Airline Profitability Struggles

The aviation industry is currently facing a paradoxical situation. While airports are crowded and passenger numbers have returned to pre-pandemic levels, many airlines are finding it incredibly difficult to turn a profit. The core of this issue lies in a rapid escalation of operating costs. Specifically, the combination of historically high pilot contracts and volatile jet fuel prices is squeezing profit margins, forcing carriers to rethink their business models to survive.

The Historic Surge in Labor Costs

For decades, fuel was generally the single largest expense for an airline. That dynamic has shifted recently due to a massive wave of new labor agreements. Following the travel resurgence after 2020, the industry faced a severe pilot shortage. This gave pilot unions unprecedented leverage to negotiate historic pay raises.

The “Big Three” legacy carriers set a new standard that the rest of the industry has been forced to follow:

• Delta Air Lines: In 2023, Delta pilots ratified a contract that included a 34% cumulative pay increase over four years. This deal set the market rate, signaling to other unions that the era of concessions was over.
• American Airlines: Shortly after Delta, American matched these terms. Their agreement added approximately $9.6 billion in incremental costs over the life of the contract.
• United Airlines: United followed suit with a deal valued at roughly $10 billion, including raises of up to 40% for certain positions over four years.

These contracts mean that senior captains on wide-body aircraft can now earn salaries approaching or exceeding $450,000 to $500,000 annually. For the airlines, this permanently raises the “break-even” load factor. They now need to sell more seats at higher prices just to cover the crew costs before paying for a single gallon of fuel.

Jet Fuel Volatility

While labor costs are a fixed pressure, jet fuel represents a volatile variable that can ruin a quarterly balance sheet overnight. Jet fuel typically accounts for 20% to 30% of an airline’s total operating expenses.

Crude oil prices have fluctuated wildly due to geopolitical tensions in the Middle East and Ukraine. However, airlines face a specific challenge known as the “crack spread.” This is the difference between the price of crude oil and the price of the refined product (jet fuel). Even when crude oil prices stabilize, refining capacity issues can keep jet fuel prices artificially high.

For low-cost carriers, this is particularly devastating. Legacy carriers like Delta and United can pass some of these costs onto business class passengers who are less price-sensitive. Ultra-low-cost carriers (ULCCs) like Spirit and Frontier operate on razor-thin margins. When fuel jumps by even a few cents per gallon, it can wipe out the profit from an entire flight.

The Crisis for Budget Airlines

The squeeze on margins is not affecting all airlines equally. The industry is seeing a bifurcation between premium carriers and budget carriers. The budget model relies on keeping costs as low as possible to offer cheap tickets. With labor and fuel costs soaring, that math no longer works as well.

Spirit Airlines serves as the primary example of this struggle. In November 2024, Spirit filed for Chapter 11 bankruptcy protection. Their struggles were compounded by a few specific factors:

1. Blocked Merger: A federal judge blocked their proposed merger with JetBlue, cutting off a potential lifeline.
2. Engine Issues: A significant portion of their fleet was grounded due to Pratt & Whitney GTF engine recalls, meaning they were paying for planes that could not fly.
3. Pricing Power: They could not raise ticket prices enough to cover the new labor and fuel costs without losing customers to competitors.

Supply Chain Constraints and Maintenance

Beyond fuel and pilots, airlines are paying more to keep their current fleets running. Manufacturing delays at Boeing and Airbus have forced airlines to fly older aircraft longer than intended.

Older planes are less fuel-efficient and require more heavy maintenance. Keeping a 20-year-old aircraft airworthy costs significantly more than operating a brand-new Airbus A321neo or Boeing 737 MAX.

Furthermore, a shortage of mechanics and spare parts has led to longer turnaround times for repairs. When a plane is stuck in a hangar waiting for a part, it generates zero revenue while still accruing ownership costs (lease or loan payments).

How Airlines Are Pivotting to survive

To combat shrinking margins, airlines are aggressively changing how they generate revenue. The focus has shifted from “putting as many bodies on a plane as possible” to “extracting maximum value from every passenger.”

The Premium Push

Standard economy seats are no longer the priority. Airlines are expanding “Premium Economy,” Business, and First Class cabins because these seats command significantly higher margins. United and Delta have reported that premium revenue is growing faster than standard coach revenue.

Loyalty Programs as Lifelines

For many carriers, the frequent flyer program is more profitable than the airline itself. Banks pay airlines billions of dollars for “miles” to give to credit card holders. This high-margin revenue stream helps offset the low margins of flying planes.

Ending Open Seating

Even Southwest Airlines, famous for its open seating policy and profitability streak, has felt the pressure. Facing activist investor pressure from Elliott Management and needing to increase revenue, Southwest announced in 2024 that it would move to assigned seating and offer seats with extra legroom to capture premium revenue.

Frequently Asked Questions

Why are airline tickets so expensive if airlines are losing money? Ticket prices are high due to strong demand and limited capacity (fewer planes available). However, the cost to operate the flight (fuel, labor, maintenance) has risen faster than ticket prices in many sectors. Essentially, the airline is collecting more revenue but keeping less of it as profit.

Which airlines are currently the most profitable? Generally, Delta Air Lines and United Airlines have outperformed the sector recently. Their focus on premium travelers, international routes, and massive loyalty programs helps insulate them from rising costs better than budget carriers.

How much of an airline’s cost is fuel? It varies by year and oil prices, but it typically ranges between 20% and 30% of total operating expenses. It is usually the second-largest expense behind labor.

What happened to Spirit Airlines? Spirit filed for Chapter 11 bankruptcy in late 2024. The airline struggled with the new high-cost environment, engine recalls that grounded their planes, and the inability to merge with JetBlue. They are restructuring to try and emerge as a stronger company.