• call to action on September 27


    On September 27th, we are asking our government officials to act on aviation emissions at the start of the ICAO Assembly. Support the #Flight4Climate by posting the message below on social media.

    Post this message on September 27

    I support a robust aviation climate agreement at #ICAOA39 & I’m asking my government to JOIN NOW!

    Tag your government official in your post to let them know you want them to act on aviation emissions at the ICAO Assembly.

  • thank you for joining FLIGHTPATH 1.5

    Follow us during #ICAOA39 as as we monitor and communicate progress on the ground at the Assembly in real time. For more information on aviations impact on climate change click here.



  • FlightPath 1.5 is a global campaign of leading environmental voices dedicated to cutting aviation climate pollution and ensuring that aviation contributes its fair share to the goal of limiting the global temperature increase to 1.5° Celsius above pre-industrial levels. The campaign is spearheaded by the International Coalition for Sustainable Aviation, the official civil society observer to the UN International Civil Aviation Organization.

  • Aviation & Climate Change

    Aviation is a top-ten global polluter. The time for action on aviation is now.

    If aviation were a country, it would be the 7th largest in terms of greenhouse gas emissions. If no action is taken, climate change pollution from aviation is forecasted to triple by 2050.


    Adoption of the global market-based measure would be a historic step for aviation, and the world’s first cap on the carbon pollution of an entire global industry sector.

    The International Civil Aviation Organization (ICAO), the United Nations body charged with regulating aviation's emissions, will decide on a market-based measure to regulate the airline industry in 2016. If ICAO fails to take bold steps, its Assembly won’t meet again until 2019 – a big setback in the race to cap and cut dangerous climate pollution.

    Aviation has a huge "emissions gap” – shown in red – about 7.8 billion tonnes of carbon pollution that international aviation will have to deal with to meet its own climate goals, let alone the kinds of reductions that will be needed if the sector is to bring emissions down to the dashed red arrow, along the lines of the Paris Climate Agreement.

    “Source: ICAO. “Overview of Environmental Work.” Singapore GLADs, 2015.”


    Want to Know More?

    Download the FlightPath 1.5 FAQ's

    This document covers all you need to know about the science and policy making aviation emissions the pivotal climate change issue of 2016.

    International Aviation's Link to Climate Change

    Download ICSA's Aviation Backgrounder

    This document provides background on the impact and regulation of international aviation emissions.  


    WHY 2016?


    In 2015, global leaders met in Paris at COP21 and pledged to cut climate pollution in order to keep global temperature increases well below 2°C while striving to limit that increase to 1.5°C.


    But international aviation was not mentioned in the Paris agreement, despite the fact that its emissions fall outside of national greenhouse gas targets, and therefore require specific action.


    The airline industry claims that, despite years of inaction, the UN’s Montreal-based International Civil Aviation Organization (ICAO) should be left to its own devices. As ICAO has set a deadline of October 7, 2016 for finalizing a global market-based measure (MBM) to cap net emissions from 2020 onwards, this year will be a key test for ICAO to prove that it can act on climate.


    So Montreal is in the global spotlight: ICAO’s 2016 Assembly will succeed – or fail – to take a crucial step in the global effort to avert dangerous, potentially catastrophic, climate shifts.


  • TOWARD 1.5

    A Global Market-Based Measure Starts Aviation on a Path to 1.5° Celsius.

    In 2015, global leaders agreed to a target of limiting a temperature increase to 1.5°C within the COP21 Paris Agreement. Scientists agree we must achieve this limit if we are to safeguard families and communities from the most severe impacts of climate change.


    ICAO can elect to cap net international aviation emissions from 2020 through carbon trading, a proven mechanism to reduce emissions.


    The carbon trading market will help lower emissions, and its ambition can be increased over time. Our goal is a transparent program with the highest environmental integrity, to ensure that even as the aviation industry grows, it does so with powerful requirements and incentives to drive carbon pollution down even more steeply in the future.


    To ensure that ICAO and its Member States adopt an agreement in line with the targets set in Paris, FlightPath 1.5, in partnership with the International Coalition for Sustainable Aviation (ICSA), has developed a checklist for an effective plan to cut aviation global warming pollution.

