4AIR

What 4AIR does

4AIR is a private aviation sustainability solutions provider, founded in January 2021 and incubated by Directional Aviation. The company offers a four-tier rating framework (Bronze/Silver/Gold/Platinum) under which private aviation operators progress from carbon neutrality (100% CO2 offsetting) through emissions neutrality (300% offset covering non-CO2 impacts), to actual emissions reduction via Sustainable Aviation Fuel (SAF), to funding of aviation climate research through the Aviation Climate Fund. The platform also provides regulatory monitoring across 21+ international schemes, the Assure SAF Registry for chain-of-custody fuel tracking, an Interactive SAF Map covering 100+ worldwide locations, contrail analysis services, and APIs that integrate with flight planning software (ForeFlight, Leon Software) to automate emissions reporting.

The underlying technology stack combines a proprietary sustainability accounting and reporting platform with third-party registry integrations (Verra/VCS, American Carbon Registry, Climate Action Reserve, Gold Standard) for carbon credit verification. Revenue is generated through subscription-based rating programs (tiered Bronze through Platinum), transaction fees on carbon offset acquisitions and SAF credit facilitation, a $2 per mtCO2 contribution to the Aviation Climate Fund from Platinum-level clients, and recurring regulatory compliance service fees. Pricing is quote-based and tied to flight activity carbon footprint, fuel consumption, and aircraft count.

4AIR serves private jet owners, fractional providers, jet card and charter operators, Fixed-Base Operators (FBOs), aircraft management companies, aircraft OEMs (notably Textron Aviation), commercial airlines (including Southwest Airlines' SAF Beta Program), and selected nonprofits and events. Distribution is achieved through direct enterprise sales, OEM and FBO channel partnerships (Clay Lacy Aviation, Atlantic Aviation, Del Monte Aviation, George J. Priester Aviation), trade association partnerships (NBAA, NATA, CAA, IBAC, EBAA, IATA), and software integrations. By October 2025, the company had facilitated over 2 million carbon-neutral flight hours, offset more than 6.2 million metric tons of CO2, and documented the use of more than 20.2 million gallons of SAF.

Name

4AIR

Legal name

4AIR, LLC

Website

https://4air.aero

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

1–10 employees

Short description

4AIR provides a four-tier aviation sustainability rating system, carbon offset aggregation, Sustainable Aviation Fuel (SAF) tracking, and regulatory compliance services for private aviation operators, FBOs, OEMs, and commercial airlines, with over 2 million carbon-neutral flight hours facilitated since 2021.

Ownership category

akta.pro rank

Product category

Aviation Sustainability Services

NAICS

Environmental Consulting Services (541620)

akta.pro primary industry

Carbon Management (GHG accounting/MRV, targets, internal carbon pricing) (THABANAD)

akta.pro secondary industries

Sustainability & Emissions Management for Air Travel (SAF, CO2 Reporting) (THACAHAJ), Sustainable Customer Products & Programs (green fares, corporate SAF programs, transparency) (THABANAL)

Keywords

• Aviation sustainability
• Carbon offset services
• Sustainable aviation fuel
• Aviation emissions compliance
• Carbon footprint management

