Vueling's Airbus A319 seats 144 passengers in a single Economy class configuration. However, Vueling does offer a few seats that feature added comfort for those who are willing to pay a little extra.
XL Seats in row 10 provide passengers with extra legroom and are available for an additional 10 euros.
Seats in the first row of the plane are Excellence seats and can only be reserved with Excellence Fare. These seats have greater legroom.
Basic Seats cost 2 euros on domestic flights and 3 euros on international flights, allowing you to choose from the remainder of available seats.