3rd International Sustainable Aviation Research Conference

Aviation's hardest decade, discussed in the open.

Researchers, regulators, and the industry building the next generation of jet fuel, meeting in Seattle, summer 2027.

When
Summer 2027Dates announced summer 2026
Where
Seattle, WAPacific Northwest, USA
Who
Hundreds of expertsResearchers, industry, regulators
Series
Dublin · Chengdu · Seattle2025 · 2026 · 2027
StatusSite under development · 2027 programme being assembled
01 · About

Where four communities meet.

ISAR exists because no other forum brings the full sustainable-aviation value chain into the same room. Researchers and policymakers. Engine manufacturers and feedstock producers. Regulators and finance. Seattle is where all four already collaborate, and where more will join in 2027.

01

Academia

Refereed sessions, poster forums, and student programming covering combustion chemistry, lifecycle analysis, contrail science, fuel qualification, and human-health impacts. Designed to take students seriously.

02

Industry

OEMs, airlines, fuel producers, and supply-chain operators presenting commercialisation challenges as research problems, not pitches. Town halls and roundtables alongside the technical programme.

03

Government & multilateral

National aviation regulatory bodies from North America, Europe, and Asia expected in attendance, alongside national laboratories and multilateral organisations. The forum where research findings meet the agencies whose policies depend on them.

02 · Programme

Twelve research tracks. One question.

How does aviation reach net-zero by 2050 without losing affordability or energy security? Each track answers a piece of that question. Sessions are 20-minute talks plus discussion, in single and parallel formats.

T01

Lifecycle Analysis

Well-to-wake methodologies, attributional vs. consequential framing, and standardisation across regulatory regimes.

T02

Techno-economic analysis

Production cost modelling for SAF pathways at scale, sensitivity to feedstock and policy.

T03

Environmental impact

Non-CO₂ effects, contrail-induced warming, and air-quality co-benefits at airport scale.

T04

Human-health impacts

Exposure pathways for airport-adjacent communities and the workforce.

T05

Fuel characterisation

ASTM qualification, prescreening, and the chemistry of drop-in compatibility.

T06

SAF feedstocks

Lipids, sugars, residues, and the agronomy of perennial energy crops.

T07

Chemical conversion

HEFA, ATJ, FT, and emerging catalytic routes from lab to commercial scale.

T08

Biological conversion

Fermentation, microbial lipid pathways, and the metabolic engineering of feedstock organisms.

T09

Electrochemical & PtL

Power-to-liquids, direct air capture integration, and the electricity demand of synthetic kerosene.

T10

Hydrogen aviation

Cryogenic systems, tank integration, and the certification path for liquid-hydrogen propulsion.

T11

Policy & markets

Mandates, tax credits, book-and-claim, and the design of cross-border SAF trading.

T12

Workforce & pedagogy

Educating the cross-disciplinary aviation engineer of 2040, feedstocks to combustors to climate.

03 · Speakers

The 2027 lineup is still being assembled.

Keynote speakers for Seattle 2027 will be announced once the programme committee has finalised invitations. In the meantime, here are the keynotes who shaped the conversation at the first two editions of the series.

ICSAR 2025 · Dublin · Keynote speakers

Prof. David Chiaramonti

Politecnico di Torino

Spoke on the European policy and infrastructure landscape for sustainable aviation fuel.

Dr. Jinxia Fu

Second Research Institute of CAAC

Returning chair for ISAR 2026. Spoke on civil aviation regulation and SAF qualification in China.

Dr. Bastian Rauch

European Union Aviation Safety Agency (EASA)

Spoke on fuel prescreening and the chemistry of drop-in compatibility.

Dr. Michael Wang

Argonne National Laboratory

Spoke on lifecycle analysis methodologies and the GREET model framework for SAF.

ISAR 2026 · Chengdu · Programme leadership
Co-chair

Dr. Jinxia Fu

Second Research Institute of CAAC

Co-chairs ISAR 2026 in Chengdu, leading the China civil aviation regulator's SAF programme and uniting Asian and Western audiences for the conference series.

Co-chair

Prof. Stephen Dooley

Trinity College Dublin

Co-founded the conference series with Joshua Heyne at ICSAR 2025 in Dublin, and continues as co-chair for the Chengdu edition. Speaks on combustion chemistry of next-generation fuels.

