I had questions about the FirstClass seating/size on AmericaWest. Found=20 their Airbus comfortable but very cramped on the B737. Their schedules now=20= show a=20 B757-200 from PHX to BOS so I asked the seat size and actually got an almost= =20 immediate response (doesnt happen with many other carriers) Thank you for visiting americawest.com. The First Class seating on our Boeing 757 aircraft measures 20 inches=20 wide by 18 inches deep.=A0 On our Airbus aircraft, it measures 24 inches=20 wide by 20 inches deep.