Table 3: Quarter-to-Quarter Changes in the Air Travel Price Index (ATPI) for the Latest Five Quarters,, "(U.S.-Origin Itineraries, First Quarter 1995 = 100) Quarter-to-Quarter changes may be affected by seasonal factors",, Quarter and Year,ATPI,Percentage Change from Previous Quarter Third Quarter 2003,105.5,-0.3 Fourth Quarter 2003,106.6,1.0 First Quarter 2004,108.6,1.9 Second Quarter 2004,106.2,-2.2 Third Quarter 2004,102.5,-3.5 Source: BTS - Based on calculations using data from the BTS Passenger Origin and Destination (O&D) Survey,, ,, ,, ,, ,, ,, ,, ,,