The UK government’s Jet Zero Strategy (2022, updated 2024) lays out an ambitious roadmap to decarbonise aviation. Its key commitments include net-zero UK aviation by 2050, with all domestic flights to reach net zero by 2040[1]. Importantly, the strategy requires aviation emissions to peak at 2019 levels and then decline (with interim in-sector targets). For example, UK emissions are capped at ~35.4 MtCO₂e in 2030, ~28.4 MtCO₂e by 2040, and ~19.3 MtCO₂e by 2050[2]. Ground operations at airports must go zero-carbon by 2040[1]. The plan also calls for zero-emission flight routes by 2030 and positions the UK as a global leader in climate negotiations. In particular, the UK launched an “International Aviation Climate Ambition Coalition” at ICAO, pushing for a Paris-aligned long-term goal on international aviation emissions[3].

Among Jet Zero’s pillars are Sustainable Aviation Fuel (SAF) targets. The UK has committed to bringing on at least five commercial-scale SAF plants (under construction) by 2025[4]. By law, a SAF mandate starting in 2025 requires at least 10% of jet fuel to be SAF by 2030 (stepping from 2% in 2025 to 10% by 2030 and 22% by 2040)[5][6]. These measures aim to deliver roughly 1.2 million tonnes of SAF by 2030, supporting thousands of green jobs and significant GVA[6]. In short, Jet Zero ensures UK aviation does not grow emissions and moves sharply toward net-zero, using a combination of efficiency, SAF, zero-emission aircraft, carbon markets, and consumer information[1][5].

Figure 1: Commercial airliner in flight illustrating the UK’s commitment to a net-zero aviation future. The Jet Zero Strategy sets 2050 net-zero targets, domestic 2040 targets, and strong SAF mandates to decarbonise UK aviation[1][5].

The Five Core Pillars of the UK Jet Zero Strategy

1) Overall Net Zero Goals

A central tenet of the Jet Zero Strategy is the establishment of quantified emissions targets for the aviation sector that align with national climate commitments:

Net Zero Aviation by 2050

The strategy’s primary long-term goal, often referred to as “Jet Zero”, is to achieve net zero greenhouse gas emissions from all UK aviation by 2050. This includes emissions from aircraft operations, ground activities, and supporting infrastructure. Achieving this will require deep decarbonisation of energy sources, operational practices, and aircraft technologies, as well as meaningful reductions in both CO₂ and non-CO₂ climate impacts.

Net Zero Domestic Flights by 2040

Recognising that domestic routes present a more controlled technology and regulatory environment, the Jet Zero Strategy sets an earlier target for zero emissions on all UK domestic flights by 2040, a full decade ahead of the broader net-zero goal. Meeting this objective depends on the rapid adoption of low-carbon fuels and new propulsion systems for short-haul aircraft.

Interim In-Sector CO₂ Emissions Trajectory

To guide progress towards 2050, the strategy sets a series of interim emissions budgets for in-sector CO₂ emissions (i.e., emissions from combustion in UK aviation):

  • 35.4 MtCO₂e by 2030
  • 28.4 MtCO₂e by 2040
  • 19.3 MtCO₂e by 2050

These milestones ensure that decarbonisation is monitored and enforced through real emissions outcomes rather than distant aspirations. They also reflect modelling that balances expected demand, operational efficiency gains, and fuel decarbonisation pathways.

2) Sustainable Aviation Fuel (SAF) Goals

Decarbonising aviation fuel is one of the most transformative elements of the Jet Zero Strategy. The government positions Sustainable Aviation Fuel (SAF) as a crucial near- and medium-term solution for reducing lifecycle emissions.

SAF Mandate and Blend Targets

Under the strategy, the UK implemented a SAF mandate beginning in 2025, requiring that a minimum portion of aviation fuel supplied in the UK must be SAF. This mandate scales over time, requiring:

  • At least 10% of UK aviation fuel supplied to be SAF by 2030, and
  • Further increases toward 22% by 2040 under the evolving policy trajectory.

This mandate is designed to provide market certainty for SAF producers, mitigate “first-mover risk,” and stimulate investment in domestic SAF production.