Headquarters

HQ city

Cleveland

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations, Others

Revenue model

1. Carbon Offset Credits: 4AIR acquires and retires verified carbon offset credits on behalf of clients. Clients purchase carbon offsets based on their flight activity carbon footprint (CO2 and/or full emissions depending on rating level). Credits are quantified and verified through registries including Verra (VCS), American Carbon Registry, Climate Action Reserve, and The Gold Standard. 4AIR retires offsets annually and provides proof of retirement.
2. Sustainable Aviation Fuel (SAF) Credits and Inventory Management: 4AIR facilitates SAF purchases and SAF credit (SAFc) trading representing one unblended gallon of SAF and its associated emissions reduction. Manages SAF inventory, tracks feedstocks and blends, calculates and allocates reductions, and supports book-and-claim systems. Revenue generated through facilitating transactions and premiums on SAF.
3. Aviation Climate Fund Contributions (Level 4): 4AIR Platinum/Climate Champion clients contribute $2 per metric ton of carbon footprint to the Aviation Climate Fund, a nonprofit supporting aviation sustainability research and development. All funds contributed (100%) are used to fund research and grants related to aviation and environmental sustainability. Contributions are non-refundable and commingled with other funds.
4. Subscription-Based Sustainability Programs: Operators subscribe to 4AIR rating programs (Bronze, Silver, Gold, Platinum) with recurring payment features. Subscriptions involve an initial and recurring payment obligation based on flight activity carbon footprint, fuel consumption, and desired sustainability level. Subscriptions can be terminated with 30 days written notice.
5. Regulatory Monitoring & Compliance Services: Turnkey compliance program helping operators monitor obligations to rapidly changing national and transnational aircraft emissions reporting requirements. Provides alerts when thresholds are triggered or aircraft are flown in reporting-required jurisdictions, along with full-service compliance package including documentation and reporting.

Pricing tiers

Go-to-market motion1 record

Distribution channels6 records

Marketing channels7 records

Core offering

4AIR provides verified, turnkey sustainability solutions specifically for private and business aviation, anchored by an industry-first four-tier rating framework (Bronze, Silver, Gold, Platinum) that enables operators to progress from carbon neutrality to emissions neutrality to actual emissions reduction and ultimately to funding aviation sustainability R&D. Its offering bundles verified carbon offset acquisition and retirement, Sustainable Aviation Fuel (SAF) inventory management and book-and-claim tracking through the Assure SAF Registry, regulatory compliance monitoring across 21+ international schemes, contrail analysis and monitoring, and ESG reporting with third-party verification.

Product overview

4AIR is an aviation sustainability platform offering a comprehensive suite of solutions for private and business aviation. The core product is the 4AIR Rating Program—a four-level framework (Bronze, Silver, Gold, Platinum) that enables operators to progress from carbon neutrality to emissions reduction to funding climate research. Supporting this are Carbon Offset Services, Sustainable Aviation Fuel (SAF) Services including the Assure SAF Registry for fuel tracking, the Aviation Climate Fund for R&D funding, Regulatory Monitoring & Compliance Programs, and analytical tools including an Interactive SAF Map, Carbon Calculators, Contrail Analysis, and PolicyWatch. The platform also provides APIs and data integrations with flight planning software for automated emissions reporting.

Differentiator

Problem solved

Functional benefit

Products and services

• 4AIR Rating Program Industry-first sustainability rating program for private/business aviation with four progressive levels (Bronze, Silver, Gold, Platinum) enabling operators to achieve carbon neutrality, emissions neutrality, actual emissions reduction, and to fund aviation sustainability R&D through verified offsets, SAF usage, and contributions to the Aviation Climate Fund.
• Carbon Offset Services Acquisition, retirement, and verification of carbon offset credits on behalf of clients through independent third-party registries including American Carbon Registry, Climate Action Reserve, Verra (VCS), and The Gold Standard. 4AIR retires offsets annually and provides proof of retirement.
• Sustainable Aviation Fuel (SAF) Services SAF inventory management, tracking, tracing, and allocation based on different feedstocks and blends, enabling verification and documentation of emissions reductions from SAF usage, including book-and-claim programs for operators.
• Assure SAF Registry A registry-based system for tracking and validating Sustainable Aviation Fuel from feedstock through end-use, ensuring chain-of-custody documentation, emissions reduction calculations, and CORSIA-compliant claims across fuel producers, suppliers, FBOs, and end-users.
• Regulatory Monitoring & Compliance Program Full-service compliance package monitoring environmental obligations and penalties across 21+ international regulatory schemes (CORSIA, EU ETS, ReFuelEU, etc.), providing automated alerts when thresholds are triggered and full reporting documentation.
• Aviation Climate Fund Nonprofit fund supporting aviation sustainability research and development, funded by contributions from 4AIR Platinum (Level 4) participants based on their carbon footprint; 100% of contributed funds are used to fund research and grants related to aviation and environmental sustainability.
• Contrail Analysis & Monitoring Service Business aviation's largest flight-by-flight contrail footprint analysis using weather-based contrail prediction models, identifying specific opportunities to mitigate contrails on every flight and laying groundwork for a contrail reporting service.