    ICSA's Checklist for an Effective Plan to Cut Aviation Global Warming Pollution

    Click the image to download

    Liste de vérification de l’ICSA pour un plan efficace de réduction de l’impact de l’aviation sur le réchauffement climatique de la planète


    Cliquez sur l'image pour télécharger

    La lista de requisitios de la coalición internacional (ICSA) para asegurar un plan efectivo para reducir la contribución al calentamiento global del sector aeronáutico


    Haga clic aquí para descargar

  • About Us

    FlightPath 1.5 is a global campaign of leading environmental voices, dedicated to cutting aviation climate pollution and ensuring that aviation contributes its fair share to the goal of limiting the global temperature increase to 1.5° C above pre-industrial levels.

    Aviation Environment Federation is the principal UK NGO campaigning exclusively on the environmental impacts of aviation and promoting a sustainable future for the sector.

    Carbon Market Watch scrutinizes carbon markets and advocates for fair and effective climate protection.

    Guided by science and economics, the Environmental Defense Fund finds practical and lasting solutions to the most serious environmental problems.

    The International Council on Clean Transportation is an independent, nonprofit organization founded to provide first-rate, unbiased research and technical and scientific analysis to environmental regulators.




    Transport & Environment’s mission is to promote, at the EU and global levels, a transport policy based on the principles of sustainable development.



    WWF has offices in more than 80 countries, employs around 6,200 full time staff and values the support of more than 5 million people. Our mission is to build a future in which humans live in harmony with nature.





  • Media

    For press inquiries, please email info@flightpath1point5.org

    After nearly 20 years of international negotiations, 191 countries are positioned to adopt a global market-based measure (GMBM) to address emissions growth from international aviation during a two-week aviation summit in Montreal from 27 September to 7 October, 2016.

    191 countries will vote on the future of aviation pollution on 27 September to 7 October at an ICAO Assembly meeting in Montreal. The latest text of the proposed aviation agreement was publicly released approximately one month ahead of the meeting. ICSA, the only civil society body officially accredited to observe the aviation proceedings, has strong reservations about a global market-based measure (GMBM) that would rely on a system of voluntary, unguaranteed participation with weak environmental safeguards.


    Click here to view the French version of this document.

    This autumn, the 191 countries in the International Civil Aviation Organization (ICAO) will meet in Montreal to decide how to tackle CO2 emissions from international flights. The proposal on the table is a global market-based measure (MBM) with the initial goal of capping net carbon emissions in the sector at 2020 levels (“carbon neutral growth from 2020” – CNG2020).

    The UN International Civil Aviation Organization (ICAO) has a deadline of 7 October 2016 to finalize a program to cap the net carbon pollution of international flights—a global market-based measure. The International Coalition for Sustainable Aviation (ICSA) works within ICAO to improve the environmental performance of aviation. The ICSA Progress Report on the ICAO MBM evaluates the most recent publicly available draft Assembly Resolution text of the global MBM against “ICSA’S Checklist for an Effective Plan to Cut Aviation Global Warming Pollution.”

    The Paris Agreement and the ICAO process to adopt effective climate measures are not separate. The Paris Agreement covers all anthropogenic emissions, sets out important principles on carbon markets, and sends a clear signal that the aviation sector must act.

    "MONTREAL – Divisions between nations over how to share the benefits and burdens of pollution cuts in the international aviation sector continue to threaten prospects for an agreement to limit these emissions, an environmental coalition said at the conclusion of a three-day High-level Meeting of the International Civil Aviation Organization (ICAO), the UN’s aviation agency..."

    "MONTREAL – Nations agreed in Paris in December 2015 to cut carbon pollution within their borders and pursue all efforts to limit increase in the global average temperature to 1.5 °C. But the Paris Agreement didn’t decide what to do about the pollution of airplanes flying between different countries - emissions which are not included in national targets..."

    "BRUSSELS | LONDON | MONTREAL | WASHINGTON D.C. – Prominent NGO’s and aviation experts will host a media call on May 9 to share information and insights about one of the defining global climate change issues of 2016: reducing greenhouse gas emissions in the airline industry. The call will identify critical gaps in a draft international aviation agreement being negotiated this week at the closed-door High Level Meeting (HLM) in Montreal..."

    "At the close of the Global Aviation Dialogues (GLADs), FlightPath 1.5 expressed concern that the current proposals for a global aviation climate deal fall far short of aviation’s fair share of effort towards the global climate goals world leaders agreed in Paris last December..."


    "Prominent evironmental organizations today launched FlightPath 1.5, an international campaign aimed at solving the defining global climate change issue of 2016: reducing greenhouse gas emissions in the airline industry..."