Absolutely! Regular resort check-out time is 11:00am. You will be able to store your luggage with the Bell Services desk until you are ready for your Magical Express bus. Additionally, depending on which airline you are flying, you may want to utilize the Resort Airline Check-In Service. This option is available on most airlines and it enables you to check your luggage through to your home airport right from your Disney hotel.
I hope this helps and that you have a wonderful vacation!