Domestic SAF Production Capacity

A landmark commitment within Jet Zero is the ambition to have at least five commercial-scale SAF plants under construction by 2025. These facilities are essential for scaling up production and reducing reliance on imported SAF; thereby supporting UK energy security while delivering climate benefits.

Together, these targets create a structured commercial incentive framework that addresses both demand creation (via the mandate) and supply scaling (via industrial deployment goals).

3) Airport and Operational Goals

The Jet Zero Strategy recognises that emissions from non-flight operations, such as ground handling, electricity use, and airport vehicles, also contribute significantly to the aviation carbon footprint.

Zero-Emission Airport Operations by 2040

A key operational target is for all airport operations in England to be zero emissions by 2040. This goal aligns with the broader UK Net Zero Strategy and includes electrification of ground support equipment, transfer vehicles, buildings, and onsite energy systems. While some airports have already started electrifying ground fleets and improving energy efficiency, the scale of transformation required across the network is substantial.

4) Zero Emission Flight Goals

Beyond on-ground operations, the UK government has introduced targeted ambitions for zero-emission flight routes.

Zero Emission Routes by 2030

The strategy sets an aspiration for the establishment of zero-emission flight routes connecting regional parts of the United Kingdom by 2030. These routes are expected to be enabled by emerging propulsion technologies such as battery-electric or hydrogen aircraft, primarily on short-haul and regional services. Success in this area would represent a major step toward operationalising sustainable flight technologies at scale.

This goal aligns with broader efforts to encourage innovation in low-carbon aircraft development and airspace modernisation programmes currently being pursued by industry and academia.

5) International Goals

Recognising the inherently global nature of aviation, the UK Jet Zero Strategy includes explicit international engagement objectives.

Paris-Aligned Global Targets

The UK is actively advocating for a more ambitious long-term aspirational goal through the International Civil Aviation Organisation (ICAO) that aligns international aviation emissions with the Paris Agreement. This includes influencing global frameworks such as ICAO’s Long-Term Aspirational Goal (LTAG) for CO₂ emissions to reflect net-zero commitments by 2050, ensuring that international aviation decarbonisation efforts are harmonised rather than fragmented.

To support this, the UK engages with partners in multilateral forums and supports initiatives such as the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA), industry sustainability coalitions, and cross-border SAF partnerships.

Sustainable Aviation Fuel (SAF): Drop-in Carbon Savings

Sustainable Aviation Fuel (SAF): Drop-in Carbon Savings

Sustainable Aviation Fuel (SAF) is a drop-in replacement for fossil jet fuel (Jet A-1) made from renewable or waste feedstocks. It is fully compatible with existing engines and fuel infrastructure (no aircraft modifications required). SAF can cut lifecycle greenhouse-gas emissions by ~70% or more compared to kerosene[7]. (In fact, fully synthetic e-fuels powered by green electricity could eventually achieve >90% reductions, approaching 100% as future tech improves.) Under the UK SAF mandate, only fuels with ≥40% lifecycle CO₂ savings qualify[8].

SAF technologies are often grouped in three “generations”:

  • 1st-Gen (HEFA): hydroprocessed oils/fats (e.g. used cooking oil, tallow). This is commercially mature (TRL 8–9) and cheapest today, but limited by feedstock supply.
  • 2nd-Gen (Advanced Biofuels): e.g. gasification + Fischer-Tropsch (Wood or MSW → syngas → fuel), or alcohol-to-jet from biomass. These use abundant wastes (ag residues, forestry residues, MSW) and yield large carbon savings, but require complex, capital-intensive plants (TRL 6–8) that are only now scaling.
  • 3rd-Gen (Power-to-Liquid / PtL / e-fuels): synthetic fuels made by combining “green” hydrogen (from electrolysis) with captured CO₂. This avoids biomass limits and can cut CO₂ by 90%+, but is very energy-intensive and costly (TRL ~5–6). The UK is exploring PtL via initiatives like the Equilibrion nuclear-enabled PtL project (which could produce ~130,000 t of SAF/year with >95% CO₂ savings[9]).

