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Airlines Cut Routes as Jet Fuel Hits Record Highs

By Markets Desk · 2026-09-18 · 2 min read
A large jet engine intake and a stack of aviation fuel drums
Illustration: Tradingbird

Jet fuel prices have doubled to $4.71 per gallon, forcing major carriers to slash capacity and raise fares.

Jet fuel prices reached $4.71 per gallon this week. This level is more than double the cost from a year ago. It sits near a 20-year high. American Airlines, United Airlines, and Southwest Airlines are cutting capacity in response. Executives stated that marginal routes are no longer profitable at current fuel costs. The industry is shifting strategy to preserve cash flow.

American Airlines CFO Devon May announced a $1 billion increase in fourth-quarter expenses due to fuel. The carrier is cutting December flights and slowing growth plans for next year. Southwest Airlines reduced its capacity growth projection from 2-3% to 1-1.5%. United Airlines is also reducing December schedules. These moves aim to maximize free cash generation in a high-cost environment.

Fuel Costs Drive Route Cuts

United CFO Mike Leskinen explained that some routes fail to generate profit when fuel prices rise. The airline is trimming these marginal services to maintain financial health. Leskinen noted that 35% of fourth-quarter tickets are already sold. Airlines cannot raise prices on these existing bookings immediately. Higher costs will eventually pass through to future travelers.

Airlines have already raised checked bag fees to offset expenses. This measure applies across the industry. The cost pressure is significant for major carriers. United spent $8.2 billion on fuel in the first half of the year. American spent $7.8 billion. Both figures represent a 49% year-over-year increase. Southwest spent $3.6 billion, a 39% rise.

Traveler Impact and Price Increases

Fewer routes mean fewer flight choices for passengers. Travelers may face less convenient departure times. Nonstop options are becoming scarcer. Layovers are becoming more common. Fare prices are rising rapidly. August fares are 23.4% higher than last year. This outpaces the 3.4% increase in overall consumer prices. Data from the Bureau of Labor Statistics confirms this trend.

Global Supply Disruptions Affect Airlines

Geopolitical tensions in Iran have choked global oil supply. This disruption hits jet fuel markets particularly hard. Europe is more dependent on Middle Eastern oil than the U.S. Ryanair cut its full-year passenger forecast from 216 million to 214 million. CEO Michael O’Leary warned that high oil prices threaten the carrier's low-cost model. The US market is also feeling the strain through higher operational costs.

The source GN auto markets/energy: gasoline prices highlights the broader energy crisis. Airlines are absorbing much of the cost initially. However, sustainability requires price adjustments. The industry is prioritizing profitability over network expansion. Capacity reductions will likely continue if fuel prices remain elevated. This marks a significant shift in airline economics.

Based on reporting by Fortune, compiled by the Tradingbird desk.

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