Quantifiable outcome

• Offset more than 6.2 million metric tons of CO2 and facilitated over 2 million carbon-neutral flight hours since November 2020
• +5 more outcomes

Named customers12 records

Segments7 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

AI capability3 records

Feature6 records

Partnerships

20 partnerships are on record, tiered minor and core.

• AerobilityminorStrategic or Co-development Partner · 14 May 2026Aerobility, a UK charity providing flight experiences for people with disabilities, received a Pipistrel Velis Electro electric aircraft from 4AIR as part of a 12-month sponsorship initiative. The partnership enables accessible flight training for beneficiaries including those with sensory impairments, demonstrating electric aviation's potential for reducing cost and emissions in accessible aviation training. The aircraft offers zero emissions and approximately £1.50 in electricity per 45-minute flight compared to hundreds of pounds for fuel-powered alternatives.
• Desert JetminorStrategic or Co-development Partner · 29 April 2026A partnership between Desert Jet and 4AIR was formed to collaborate on sustainability efforts, with 4AIR providing carbon offsetting and sustainability solutions for Desert Jet's operations.
• Western University (Ontario, Canada)coreStrategic or Co-development Partner · 14 April 20264AIR partnered with Western University to support the Global Meteor Network (GMN) Contrail Observation Project, which uses a network of over 1,000 meteor observation cameras and AI to identify and track contrails and match them to active flights. The research is funded through 4AIR's Aviation Climate Fund Platinum Level 4 program, where customers opt in to support contrail mitigation efforts. The initiative aims to improve contrail forecast accuracy and enable expanded mitigation trials through near real-time monitoring with better timeliness and resolution than satellites.
• National Business Aviation Association (NBAA)coreStrategic or Co-development Partner · 23 March 20264AIR and NBAA formed a strategic partnership on March 23, 2026 to expand and strengthen NBAA's Sustainable Flight Department Accreditation Program, which evaluates business aviation organizations on sustainability efforts. 4AIR provides technical oversight, industry data validation, and sustainability expertise to enhance the program's rigor and credibility while enabling NBAA to scale the initiative. This collaboration reflects the broader industry shift toward verified, data-driven sustainability strategies in business aviation's journey toward net-zero carbon emissions.
• Corporate Aircraft Association (CAA)coreChannel Partner/ Reseller/ Distributor · 13 January 2026The Corporate Aircraft Association formed a partnership with 4AIR giving CAA members discounted access to emissions monitoring services, regulatory compliance tools, and SAF options. Under the tie-up, 4AIR provides emissions tracking, offset options, and compliance support for general aviation operators. The partnership is part of CAA's broader effort to deliver value-driven benefits to its membership base, which includes operators seeking to reduce their environmental footprint.
• Leon SoftwarecoreTechnology or Integration · 19 December 2025Leon Software integrated with 4AIR to streamline sustainability and emissions reporting for aircraft operators. The integration enables automatic emissions data sharing, carbon footprint calculations, and regulatory compliance within Leon's flight management platform.
• Mission Aviation Fellowship International (MAF)minorStrategic or Co-development Partner · 12 November 2025Mission Aviation Fellowship International's fleet became carbon neutral through a partnership with Textron Aviation and 4AIR, with 4AIR providing the sustainability framework and carbon offset verification.
• George J. Priester AviationminorStrategic or Co-development Partner · 21 October 2025George J. Priester Aviation announced a partnership with 4AIR to support sustainability in aviation, with 4AIR providing carbon offset and sustainability solutions.
• Victor (On-demand Private Jet Charter Platform)minorStrategic or Co-development Partner · 1 October 2025Victor and 4AIR voluntarily published a contrails report disclosing the non-CO2 impact of on-demand private jet charters, demonstrating transparency and leadership in contrail impact disclosure for on-demand charter operations.
• ForeFlightcoreTechnology or Integration · 4 February 20254AIR announced an integration with ForeFlight for simplified regulatory compliance. The integration enables automatic emissions calculations and regulatory compliance within the ForeFlight flight planning platform, distributing 4AIR's sustainability capabilities directly to ForeFlight's user base of business aviation operators.
