When booking domestic travel, you should purchase the most economical transportation and lodging.
Domestic travel is defined as travel within the lower 48 U.S. states, also known as CONUS, or continental United States. In general, you will be on the right track if you do everything possible to ensure the optimal use of university funds. There are three types of business travel expenses that can be reimbursed by the university:
Transportation: Transportation expenses should be reimbursed for the most economical mode of travel on the most commonly traveled route consistent with the authorized purpose of the trip.
Subsistence: Charges for lodging and meals & incidental expenses (M&IE) must be ordinary and necessary to accomplish the official business purpose of the trip.
Miscellaneous: Expenses that fall into neither the transportation nor subsistence categories but are ordinary and necessary to accomplish the official business purpose of the trip.