What is the carbon footprint of aviation?

Commercial aviation emits approximately 1 billion tonnes of CO2 per year, representing about 2.5% of global CO2 emissions and around 3.5% of effective radiative forcing when non-CO2 effects (contrails, NOx) are included. With over 100,000 flights per day globally, aviation is one of the fastest-growing sources of carbon emissions. Data source: ICAO/IATA 2023.

How much CO2 does a flight produce?

A typical short-haul flight (e.g. London to Paris, ~350km) produces approximately 70–90 kg CO2 per passenger. A long-haul flight (e.g. London to New York, ~5,500km) produces approximately 500–600 kg CO2 per passenger in economy class. Business class roughly triples the footprint per passenger due to greater seat space. These figures use the ICAO Carbon Emissions Calculator methodology.

What is CORSIA and how does it work?

CORSIA (Carbon Offsetting and Reduction Scheme for International Aviation) is ICAO's global framework for carbon-neutral growth in international aviation. Airlines must offset emissions that exceed a 2019 baseline. From 2027, the scheme becomes mandatory for all international routes. Airlines purchase eligible carbon credits (including carbon removal credits) to demonstrate compliance. CORSIA is projected to offset 2.5 billion tonnes of CO2 between 2021 and 2035.

Can airlines reach net zero by 2050?

IATA's Net Zero 2050 roadmap projects aviation can reach net zero through a combination of Sustainable Aviation Fuels (SAF, ~65% of reductions), new aircraft technology (~13%), operational efficiencies (~3%), and carbon removal/offsetting (~19%). SAF currently costs 3–5× more than conventional jet fuel, making policy support and carbon pricing essential to scaling it. Airlines that lead on carbon reduction gain a regulatory compliance advantage as carbon pricing expands globally.

What is the carbon footprint per flight mile?

Commercial aviation averages approximately 90 grams of CO2 per passenger-kilometre (g CO2/pkm) across the global fleet. Premium cabins emit 2–4× more per passenger due to fewer seats per aircraft. Short-haul flights are typically less efficient per kilometre (~130–150 g CO2/pkm) than long-haul flights (~80–100 g CO2/pkm) because takeoff and climb phases consume disproportionate fuel.

How can airlines turn carbon compliance into a competitive advantage?

Airlines that proactively invest in carbon reduction — through SAF offtake agreements, efficiency upgrades, and verified carbon removal credits — can lock in lower compliance costs before CORSIA mandatory phases tighten in 2027–2035. Corporate travel buyers (GBTA surveys show 68% have emission reduction targets) increasingly prefer airlines with transparent carbon data. Verified carbon removal at a certified €100/tonne price point from Tao Climate allows airlines to offset remaining emissions while differentiating on sustainability.

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Aviation Carbon Intelligence

AirOS is a live aviation carbon intelligence dashboard.

Aviation emits ~1 billion tonnes of CO2 every year. The fix is a business opportunity.

Real data from ICAO, IATA, and the Global Carbon Project. Aviation is responsible for ~2.5% of global CO2 - and Tao Climate is helping the industry turn that liability into leadership.

Love Cleaner Skies

While you've been on this page

estimated tonnes of CO2 emitted globally by commercial aviation while you've been on this page

Linear estimate based on ICAO 2023 annual emissions data · ~1,040 Mt/yr ÷ 365 days ≈ 2.8 Mt/day (~32.4 t/sec) · commercial aviation only · not a live measurement

~1,200,000

Passengers in Air Now

estimated · ~4.5B/year

~14,200

Aircraft in Air Now

FlightAware estimate

~3,500

Active Airports

commercial · worldwide

~127

Participating States in CORSIA

ICAO CORSIA · 2024 first phase

Commercial aircraft taking off at sunset

Aviation Emissions - Live

Real-time estimate based on ICAO 2023 annual figure of 1,040 MtCO2/year

LIVE · ICAO

Flights Departed Today

commercial flights

~105,000/day · ~1.2/sec

CO2 / Second

tonnes/sec

Aviation only
ICAO 2023 data

Aviation CO2 Emitted Today

tonnes CO2

~2.85 Mt/day · 1.04 Gt/year

Aviation CO2 Emissions (MtCO2/year)

