Disclosed is a flight simulation apparatus. According to the flight simulation apparatus of the present disclosure, first left and right rails and second left and right rails slide along a pair of first front and rear rails and a pair of second front and rear rails so that first and second seats can freely move forward and rearward, first and second auxiliary rails are formed to position the first and second seats at various locations in the front-rear direction, and the first and second seats can be stably supported by first and second sliders.