• Textron AviationcoreChannel Partner/ Reseller/ Distributor · 11 December 2023Textron Aviation launched the SustainableAdvantage carbon offset program for Cessna, Beechcraft, and Hawker owners, integrating 4AIR's sustainability framework. This OEM partnership embeds 4AIR's sustainability programs directly into aircraft ownership and management offerings, providing turnkey carbon offset programs to Textron's customer base.
• Atlantic AviationcoreStrategic or Co-development Partner · 7 February 2023Atlantic Aviation teamed with 4AIR to offer 100% Book & Claim SAF at Orlando Executive Airport (ORL) and Orlando International Airport (MCO) during NBAA-BACE 2022, and subsequently expanded the partnership to provide sustainability services to general aviation clients through Global Aerospace Partners.
• Southwest AirlinescoreStrategic or Co-development Partner · 17 October 20224AIR partnered with Southwest Airlines to document and allocate SAF use and certain Scope 3 emission reduction rights arising from Southwest's use of SAF for corporate clients participating in its SAF Beta Program. These clients purchase Scope 3 emission reduction rights from Southwest's SAF use, which helps reduce the premium of SAF over conventional jet fuel and sends demand signals to the market.
• NATA (National Air Transport Association)coreStrategic or Co-development Partner · 16 August 20224AIR and NATA announced the first-ever SAF delivery receipt for business aviation, standardizing documentation for SAF transactions. NATA membership and partnership provides 4AIR access to NATA's member base of general aviation operators and FBOs.
• University of Cambridge Aviation Impact Accelerator (AIA)coreStrategic or Co-development Partner · 9 December 20214AIR partnered with the Aviation Impact Accelerator, led by University of Cambridge, to develop interactive, evidence-based tools to engage decision-makers, the aviation industry, and the public about how to achieve Net Zero Flight. The partnership is funded through 4AIR and its Aviation Climate Fund. The AIA brings together multidisciplinary experts from Cambridge's Whittle Laboratory, CISL, and other institutions, along with industry advisors including Rolls-Royce, Boeing, BP, and Heathrow.
• Del Monte Aviation / Monterey Fuel CompanycoreStrategic or Co-development Partner · 4 August 20214AIR coordinated with Del Monte Aviation and Monterey Fuel Company LLC to offer SAF at Monterey Regional Airport during Monterey Car Week, with Flexjet as launch customer. 4AIR covered the premium cost of SAF over traditional jet fuel, managed all SAF accounting and documentation, and offset all inbound and outbound flights to the event at 4AIR Level 1. Del Monte Aviation secured over 24,000 additional gallons of 30%-blended SAF for the event.
• FlexjetcoreStrategic or Co-development Partner · 21 May 2021Flexjet partnered with 4AIR to offset emissions from its flight activity in Europe and the United States. In the US, Flexjet offsets 100% of CO2 emissions (4AIR Bronze). In Europe, Flexjet offsets 300% of CO2 to account for non-CO2 pollutants (4AIR Silver). Flexjet became the largest private aviation operator to achieve a Carbon Neutral Rating. 4AIR also facilitates SAF procurement and documentation through an internal book-and-claim program on the Flexjet fleet.
• Jet Linx AviationcoreStrategic or Co-development Partner · 22 April 2021Jet Linx partnered with 4AIR enabling its Jet Card, Joint Ownership, and Aircraft Management clients to opt in to the 4AIR Level 1 Rating, under which CO2 emissions from their aviation activity are offset 100% through credits funding carbon-reduction and clean energy projects globally. Jet Linx customers pay for carbon credits through an additional fee, with 4AIR verifying flight activity and purchasing verified credits.
• IATA (International Air Transport Association)coreStrategic or Co-development Partner · 2 March 20214AIR became the first private aviation stakeholder to make a trade on IATA's Aviation Carbon Exchange (ACE), a centralized platform where airlines and aviation stakeholders trade carbon offsets. 4AIR's first transaction was 15,000 carbon offsets purchased on behalf of PrivateFly from a solar-renewable energy project in India. The ACE was developed by IATA in partnership with Xpansiv market CBL.
• Clay Lacy AviationcoreStrategic or Co-development Partner · 16 February 20214AIR partnered with Clay Lacy Aviation to offer a 4AIR sustainability rating to Clay Lacy aircraft while certifying the company's facilities in Oxford CT, Van Nuys CA, San Diego CA, Seattle WA, and Orange County CA as carbon-neutral. This was the first-ever carbon emissions offset rating for FBO and MRO facilities. Clay Lacy also offers 4AIR ratings to participating aircraft under management, providing validation of existing efforts and a clear sustainability pathway.

