Life essentials is a dealer for several different types of mobility scooters.
Solex Transformer, shown in pictures, can take you to your airplane seat, then it folds up like a suitcase for being stowed. This scooter weighs approx. 50#. Has an airplane-certified lithium battery.
Trikaroo Mobility Scooters have several models to choose from. Trikaroo Flyer XL folds in half for easy storing, the seat can be set up as a single rider or a two-seater.