Flight
MCI is probably the closest and best airport to fly into. It's about 1 hour and 45 minutes drive to Sedalia.
Flight
Kansas City airport is the closest to Sedalia and yet check out the Springfield-Branson airport for an alternative airport. If flying into Springfield and have an extra day to spend, consider checking out the sights and sound theater for the Christmas show. The shows the sights and sound theater put on are spectacular.