This is a python script which takes a single csv file with all airline flight information as input and produces a data set with no character elements along with lookups between factor levels and numeric values.
This file creates a single csv file from the Airline on-time arrival data called AirlineDataAll.csv from 1987.csv.bz2 through 2008.csv.bz2. The flight information for individual years can be found at the Data Expo web site.