DAL · CIK 0000027904
What Delta Air Lines, Inc. told the SEC could break it.
Delta's largest flagged exposure is fuel: jet fuel was 17% of operating expense in 2025 and is highly volatile, and on roughly 4 billion gallons of annual consumption a one-cent move in price shifts its fuel bill by about $40 million. Beyond that commodity risk, it leans on third-party technology — the faulty 2024 CrowdStrike update disrupted its IT systems, drove about 7,000 cancellations and roughly $380 million in revenue impact — and faces regulatory developments including the DOT's September 2025 order terminating antitrust immunity for its Aeroméxico joint venture and EPA renewable-fuel blending obligations at its Monroe Energy refinery, met through blending or buying RINs.
4 self-disclosed vulnerabilities, pulled from its own filings, each in the company’s words, with the source. This is the risk register almost nobody reads.
In its own words
What could break it.
Regulatory & policy
- DOT termination of Aeroméxico joint-venture antitrust immunitymedium
On September 15, 2025, the DOT issued a final order terminating antitrust immunity for Delta's joint cooperation agreement with Aeroméxico and directed the parties to wind down covered joint operations by January 1, 2026.
“On September 15, 2025, the DOT issued a final order terminating the antitrust immunity for our joint cooperation agreement with Aeroméxico and directed us and Aeroméxico to wind down certain joint operations that were covered by the immunity by January 1, 2026.”
SEC filing →As of 2026 - Monroe refinery renewable fuel blending obligations / RINslow
Delta's Monroe Energy refinery is subject to annual EPA requirements to blend renewable fuels into the gasoline and diesel it produces, meetable by blending or by purchasing Renewable Identification Numbers (RINs) in the open market.
“A refinery is subject to annual EPA requirements to blend renewable fuels into the gasoline and on-road diesel fuel it produces. A refinery may meet its obligation by blending the necessary volumes of renewable fuels, by purchasing Renewable Identification Numbers ("RINs") in the open market, or through a combination of blending and purchasing RINs.”
Commodity & input dependence
- aircraft fuel / crude oil price (17% of operating expense)high
Aircraft fuel is one of Delta's largest costs (17% of operating expense in 2025) and is highly volatile; on ~4 billion gallons of annual consumption, a one-cent move in jet fuel price changes annual fuel expense by ~$40 million.
“Fuel costs represented 17%, 19% and 21% of our operating expense in 2025, 2024 and 2023, respectively. Fuel prices are highly volatile and at times have increased substantially in relatively short periods of time. Between 2023 and 2025, our average fuel price per gallon has ranged from a monthly high of $3.22 in October 2023 to a monthly low of $2.20 in August 2025.”
Cybersecurity
- third-party IT/software dependence (CrowdStrike outage)medium
The faulty 2024 CrowdStrike software update significantly disrupted Delta's IT systems (~7,000 cancellations, ~$380M revenue impact); future failures of technology Delta depends on could again expose it to liability and operational disruption.
“As discussed above, the faulty CrowdStrike software update significantly affected our information technology systems, disrupting our operations. Additional failures of the technology we use or depend on could expose us to liability, disrupt our business and damage our reputation in the future.”
SEC filing →As of 2026
The hidden graph
Who it depends on, and who depends on it.
Relationships surfaced from filings, including ones disclosed by the other side, which is how the non-obvious ones come to light.
Its customers
“Our most significant and valuable contract to sell miles relates to our co-brand credit card relationship with American Express. In 2025, remuneration from American Express totaled $8.2 billion, which we expect to grow to $10 billion over the next few years.”
Cited →“For purchases outside of Mexico, we work closely with Delta to leverage volume discounts and better credit conditions and mitigate the impact of supply chain disruptions.”
Cited →
Its suppliers
“the Company's contractual relationships with Delta and United combined accounted for approximately 70.3 %, 72.3 % and 70.9 %, respectively of the Company's total revenues.”
Cited →
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