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Table 11. Domestic Load Factor on U.S. Airlines, Seasonally-Adjusted, March 2017

Domestic RPMs/ASMs (both seasonally-adjusted) in percent, Scheduled service only

2014201520162017
January85.384.085.184.4
February85.085.184.583.7
March85.085.183.484.4
April84.684.384.7
May84.984.385.2
June84.484.885.0
July84.685.084.3
August84.485.383.5
September84.285.284.9
October83.685.985.1
November84.084.785.1
December84.085.784.6
Notes: 

 Load factor is a measure of the use of aircraft capacity that compares Revenue Passenger-Miles (RPMs) as a proportion of Available Seat-Miles (ASMs).

Source: 

Bureau of Transportation Statistics, T-100 Segment