A sharp increase in jet fuel prices is forcing major U.S. airlines to revise their earnings forecasts downward, highlighting the challenges carriers face in managing rapidly rising fuel costs amid strong travel demand. American Airlines, which had initially planned to raise its 2026 earnings outlook earlier this month, reversed course within two weeks after its projected fuel expenses for the remainder of the year grew by nearly $1.6 billion.

The contrasting pace of fuel price changes and fare adjustments illustrates a persistent imbalance in the airline industry. While fuel costs can spike abruptly within days, fare hikes typically require weeks or months to influence revenue, as they apply only to tickets yet to be sold. Although strong demand and tight capacity have allowed carriers to raise ticket prices without substantially reducing bookings, fare increases have only partially offset soaring fuel expenses.

Jet fuel spot prices surged by nearly 30 percent between July 2 and July 22, a move linked to deteriorating conditions in the U.S.-Iran ceasefire agreement, creating uncertainty for the sector. American Airlines Chief Financial Officer Devon May said the rising fuel costs are expected to reduce profit margins across the industry. “If we had guided on the same day as Delta (July 10), we’d have been guiding up for the year,” May noted, referring to the differing fuel price assumptions used in carrier forecasts.

In early July, American projected pretax earnings close to $1.5 billion for the full year, nearly quadrupling its 2025 results. The revised forecast now ranges from a potential loss to a modest profit, with the breakeven point as the midpoint. American’s narrower margins relative to competitors such as Delta Air Lines and United Airlines limit its ability to absorb escalating fuel costs, increasing pressure on CEO Robert Isom’s efforts to strengthen corporate travel, expand premium seating, and boost loyalty program revenue.

Despite second-quarter record revenue and expectations of robust unit revenue growth in the latter half of 2026, American warned that sustained high fuel prices could weaken cash flow, slow debt reduction, restrain capital investments, and prompt cuts to less profitable routes.

Other U.S. carriers have responded variably to the fuel price surge depending on when their earnings forecasts were issued. Delta maintained its annual earnings outlook based on fuel cost assumptions from July 2, United raised the low end of its forecast last week, and Southwest Airlines recently lowered the bottom of its guidance range. Alaska Airlines declined to reinstate full-year guidance amid continued fuel price volatility. Over this period, jet fuel prices increased from $2.81 to $3.59 per gallon, complicating direct comparisons and diminishing the longevity of outlooks released even days apart.

American reported that nearly half of its $2.2 billion year-over-year increase in second-quarter fuel costs was offset by higher fares, compared to roughly 60 percent recovery at Delta and 50 percent at United. Alaska reported minimal recovery, while Southwest did not disclose a comparable figure. However, the persistent rise in fuel prices challenges the carriers’ ability to recoup costs rapidly. May noted that American’s projected fuel expenses for the remainder of the year climbed by approximately $550 million in just one week.

Each one-cent increase in American’s average fuel price adds around $46 million to annual fuel costs, directly impacting pretax earnings. A 10-cent rise would therefore increase expenses by about $460 million. United echoed these challenges, with CEO Scott Kirby acknowledging that a fuel spike in mid-July added an estimated $575 million to their third-quarter costs, prompting an adjustment in the company’s guidance policy to reflect the most current fuel prices.

Alaska Airlines continues to see strong bookings for fall months but remains highly sensitive to fuel price fluctuations. Ryan St. John, the airline’s vice president of finance, emphasized the uncertainty of fuel price forecasting, estimating that a 25-cent change in average fuel cost could alter quarterly earnings by 50 cents per share.

American maintains it will endeavor to pass on as much of any fuel cost increase as the market permits, though May acknowledged the proportion of cost recovery is continually shifting with daily spot price movements.