Air Per Diem is a calculator based on Airport code to search for Lodging and Meals & Incidentals allowances. This is useful for government employees, aircrew, pilots and flight staff who travel for work. This tool is helpful to accurately calculate your per diem deductions.
Data sources:
CONUS:
http://www.gsa.gov/portal/content/103168
OCONUS:
http://www.defensetravel.dod.mil/site/perdiemFiles.cfm