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Carbon intensity gap surged to a new high of 63% for transatlantic carriers in 2017

Updated study shows fuel efficiency improving an average of 1% per year since 2014, less than industry goal. A study released today by the International Council on Clean Transportation (ICCT)found...
Published 2018.09.11: News

Transatlantic airline fuel efficiency ranking, 2017

This report compares the fuel efficiency of 20 airlines operating nonstop flights between the mainland United States and Europe. It uses the same methodology as in the 2016 transpacific fuel...
Published 2018.09.11: Publication

ICAO’s CORSIA scheme provides a weak nudge for in-sector carbon reductions

The International Civil Aviation Organization (ICAO) has not yet figured out how to decarbonize jet fuels. Under the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA),...ICAO's Carbon Offsetting and Reduction Scheme for International Aviation will probably not provide a meaningful framework to transition to alternative jet fuels.
Published 2018.08.06: Blog Post

Beyond road vehicles: Survey of zero-emission technology options across the transport sector

This working paper discusses the potential of zero-emission technologies to reduce emissions from non-road transport, including aviation, maritime, off-road, and rail. These modes represent a quarter...
Published 2018.07.18: Publication

Environmental performance of emerging supersonic transport aircraft

This paper provides a preliminary assessment of the environmental performance of new commercial supersonic transport aircraft (SST). Three U.S.-based startup companies are working to develop new SSTs...
Published 2018.07.17: Publication

Reviving supersonic flight would likely have significant harmful environmental consequences, new analysis shows

New supersonic aircraft could burn 5 to 7 times more fuel than standard aircraft and exceed CO2 emission limits by 70% The re-introduction of supersonic transport aircraft (SST) into commercial...
Published 2018.07.17: News

Yes, your mother loves the flowers, but maybe not the cost of flying them in

Twice a year, at Valentine’s Day and Mother’s Day, newspapers in the U.S. often print articles informing the public where their flowers come from. While the main purpose of these stories may be to...Around Mother’s Day, media outlets often publish articles about where the flowers we buy often originate and the extraordinary efforts taken to transport them to the U.S. How much jet fuel is burned...
Published 2018.05.09: Blog Post

ICAO, why can’t you be a bit more like your sister?

Arguably, the biggest climate news so far in 2018 is the International Maritime Organization, or IMO, finally adopting a global climate framework for international shipping. In doing so, it joined...IMO and ICAO, the sister UN agencies governing international shipping and aviation, have both struck global deals on greenhouse gas emissions. But why, oh why ICAO, can’t you be more like your sister...
Published 2018.05.02: Blog Post

Did the Delta and United exit from the Persian Gulf have any effect on the market’s fuel efficiency?

In the first quarter of 2016, both Delta Air Lines and United Airlines ended all flights from the U.S. to the Persian Gulf. Delta stated that they terminated their Atlanta-Dubai route because it was...With the exit of Delta and United from the Persian Gulf market, one would expect that there was some impact on the market’s average fuel efficiency. But, is it due to a less diverse mix of aircraft,...
Published 2018.04.24: Blog Post

Policy and Environmental Implications of Using HEFA+ for Aviation

The aviation sector must confront rapidly increasing greenhouse gas (GHG) emissions and ambitious decarbonization targets. Alternative jet fuels (AJFs) could be route to decarbonizing this sector,...
Published 2018.03.21: Publication

Does it matter to your carbon footprint whether you're flying across the Atlantic or the Pacific?

In 2015, the ICCT released a white paper comparing the fuel efficiency of 20 major airlines operating in the transatlantic market-specifically, nonstop passenger flights between North America and...Two recent ICCT studies on the fuel efficiency of airlines revealed different gaps between the most and least efficient airlines operating transatlantic and transpacific routes. Could this be due to...
Published 2018.03.05: Blog Post

Size matters for aircraft fuel efficiency. Just not in the way that you think.

In our recent transpacific airline ranking, we assessed and compared the fuel efficiency of the top 20 airlines operating flights between the U.S., East Asia, and Oceana.  One interesting finding was...One might assume that the larger the plane, the more fuel-efficient it is per passenger due to economies of scale. But in the case of flights over the Pacific, conventional wisdom turns out to be...
Published 2018.02.27: Blog Post

One weird trick to improve airline efficiency - gain belly weight!

In our recent transpacific airline fuel-efficiency ranking, we quantified the passenger-based fuel efficiency of 20 airlines after correcting for cargo carried on passenger flights ("belly freight...Would ICCT's recent transpacific fuel efficiency ranking change if dedicated freighters were taken into account? Did the rankings incorrectly reward airlines for carrying belly freight when putting...
Published 2018.02.22: Blog Post

Transpacific airline fuel efficiency ranking, 2016

This report compares the fuel efficiency of 20 airlines operating nonstop flights between the mainland United States and East Asia and Oceania. It extends the previous transatlantic fuel efficiency...
Published 2018.01.16: Publication

Hainan and ANA operate the most fuel-efficient transpacific flights

New study ranking 20 carriers shows 64% gap between leaders and least efficient Qantas Hainan Airlines and All Nippon Airways (ANA) ranked first in overall fuel efficiency among transpacific...
Published 2018.01.16: News

Canada-U.S. transborder airline fuel-efficiency ranking

More than 27 million passengers flew between the United States and Canada in 2016, and this number is expected to double in two decades. Despite regulatory efforts to curb aviation emissions,...
Published 2017.12.27: Publication

U.S. domestic airline fuel efficiency ranking, 2015–2016

Following in the footsteps of the 2010–2014 airline rankings, this study ranks U.S. domestic air carriers by their overall fuel efficiency for the years 2015 and 2016. The analysis continues the use...
Published 2017.12.14: Publication

Profits and carbon emissions surge for U.S. domestic airlines

Low fuel prices and high travel demand undercut overall fuel-efficiency gains in aircraft operations in 2015 and 2016, study finds Annual fuel-efficiency ranking of domestic carriers shows Alaska...
Published 2017.12.14: News

Delta should double down on CSeries, fuel savings

Many of us in the aviation field are in serious need of an airsickness bag, given the turbulence we’ve experienced recently over the Bombardier CSeries. That’s the new aircraft developed by the...Bombardier's new aircraft is mired in trade disputes, and that's creating some uncertainty over Delta Air Lines' order for 75 CS100 planes. But if Delta keeps its eye on the fuel savings it will reap...
Published 2017.11.17: Blog Post

Alternative jet fuels: Case study of commercial-scale deployment

Several airlines around the globe have conducted or participated in pilot projects to demonstrate the feasibility of using alternative jet fuel (AJF) on regular flights. However, most of these...
Published 2017.10.24: Publication

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