Advancing UK Aerospace, Defence, Security & Space Solutions Worldwide
  • Home
  • /
  • Aerospace
  • /
  • Cirium reveals global 2021 flights burnt 40% less fuel

Aerospace

Cirium reveals global 2021 flights burnt 40% less fuel

Aviation analytics company, Cirium, today launched its Global Aircraft Emissions Monitor, providing a highly accurate measure of CO2 emissions and fuel consumption from flights flown globally.

Image courtesy Cirium

New insights from Cirium show that airlines have burnt 40% less fuel from flights in 2021 year-to-date compared to the same period in 2019.

The reduction in flight-produced carbon emissions is attributed to the drop in flights worldwide because of the dramatic impact that COVID-19 had on air travel.
Flights tracked year-to-date are 29% down versus 2019.

Advertisement
ODU RT

The fuel burn has increased as domestic and international flights have started to return but not as much as expected compared to 2019 - before the pandemic. Airlines have been flying their aircraft far fewer hours and prioritising the most efficient.

Jeremy Bowen, Cirium CEO, said: “To achieve the aggressive targets for aviation to reach net zero emissions by 2050, a thorough understanding is needed of all elements of an aircraft used for flights and the exact flight operations.

“Cirium’s Global Aircraft Emissions Monitor boasts data of the highest quality and validity.

“The need for greater sustainability is clear and Cirium is committed to supporting the industry’s decision-making based on accurate carbon emissions tracking.”

The uniqueness of the Monitor derives from the data, which is obtained from the widest and deepest data warehouse in the aviation industry. No other independent source can provide calculations based on the same blended data sets.

The Monitor’s custom data calculations are based on hundreds of flight and aircraft variables for maximum accuracy.

These variables include actual flight and taxi times, cabin configuration, aircraft operating empty weight, assumed cargo tonnage, aircraft/engine type, winglet equipage, aircraft age and more.

Tests conducted on the Global Aircraft Emissions Monitor have validated its accuracy to within 1%.  

Advertisement
ODU RT

The Global Aircraft Emissions Monitor includes customised options for CO2 emissions and fuel consumption. It applies complete profiles of actual flights and aircraft, which are fused with block fuel burn models.

While aviation has reduced its emissions overall this year, travel is recovering, with Cirium forecasts projecting for global recovery to 2019 levels potentially by 2023.
 
Cirium’s Fleet Forecast also predicts that based on the flight capacity of the increasing fleet to be in service by 2039, fuel burn may reach 485 million tons.

This equates to 1,530 million tons of CO2 emissions, excluding any initiatives for Sustainable Aviation Fuels (SAF) or offsetting.

Carbon emissions and fuel consumption from flights are increasingly becoming the centre focus for all airlines, airports, aviation finance, aircraft manufacturers, air traffic management, government and fuel providers.

The comprehensiveness of the Cirium Global Aircraft Emissions Monitor will enable organisations to track emissions as a measure of efficiency. It will also enable a greater understanding of the aspects of total cost of ownership, the profile of a current operator, climate impact, benchmark the competition and create fuel demand models.
 

 

Advertisement
Hexagon leaderboard
Hexagon releases NCSIMUL upgrade

Aerospace Defence

Hexagon releases NCSIMUL upgrade

19 May 2026

Hexagon’s Production Software Division has announced the latest release of NCSIMUL, strengthening its integrated approach to NC programme verification, simulation and optimisation with a new Selective Simulation capability.

ATI launches tech strategy to double value of UK aerospace

Aerospace

ATI launches tech strategy to double value of UK aerospace

19 May 2026

The Aerospace Technology Institute (ATI) has today launched the latest UK technology strategy targeting a generational prize of doubling the UK aerospace sector's market value to $18 billion (£13.44bn) by 2035 and increasing by over four times, to $41 billion (£30.6bn), by 2050.

Aviation operational gains offset by industry growth

Aerospace

Aviation operational gains offset by industry growth

18 May 2026

Analysis from aviation intelligence company IBA, has found that global aviation carbon intensity improved from 860 gCO₂ per revenue tonne-kilometre (RTK) in 2018 to 690 gCO₂/RTK by September 2025 - an efficiency improvement of 20% - but that flight activity growth is offsetting those operational gains.

Egis appoints Shakir Khaja to drive UK and Ireland airport growth

Aerospace

Egis appoints Shakir Khaja to drive UK and Ireland airport growth

18 May 2026

Architecture, engineering and consulting firm Egis has appointed Shakir Khaja as Aviation Sector Director for Europe and Africa, to oversee the firm’s expansion across the airport sector, with a strategic focus on the UK, Ireland and wider European market.

Advertisement
ODU RT
Stansted celebrates UK Airports Health & Safety Week

Aerospace Events

Stansted celebrates UK Airports Health & Safety Week

15 May 2026

Teams from right across London Stansted have come together this week to mark UK Airports Health & Safety Week 2026, with a wide ranging programme of events focused on keeping people safe at work and supporting health and wellbeing.

West of England residents back Bristol Airport expansion

Aerospace

West of England residents back Bristol Airport expansion

15 May 2026

A YouGov poll of people in the West of England has found that twice as many support the expansion of Bristol Airport’s capacity than oppose.

Advertisement
ODU RT
Advertisement
General Atomics LB