Will you be picking up a rental car? If not call or email the hotel, not the 800 phone number, and find out how late the airport shuttle bus runs. I'm not sure about Econonlodge but several of the budget hotels don't offer a 24 hour airport shuttle. A ten dollar cab ride will wipe out much of your savings.
Many of us are just as happy using PL for a 3* hotel. The winning "bids" seem to be around $50 and all the 3* hotels offer a complimentary 24 hour shuttles.