Scale indicators10 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• SITA: SITA provides IT and communications infrastructure to the air transport industry, including sustainability and emissions reporting solutions used by airlines and airports. As a broad aviation technology incumbent, it competes for the regulatory compliance and emissions monitoring budget that 4AIR targets.
• SkyNRG: SkyNRG is a leading Sustainable Aviation Fuel supplier and book-and-claim infrastructure provider, supplying SAF and managing SAF credit allocation for airlines and corporate buyers. It is a partial competitor and potential partner to 4AIR's SAF Registry and book-and-claim services.
• South Pole Group: South Pole is a large, established climate solutions provider offering carbon offset project development, advisory, and sustainability services across industries including aviation. Its aviation practice and CORSIA-eligible offset portfolio place it as a broad incumbent overlapping with 4AIR's offset procurement and corporate advisory work.
• Avfuel Corporation: Avfuel is a major supplier of aviation fuels and Sustainable Aviation Fuel to FBOs and business aviation operators, including SAF supply and chain-of-custody documentation. It competes with 4AIR for SAF-related revenue and FBO relationships, and is a potential SAF infrastructure partner.
• Neste: Neste is the world's largest producer of renewable diesel and Sustainable Aviation Fuel (Neste MY SAF), supplying airlines and corporate buyers directly. As a major SAF producer it competes for SAF procurement dollars that 4AIR's Gold and Platinum tiers depend on.
• Climate Partner: Climate Partner provides carbon offset and climate action solutions to companies across travel, logistics, and aviation, including SAF programs and certified offset portfolios. It competes with 4AIR for corporate aviation and travel customers seeking turnkey climate neutral certification.

Direct peers

• Chooose: Chooose is a Norway-based climate-tech platform focused specifically on aviation and travel sustainability, offering APIs for emissions calculation, carbon offset integration, and SAF allocation. Like 4AIR, it serves airlines, corporates, and travel platforms with embedded sustainability tooling, making it the closest direct competitor in aviation-focused climate infrastructure.
• AvioBook: AvioBook (an Avinor subsidiary) provides electronic flight bag and operational software to airlines and business aviation operators, including emissions calculation modules and CORSIA/EU ETS compliance tooling. Its integration into the dispatch workflow overlaps directly with 4AIR's ForeFlight and Leon Software integrations.

Emerging players

• Watershed: Watershed is an enterprise carbon accounting and reduction platform used by large corporates including aviation and logistics companies. While not aviation-specific, its measurement and reporting tooling competes for the same enterprise sustainability budget that funds 4AIR's regulatory compliance offering.
• Patch (formerly Cloverly): Patch offers an API-based carbon offset marketplace that integrates into booking and e-commerce platforms, including aviation and travel customers. Its embedded offset API competes with 4AIR's flight-planning integrations and book-and-claim infrastructure.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights8 records

Customer concentration

• Instagraminstagram.com/4air.aero
• LinkedInlinkedin.com/company/4air

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about 4AIR