Hello Heidi!
Thanks for visiting Disney Parks Moms Panel.
Disney's Magical Express is such a convenient and comfortable — and complimentary! — transportation service, and we always make a point to add a Disney's Magical Express reservation to our travel plans for our Walt Disney World vacations. Riding Disney's Magical Express always helps us feel like we're stepping into the Walt Disney World Resort vacation magic almost as soon as we step off the plane after arrival.
Disney's Magical Express will transport Guests from Orlando International Airport (MCO) to their Walt Disney World Resort hotels. I do know that Allegiant offers flights into Orlando Sanford International Airport (SFB). If you're flying into Orlando Sanford International Airport for your Walt Disney World Resort vacation, you'll want to look at renting a car, using a ride sharing service, or taking one of the taxis or shuttles that you can see listed on the airport's website.
I can share that on a previous Walt Disney World vacation, my family flew into Orlando Sanford International Airport on Allegiant and took an Uber ride share to the Walt Disney World Resort hotel, and took a taxi back to the airport on departure day. For us, personally, we prefer the simplicity and service of riding Disney's Magical Express from Orlando International Airport to our Walt Disney World Resort hotel.
Heidi, here's wishing you a wonderful Walt Disney World vacation. No matter how you arrive, you'll have lots of magic awaiting you.
Enjoy your Disney!
Jerry