ISAR 2027 · Seattle · Programme leadership
Co-chair

Prof. Joshua Stephen Heyne

Washington State University

Co-founded the conference series with Stephen Dooley at ICSAR 2025 in Dublin and hosts the Seattle edition. Leads FAA ASCENT-supported research on sustainable aviation fuel characterisation and prescreening at Washington State University, anchoring the Pacific Northwest as the venue for the third edition.

Co-chair

Prof. Stephen Dooley

Trinity College Dublin

Co-founded the conference series with Joshua Heyne at ICSAR 2025 in Dublin and continues as co-chair for the Seattle edition. Speaks on combustion chemistry of next-generation fuels and the qualification science behind their adoption.

ISAR 2027 · Seattle · Keynotes

Keynote lineup to be announced.

The 2027 programme committee is finalising keynote invitations across academia, industry, and government. Confirmed speakers will be published here as they accept.

04 · What to expect

Three threads, woven through.

A look at the shape of the programme rather than its day-by-day schedule. Sessions, plenaries, social events, and side meetings will be slotted across the three days once the call for abstracts has closed and the programme committee has finalised acceptances.

Thread 01

Policy

The regulatory and market landscape across jurisdictions: SAF mandates, tax credits, fuel-qualification pathways, lifecycle accounting standards, and the cross-border architecture that makes the next decade work or not. Sessions and plenaries throughout.

Thread 02

Technical

The bulk of the programme: refereed talks, parallel sessions, and the poster forum across the twelve research themes, fuel chemistry, propulsion, contrail science, lifecycle analysis, hydrogen aviation, and more. Where the new science gets aired and questioned.

Thread 03

Community

Student programming, the mentoring forum, regional site visits, the welcome reception, the conference dinner, and the handover to the 2028 host city. The threads that turn a programme of papers into a working community across institutions and generations.

High-level keynotes

Plenary talks from senior figures in academia, industry, and the regulatory community. Each keynote opens a day and is followed by Q&A. Keynote speakers for 2027 will be announced as invitations are confirmed.

Technical tracks

Parallel sessions across the twelve research themes, lifecycle analysis, fuel chemistry, contrail science, hydrogen aviation, policy and markets, and more. Each session is short presentations followed by structured discussion.

Networking

A welcome reception, a conference dinner, the poster forum, and structured coffee breaks designed to put researchers, industry, and regulators in the same conversation. The hallway track is half the reason people come.

05 · Seattle

The region aviation built.

Washington state is the largest aerospace cluster in the United States, and it has translated that industrial base into some of the most aggressive sustainable-aviation policy in North America. Seattle 2027 holds ISAR in the place where the industry, the research community, and the legislation already exist, and where each pushes the other forward.

Industry scale
$71B
Annual aerospace industry revenue in Washington state, 2023 figures.
194,000
Direct and indirect aerospace jobs across the state.
1,500+
Aerospace suppliers and vendors in the state, the largest such supply chain in the United States.
#1
U.S. state for aerospace exports for more than a decade running.

Boeing Commercial Airplanes remains headquartered in the region (Renton and Everett), and a substantial majority of aerospace jobs in the state are connected to Boeing or its supplier network. Washington has led U.S. states in aerospace exports for more than a decade.

Sustainability leadership

SAF tax credit

Washington's 2023 SAF legislation provides a per-gallon tax credit of up to two dollars for sustainable aviation fuel produced or used in the state, layered on top of the federal credit under the Inflation Reduction Act.

Climate Commitment Act & Clean Fuels Standard

Economy-wide cap-and-invest covers most of the state's emissions; aviation fuels themselves are exempt from the cap, but are addressed by the Clean Fuels Standard, which sets carbon-intensity targets and a SAF-blend pathway scaling over time.

Port of Seattle SAF target

Seattle-Tacoma International Airport has committed to a 10% SAF blend in all jet fuel uplifted at the airport by 2028, with regional supply sourcing as a strategic preference.

FAA ASCENT Center of Excellence

Washington State University co-leads, with MIT, the FAA's ASCENT Center of Excellence for Alternative Jet Fuels and Environment, anchoring research from feedstocks through fuel qualification across more than a dozen partner institutions.

