Environment

in Fact sheets

Carbon emissions

Direct (Scope 1) Emissions
2017in metric tons CO2e 2016in metric tons CO2e 2015in metric tons CO2e
Direct (Scope 1) emissions 32,425,313 31,447,052 31,446,166
Aircraft (jet fuel) 32,269,841 31,282,902 31,279,288
Aircraft (biofuel) 3,822 10,237 0
Vehicles (diesel, gasoline, CNG, LPG) 69,084 78,196 78,315
Facilities (natural gas combustion, engine test cells) 79,169 72,486 88,563
Dry ice from catering 3,397 3,231 Not reported
Intensity ratio (Scope 1+2 metric tons CO2e/1000 RTMs 1.317 1.348 1.372
Indirect (Scope 2) emissions
2017in metric tons CO2e 2016in metric tons CO2e 2015in metric tons CO2e
Indirect (Scope 2) emissions 235,794 291,543 283,499
Electricity consumption 235,794 291,543 283,499
Other Indirect (Scope 3) Emissions
2017in metric tons CO2e 2016in metric tons CO2e 2015in metric tons CO2e
Other Indirect (Scope 3) emissions 6,078,739 6,268,793 6,474,314
Regional jet fuel 5,977,955 6,157,267 6,472,504
Vehicles (diesel, gasoline, CNG, LPG) 1,789 1,847 1,809
Ownership stakes in other companies 98,996 109,678 Not reported

Local air quality

NOx Emissions
2017in tons NOx 2016in tons NOx 2015in tons NOx
NOx emissions 15,074 17,881 13,139
Mainline aircraft (jet fuel) 14,143 16,823 11,988
Vehicles (diesel, gasoline, CNG, LPG) 814 946 1,022
Facilities (Natural gas combustion, engine test cells) 117 111 129
SO2 emissions
2017in tons SO2 2016in tons SO2 2015in tons SO2
SO2 emissions 1,367 1,598 1,173
Mainline aircraft (jet fuel) 1,366 1,597 1,172
Facilities (Natural gas combustion, engine test cells) 1 1 1
CO emissions
2017in tons CO 2016in tons CO 2015in tons CO
CO emissions 9,414 11,034 9,164
Mainline aircraft (jet fuel) 7,478 9,058 6,370
Vehicles (diesel, gasoline, CNG, LPG) 1,875 1,918 2,724
Facilities (Natural gas combustion, engine test cells) 60 58 70
Waste management
2017in metric tons 2016in metric tons 2015in metric tons
Waste – total 61,260 41,786 43,756
Hazardous and non-hazardous waste generation 34,148 16,729
Catering – Municipal waste 27,112 25,057
Hazardous Moved to new category Moved to new category 2,565
Non-hazardous/other waste Moved to new category Moved to new category 41,191
Recycling – total 9,176 7,302 14,942
Non-Catering – recycled 5,487 4,093 12,840
Catering – recycled 3,689 3,209 2,102
Water consumption
2017in millions of gallons 2016in millions of gallons 2015in millions of gallons
Billed water consumption1 528 453 343
Energy consumption
2017 2016 2015
Electricity (MWh) 543,632 616,396 561,586
Aircraft (Mainline jet fuel – millions of gallons) 3,356 3,261 3,216
Natural gas (MM BTUs) 1,401,566 1,279,545 1,579,085
Other
2017 2016 2015
Revenue Ton-Miles (RTMs — millions)2 24,796 23,540 23,133
CO2e/1,000 RTMs2 1.317 1.348 1.372
Footnotes:
  1. Does not account for all United locations or locations shared with other businesses (e.g., terminals)
  2. Scope 1+2 emissions/Mainline RTMs; metric used for tracking progress against industry goal of 1.5%/year efficiency improvement

Footnotes