I couldn’t find anything on their Web site.
I checked Google Maps on a whim for a friend who was going to Omaha, and found a blue USPS collection box outside the ticket counters between the Frontier and American Airlines signs. There’s a crosswalk to the parking garage directly by the collection boxes.
Note: use the blue box for letters and postcards; don’t use the FedEx box!
Last Updated 22 November 2021