Currently, aviation regulations (ASTM fuel standards) cap SAF blends at 50% because neat SAF lacks aromatic compounds needed for older jet-engine sealants. To bridge this gap, major airlines and air forces have been testing higher blends: for example, in Nov 2022 the RAF flew an A330MRTT 100% SAF demonstration (from waste oil)[10][11]. Similarly, Emirates operated a 100% SAF test flight on one engine of an A380 (with SAF achieving ~85% lifecycle CO₂ savings)[12][13]. In 2022 Virgin Atlantic performed the first 100% SAF passenger flight (Heathrow–JFK) using an 88% HEFA/12% synthetic-aromatic blend[14][15]. These trials show that 100% SAF operation is feasible when necessary aromatic hydrocarbons are added, and they are gathering data on performance and contrail impacts[16][17]. (Notably, SAF combustion typically produces 50–70% fewer soot particles than kerosene, which should reduce persistent contrail formation[17].)

Figure 2: Technician refuelling a light aircraft SAF is a drop-in fuel. Blends up to 50% are currently certified, but trials (RAF, Emirates, Virgin) show 100% SAF operation is possible[10][16]. Fully replacing kerosene could cut >70% of lifecycle CO₂ emissions in one stroke[7].

Beyond emissions, SAF has economic benefits: a domestic SAF industry can capture fuel spend and create jobs. Industry studies project the UK SAF sector adding ~£2–3 billion to GDP by 2035 and thousands of skilled jobs. But investment hurdles remain: first-of-a-kind SAF plants face a “valley of death” due to high capital costs and fuel-market risk. To address this, the UK is coupling the SAF mandate (which provides tradable certificates for GHG savings) with a new Revenue Certainty Mechanism, effectively a price-floor subsidy for SAF producers[18]. This will de-risk projects and ensure there is a bankable future price for low-carbon jet fuel, helping the mandated targets become reality.

UK Airfields & Airports Embracing SAF

Even small UK airports and FBOs are starting to offer SAF, aligning with Jet Zero. For example:

  • Farnborough Airport (Hampshire): a business-aviation hub. It has sold over 2 million litres of blended SAF since 2021[19]. In March 2025, Farnborough announced a deal for 12.5 million litres of UK-produced waste-based SAF (via Hydrogen Refinery)[20], aiming to offer 20% SAF blends across its site by 2028 (doubling the govt’s 10% by 2030 target)[21].
  • London Biggin Hill (BQH): Air bp now supplies SAF continuously (35% blend) on-site[22]. Biggin Hill’s fuel manager notes that offering SAF helps customers meet net-zero goals[23].
  • Hawarden Airport (Chester): Hawarden (Airbus-owned) also has a permanent Air bp SAF supply[22], supporting Airbus and other operators in North Wales.
  • Bristol Airport (BRS): Bristol’s Centreline FBO was the first UK location to receive ongoing SAF from Air bp in 2021[22]. Bristol’s Master Plan and carbon strategy now explicitly call for SAF handling and alternative fuels.
  • Norwich Airport: In July 2024, East Anglian Air Ambulance flew a helicopter on a 30% SAF blend (470 L) from Norwich[24]. This real-world trial proved SAF can be used in regional ops (EAAA also operates from Cambridge/Marshalls).

These cases are just a snapshot. Many UK airports have signed SAF agreements or trials (e.g. Gatwick, Manchester, Aberdeen have announced SAF fuel availability for airlines). The government’s SAF Mandate means all airports must plan for SAF storage and distribution. (In practice this includes upgrading fuel farms, pipelines or truck-infrastructure to handle higher blends). The Air bp announcements confirm that Biggin Hill, Hawarden, Bristol (Centreline), Gatwick and others now have SAF on tap[22]. In short, Jet Zero is forcing even general aviation fields to prepare: offering SAF to meet mandates and corporate ESG demands.

Figure 3: Fuel truck at an airport gate SAF is now available at multiple UK fields. Air bp reports continuous SAF supply at London Biggin Hill, Bristol (Centreline FBO) and Hawarden[22]. Smaller airports like Norwich and Cambridge are also running SAF trials[24], showing the mandate is driving uptake beyond major hubs.