Recovery to pre-pandemic levels by 2023 · Source: ICAO, IATA

2019-2025

Transport Sector Emissions

Where aviation fits within global transport CO2 · Source: IPCC AR6

IPCC AR6

100,000+ flights

cross the sky every single day · IATA 2024

Per-Flight Carbon Reality

What every flight actually costs the atmosphere - before removal

ICAO · IATA

🛫

~255 kg

CO2 per passenger on a typical short-haul flight (1,000km)

ICAO Carbon Calculator · per seat, economy

🌏

~1.85t

CO2 per passenger on a long-haul transatlantic flight

ICAO CORSIA MRV methodology · economy class

📈

3-4%

Annual traffic growth forecast through 2040 (pre-pandemic trend resuming)

IATA 20-Year Air Passenger Forecast 2023

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<1%

SAF still accounts for less than 1% of global jet fuel use (IATA: ~0.3% in 2024, ~0.6-0.7% projected 2025)

IATA SAF Report 2024

🎯

Net Zero

Industry target for 2050 - requires radical action starting now

ICAO Long-Term Aspirational Goal (LTAG) 2022

💰

$150-250

Scenario modelling: potential carbon cost per tonne under CORSIA first phase (2024-2026) as eligible unit markets tighten

ICAO CORSIA Unit Eligibility · Tao Climate scenario modelling — not an ICAO/IATA published figure

Carbon Compliance is Accelerating

Regulation is tightening. The window to get ahead of it is now.

CORSIA · EU ETS

⚖️ Regulation

CORSIA

The Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA) is ICAO's international aviation emissions programme. The pilot phase ran 2021-2023; the first phase (2024-2026) applies to routes between ~127 voluntarily participating States, with further exemptions. Participation is currently voluntary for most States.

Applies to international routes between participating States
Growth above 2019 baseline must be compensated
Eligible unit market expected to tighten as demand grows
Compliance obligations vary by State jurisdiction

✈️ EU ETS

EU Emissions Trading Scheme

All flights within the EEA are covered by the EU ETS. From 2026, the maritime and aviation sectors face a significantly reduced free allocation - meaning more carbon must be purchased. EU allowance prices have reached €60-90/tonne.

Intra-EEA flights: 100% coverage since 2012
Free allowances being phased out 2024-2026
EU CRCF is establishing a framework for certified carbon removals, with potential implications for future market use.
Reporting complexity increasing every year

🌱 SAF Mandates

Sustainable Aviation Fuel

The EU ReFuelEU Aviation regulation mandates SAF blending: 2% by 2025, 6% by 2030, rising to 70% by 2050. SAF currently costs 3-5x conventional jet fuel. Carbon removal credits bridge the gap as SAF scales up.

EU: 2% SAF mandate from Jan 2025
UK SAF mandate: 10% by 2030
US SAF credits via Inflation Reduction Act
Production capacity still far below demand

💡 Tao Climate Analysis

Compliance → Revenue Centre

Airlines and airports that move early gain a structural cost advantage. Carbon removal at below-market prices, locked in now, becomes a competitive moat as compliance costs rise. Early movers also unlock premium pricing from climate-conscious passengers and corporate travel buyers.

This card reflects Tao Climate's commercial analysis and interpretation — not a regulatory statement from ICAO, IATA, or the EU ETS.

Lock in removal credits at current prices
Passenger-facing carbon programmes drive ticket revenue
Corporate travel buyers require verified removals
Net-zero claims require removal - not just reduction

Net Zero 2050

The runway is closing · act now

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Measure Your Flight's Carbon Footprint

Calculate the CO2 cost of any flight - and remove it entirely with Tao Climate. Takes 60 seconds.

This tool does not store or identify individual user data.

Calculate Now →

For Airlines & Airports

Turn carbon compliance from
a cost centre into a revenue centre.

Tao Climate works with airlines and airports to build carbon programmes that reduce compliance costs, open new revenue streams, and position you as the climate leader your passengers and partners are demanding.

CORSIA & EU ETS compliance

Passenger carbon programmes

Corporate travel buyer tools

Verified carbon removal (real, physical tonnes)

Real-time sustainability dashboards

White-label calculator integration

Explore Partnerships → 📩 Talk to the Team

Data Sources and Standards Referenced

ICAO CORSIA

EU ETS

IATA WATS