A forward concave trapezoidal seating system and methods are presented. Trapezoidal seats comprise a front side smaller than a rear side. The trapezoidal seats are aligned in a forward arc from a straight seat to a most-angled seat. A straight side of the straight seat is configured to substantially align with a center line of an aircraft fuselage. A most-angled side of the most-angled seat is angled inboard relative to the straight side, and the most-angled seat is outboard of the straight seat. A side unit is coupled to the most-angled side and supports the trapezoidal seats.