The Jazzy Ultra Light by Pride Mobility is a folding power chair offered with a choice of two batteries, and the larger one roughly doubles the range. It is 33 lb bare, 38 or 40 lb with the battery in depending which you choose, and it carries 300 lb either way.
The seat is 18 inches wide, the widest on our folding wall, the drive tyres are flat free so there is nothing to puncture and nothing to pump up, and the joystick is programmable to suit how you drive. One caution before you book a flight. Pride's product page calls the small battery airline compliant, but they publish no watt hour figure for it anywhere, so there is nothing on paper for an airline to accept. Ask your airline first and get the answer in writing. Every published specification is set out further down the page, taken from Pride's own brochure.
