Delta’s Approach to Sustainability in a Hard-to-Abate Sector

Like all airlines, Delta is exploring ways in which it can decarbonise.

As things stand, aviation accounts for around 3% of global greenhouse gas emissions and is responsible for releasing around 800 million tonnes of CO₂ into the atmosphere each year.

And despite the best efforts of airlines around the world, that percentage is only expected to rise as other industries decarbonise, simply by virtue of the fact that aviation is especially difficult to make sustainable compared to other sectors.

Delta is not content to approach sustainability with apathy, though. The carrier is making some big changes to its operations in a push to reduce fuel consumption.

“Why? Because sustainability is good for business and our people,” says Amelia DeLuca, CSO at Delta.

How is Delta approaching sustainability?

Delta’s sustainability department is making the case for sustainability as a business imperative.

It’s far from easy, though. Each airport and destination in Delta's network is a unique proposition.

A prime example emerged recently at Hilo Airport in Hawai’i, where Delta's Flight Operations and Operations Control Center (OCC) teams collaborated with the airline's Carbon Council to pioneer a fuel-saving landing approach.

“Throughout Delta’s journey to net zero emissions by 2050, we remain committed to decarbonising operations long term, while making changes within our control now to save on jet fuel,” says Amelia.

Hawaiian innovation demonstrates approach

The easternmost runway in Hawai’i presented both challenges and opportunities for Delta's sustainability teams.

Identifying potential fuel savings for Pacific flights using Hilo as a diversion point, Delta specialists developed a proprietary landing approach requiring less jet fuel.

This bespoke procedure required teams to create, chart, test and certify an entirely new approach specific to Delta's operations.

“The team noticed there was a better way of doing things that burned less fuel, so they innovated across teams to make a change,” Amelia explains.

While representing just one airport among hundreds in Delta's global network, the Hilo initiative exemplifies the airline's commitment to implementing fuel-saving measures wherever possible.

It also demonstrates how seemingly minor operational adjustments can generate substantial cost savings when implemented at scale.

Financial benefits complement environmental gains

With more than 4,000 daily flights, Delta recognises that even minimal fuel savings per flight can deliver significant cumulative benefits.

Jet fuel represents one of Delta's largest operational expenses, making efficiency improvements financially attractive beyond their environmental impact.

Earlier this year, the airline announced reaching its first fuel savings milestone, achieving one percent fuel burn reduction through operational improvements.

This translated to 45 million gallons of jet fuel saved, delivering cost benefits exceeding US$110m for the global carrier.

Initiatives like the Hilo airport landing procedure collectively contribute to these impressive financial and environmental outcomes.

Continuous improvement culture drives sustainability

As Delta celebrates its centenary of flight operations, the company's approach to sustainability reflects its broader corporate culture.

Delta's teams have demonstrated their capacity to address complex operational challenges with innovative solutions.

The airline's sustainability strategy leverages this problem-solving ethos, described internally as "the Delta Difference."

With aviation facing increasing scrutiny regarding its environmental impact, Delta's practical approach to emissions reduction provides a model for balancing immediate actions with long-term decarbonisation goals.

The carrier's sustainability journey illustrates how operational efficiency, innovation and environmental responsibility can align to create business value while progressing towards ambitious climate targets.

“We all have a role to play – some bigger than others – in our respective sustainability and decarbonisation journeys,” Amelia says.

“And sometimes, it all starts with an idea that something can be done a little bit better.”

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