American, United and Southwest are all cutting ‘marginal routes’ as jet fuel prices spike

Jet fuel prices have reached record highs, prompting major U.S. airlines - American Airlines, United Airlines, and Southwest Airlines - to review their least profitable routes. The soaring fuel costs have added billions to the airlines' expenses, prompting cost-cutting measures. American Airlines CFO Devon May stated that the fuel spike has added $1 billion to the company's projected fourth-quarter expenses, leading to reduced December flights and less growth planned for next year.

Southwest CFO Tom Doxey said the company has cut its projection of flight capacity growth in half, attributing it to higher fuel costs. United Airlines CFO Mike Leskinen noted that every airline has a "bell curve of profitability" and that some routes become unprofitable as fuel costs rise, leading United to cut some December flights and potentially more next year.

Despite high fuel prices, United still has 35% of its fourth-quarter tickets booked. All three airlines, along with the majority of players in the airline industry, have raised checked bag fees to offset costs. The jet fuel crisis is causing fewer flight options for travelers, potentially leading to higher fares. The industry's fuel spending has increased by nearly 49% from the first six months of the year compared to the same period last year.