest turnover figures remained broadly in line with the previous year, at £23 million.
Pre-tax losses at the park’s hotels was almost £826,000 in the year to 28 February 2015, following on from the £745,000 loss made in the previous 12 months.
2014 saw the addition of the Air Race ride, whose budget was a reported £1.2 million.