Implications for UK Airports and Airfields

The combined studies and policies have broad consequences for airport infrastructure and planning:

  • Zero-Emission Operations (2040): Airports must electrify virtually all on-site equipment by 2040. That means battery-powered baggage tugs, cargo loaders, buses, and even ground-support vehicles. Bristol Airport’s ACT2026 program already trialled electric ground handlers (with easyJet) and cut emissions by ~97% (59 kg vs 1,780 kg CO₂ over 6 months)[9]. Jet Zero assumes such electrification (plus renewably-powered terminals) will be completed by 2040.
  • New Flight-Fuel Infrastructure: To host battery or hydrogen aircraft, airports will need major upgrades. Electric planes will require high-capacity rapid-charging points at stands (putting strain on local power grids). Hydrogen aircraft will require cryogenic storage tanks, safety zones, and refuelling equipment. (For example, Cranfield University’s campus airline now has a hydrogen refueller “HyQube” for ground vehicles[25] and is studying on-site H₂ production). These systems demand new safety protocols, building codes and staff training.
  • Renewables & Energy: Airports are urged to generate their own clean power. Many are adding solar and wind on-site. Farnborough installed a lightweight solar farm supplying ~25% of its energy[26]. Such measures cut Scope 2 emissions and help future-proof sites against grid limits. Fuel infrastructure will also need modification: SAF blends must be safely stored, and pipeline/fuel-farm equipment may require compatibility reviews for biofuels.
  • Stricter Planning & Growth Limits: Environmental obligations now constrain expansion projects. Heathrow’s third runway was held illegal in 2020 for failing to consider climate targets (in one judgment[27]). Future expansions in the UK must demonstrate consistency with net-zero. Local communities and regulators will demand detailed carbon assessments. In practice, any airport Master Plan or planning application now needs strong decarbonisation justifications.
  • Surface Access & Scope 3: Airports must also manage ground-travel emissions. New Surface Access Strategies (often a regulatory requirement) will push for public transport, cycling and EV infrastructure for passengers and staff. Many airports (Heathrow, Edinburgh, etc.) are integrating rail links or bus services to reduce car usage.
  • Fuel Uplift Rules (Tankering): Because SAF will likely cost more, airlines might be tempted to “tankering” (carrying extra non-SAF fuel from abroad to avoid buying expensive SAF in the UK). The EU’s SAF rules explicitly ban tankering[28], and the UK is expected to follow suit. Policies may mandate minimum fuel uptake on departure (like Australia’s “fuel baseline” rule) to ensure domestic SAF is used and to prevent carbon leakage[28].
  • Airspace & Operational Efficiencies: Airports must support more efficient flying. This includes optimising runway usage, implementing performance-based navigation, and collaborating on airspace modernisation. For instance, the UK’s rollout of Free Route Airspace (over Scotland in 2021, Western England in 2023) is already saving ~12,000 tCO₂ per year in each phase[29]. Further steps like continuous climbs, reduced holds, and single-engine taxiing will be required industry-wide.

Together, these changes mean airports will see huge infrastructure projects: from solar farms and H₂ stations to retrained staff. Industry roadmaps (e.g. the Sustainable Aviation SAF Roadmap[5] and ATI integration studies) stress that airports must engage early in SAF logistics and sustainable infrastructure. Those who prepare by investing in renewables, EV charging, fuel updates and rigorous planning will be best placed as Jet Zero unfolds.

Conclusion: Navigating the Net-Zero Flightpath with SustainZone

The UK’s Jet Zero Strategy signals a seismic shift for the aviation sector. Achieving these targets will require rigorous planning, data, and strategy at every step. SustainZone helps aviation organisations build and execute these net-zero roadmaps. Our consultancy provides structured decarbonisation plans and real-time emissions tracking tailored to the industry. We help airports and airlines integrate SAF in their fuel supply, upgrade ground operations to zero-carbon, and comply with evolving mandates (from CORSIA to the UK SAF mandate).

