The Graceland Shuttle Service is your best option for direct transport back to campus; however if your schedule does not coincide then public transportation is a possible option.
Remember to allow for travel time between the airport and bus station/terminal. Before going to the bus station, be sure you arrive at the bus station in time to catch the last bus to Lamoni.
Do not stay all night at either bus station. It is safer to stay at the airport or ideally a hotel and then go to the bus station in time for the bus the next day.
The stop for Jefferson Bus Lines in Lamoni is at the Sale Barn parking lot on Main street (across from American State Bank).
It is always best to plan ahead and verify phone numbers, times and fees, as they are subject to change.