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Table 5. Domestic Scheduled Airline Travel on U.S. Airlines, 2017-2018

Annual
20172018Change %
Passengers (in millions)741.7777.94.9
Flights (in thousands)8,177.68,391.42.6
Revenue Passenger Miles (in billions)684.2721.25.4
Available Seat-Miles (in billions)809.1854.05.5
Load Factor*84.684.5-0.1
Flight Stage Length**710.0721.01.5
Passenger Trip Length***922.5927.10.5
Notes: 
* Change in load factor points
** The average non-stop distance flown per departure in miles
*** The average distance flown per passenger in miles
Percentage changes based on numbers prior to rounding.
Source: 

Bureau of Transportation Statistics, T-100 Domestic Market and Segment