For example, our aviation team can assist with carbon footprint baselining, emissions monitoring under ICAO/CORSIA, SAF procurement and certificate management, and Scope 3 reduction strategies. By combining Jet Zero requirements with on-the-ground data, SustainZone enables airlines and airports to “prove you are on track” towards net-zero, as demanded. Learn more about our aviation sustainability solutions on our Aviation Industry page or contact us to develop a custom net-zero aviation strategy.

The time for action is now: every flight can be a step toward net-zero aviation. With the right partnerships and planning, the UK’s small airfields and major airports alike can transform to meet Jet Zero. SustainZone is ready to help navigate that transformation.

References:

[1] Flying Toward a Greener Future: Sustainability in the Aviation Industry  – Sustainzone Insights

[2] [PDF] Jet Zero Strategy – GOV.UK https://assets.publishing.service.gov.uk/media/62e931d48fa8f5033896888a/jet-zero-strategy.pdf

[3] [7] Sky’s the limit as UK sets out strategy to reach net zero aviation and deliver guilt-free flying – GOV.UK
https://www.gov.uk/government/news/skys-the-limit-as-uk-sets-out-strategy-to-reach-net-zero-aviation-and-deliver-guilt-free-flying

[4] [5] [29] Net zero and the UK aviation sector: Government Response to the Committee’s Third Report – Environmental Audit Committee
https://publications.parliament.uk/pa/cm5804/cmselect/cmenvaud/622/report.html

[6] Greener flights ahead for UK aviation – GOV.UK
https://www.gov.uk/government/news/greener-flights-ahead-for-uk-aviation

[8] RTFO and SAF Mandate Technical Guidance
https://assets.publishing.service.gov.uk/media/69a80d72622103d52c1a9b6e/dft-rtfo-saf-mandate-technical-guidance-26.pdf

[9] Aviation Carbon Transition Programme
https://www.bristolairport.co.uk/corporate/environment/aviation-carbon-transition-programme

[10] [11] airbus.com
https://www.airbus.com/sites/g/files/jlcbta136/files/2022-11/en_press_release_airbus_a330mrtt_flight_with_100_saf_.pdf

[12] [13] [16] Emirates operates first demo flight with 100% SAF
https://www.emirates.com/media-centre/emirates-worlds-first-airline-to-operate-a380-demonstration-flight-with-100-sustainable-aviation-fuel

[14] [15] [17] Virgin Atlantic flies world’s first 100% Sustainable Aviation Fuel flight from London Heathrow to New York JFK
https://corporate.virginatlantic.com/gb/en/media/press-releases/worlds-first-sustainable-aviation-fuel-flight.html

[18] Sustainable aviation fuel revenue certainty mechanism: approach to industry funding – GOV.UK
https://www.gov.uk/government/consultations/saf-revenue-certainty-mechanism-approach-to-industry-funding/sustainable-aviation-fuel-revenue-certainty-mechanism-approach-to-industry-funding

[19] [20] [21] [26] Farnborough Airport Signs Landmark 12.5 Million Litre Sustainable Aviation Fuel Deal in a Pioneering Step to Help Kick-Start the UK Domestic Refining Sector | News | Farnborough Airporthttps://www.farnboroughairport.com/news/farnborough-airport-signs-landmark-12-5-million-litre-sustainable-aviation-fuel-deal-in-a-pioneering-step-to-help-kick-start-the-uk-domestic-refining-sector

[22] [23] Air bp SAF now in steady supply at three UK airports | SAF Investor
https://www.safinvestor.com/news/131616/air-bp-saf-now-in-steady-supply-at-three-uk-airports/

[24] EAAA trials sustainable aviation fuel – East Anglian Air Ambulance
https://www.eaaa.org.uk/news/eaaa-trials-sustainable-aviation-fuel

[25] IOM3 | Cranfield launches hydrogen refuelling station

https://www.iom3.org/resource/cranfield-launch-hydrogen-refuelling-station.html

[27]  Top UK court overturns block on Heathrow’s third runway – Carbon Brief
https://www.carbonbrief.org/daily-brief/top-uk-court-overturns-block-on-heathrows-third-runway/

[28] PolicyWatch — 4AIR
https://www.4air.aero/policywatch