Industrial cluster

Beyond Boeing, the regional sustainability cluster includes ZeroAvia's hydrogen-electric manufacturing in Everett, an emerging SAF R&D Center at Paine Field developing under the Cascadia Sustainable Aviation Accelerator, and a growing roster of fuel and propulsion start-ups.

National laboratory presence

The Pacific Northwest National Laboratory in Richland anchors federally-funded research on bioenergy, atmospheric chemistry, and the lifecycle of low-carbon fuels, with work directly relevant to the conference programme.

A regional SAF cluster

The Pacific Northwest is among the densest sustainable-aviation clusters in North America. Production projects, refinery conversions, renewable-fuel facilities, and offtake agreements span the corridor from British Columbia through Washington and Oregon and across to the Northern Rockies, alongside policy frameworks that make the supply economics work.

Many of the production pathways the conference programme covers in theory, alcohol-to-jet, HEFA, power-to-liquids, refinery co-processing, are being built out commercially within a day's drive of the venue. The 2027 programme will reflect the work that lives in the region.

Mount Rainier rising above the clouds, the volcanic anchor of the Cascade range south of Seattle.
47.6062° N · 122.3321° W Mt. Rainier · 14,411 ft
Hosting in Seattle

Why this place, this year.

The case for Seattle 2027 is not the cityscape. It is that the work the conference exists to discuss is happening here, at scale, across the regional aerospace cluster, the FAA Center of Excellence at Washington State University, the regional national-laboratory presence, and the Port of Seattle's regional SAF programme.

"Choose the venue that lets you see the weather. The city is more honest about itself in the rain."

Conference venue, accommodation, and travel guidance will be published once the dates are confirmed and contracts are in place.

06 · Sponsorship

Support the mission, and the outcomes.

ISAR's sponsorship model funds the programme directly: student travel grants, open-access proceedings, and the working sessions that make the public conference worthwhile. Five tiers; each one tied to specific outcomes.

07 · Register

Registration opens spring 2027.

When the call for abstracts closes, registration opens with three tiers covering academia, industry, and students. Payment will be handled through a secure Stripe checkout. The buttons below will be live the day the portal opens; until then, subscribe to the newsletter and we will email once with the date and the link.

Payments processed by Stripe. Receipts sent automatically. No card data is stored on conference servers.

08 · FAQ

Useful answers, not boilerplate.

If your question isn't here, write to the secretariat at [email protected].

What's the difference between a paper, a talk, and a poster at ISAR?

A talk is a presentation in a thematic session, typically followed by Q&A. A paper is a refereed extended abstract published in the open-access proceedings, and most talks have a paper attached. A poster is presented at the dedicated forum and is the format we expect for early-stage work or work better suited to one-on-one discussion. All three are submitted through the same portal once the call for abstracts opens.

Is there a remote attendance option?

Plans for remote and hybrid participation will be confirmed alongside the rest of the programme. The conference series has prioritised in-person attendance, since most of ISAR's value is in the hallway, but we recognise that travel is not always feasible and intend to make as much of the programme accessible as we can.

What is ISAR's position on the carbon footprint of an aviation conference?

The committee will publish an estimated travel footprint and a carbon disclosure ahead of the event. We do not pretend that this is a low-carbon conference, and we are working with regional partners on options to reduce the impact of delegate travel, including, where possible, the use of sustainable aviation fuel on flights into the region.

What is the no-show policy for accepted abstracts?

If your abstract is accepted and you cannot attend, please withdraw it as early as possible so the slot can be reassigned. Co-authors may present in your place. Specific deadlines and policies will be published with the call for abstracts.

What about visas?

Once registered, attendees can request a formal letter of invitation for U.S. visa purposes. We aim to turn these around within a working week. If you anticipate visa difficulty, please register and request the letter as early as possible.

Will there be childcare or accessibility accommodations?

The committee is committed to making ISAR welcoming for attendees with caregiving responsibilities and for attendees with disabilities. Specific arrangements, including childcare, accessibility services, and dietary accommodations, will be published with the registration details.

What is the code of conduct?

ISAR follows a standard academic conference code of conduct. Harassment in any form is incompatible with attendance. The full text and the reporting process will be published on the site ahead of registration opening.

The call for abstracts opens later this year.

Sign up for the ISAR newsletter and we will write, once, when the portal opens.