U.S. Airlines spent 56.4% more on jet fuel in March than in February, the Department of Transportation said, a surge that landed in the month after the U.S.-Israel strikes on Iran began. The DOT reported carriers paid $5.06 billion for jet fuel in March, up from $3.23 billion in February and roughly 30% more than what airlines paid in March 2025. Reports say the spike has already forced carriers to lower or scrap 2026 forecasts and to scale back some growth plans as they weigh whether to cut capacity or pass costs to customers. The immediate test for those decisions will come during second-quarter earnings and investor calls, when airlines are expected to update guidance.

The Department of Transportation release on Wednesday lays out the scale of a sudden hit to airline operating costs. Month-on-month jet-fuel spending climbed 56.4% from February to March, with total payments rising to $5.06 billion, the DOT said. That March figure is about 30% higher than the same month a year earlier.

How big and why it matters

The spike came in the month after the U.S.-Israel strikes on Iran began, and the timing has shaped how carriers and investors interpret the numbers. Fuel is the industry’s largest variable cost after labour, and the jump in spending has immediate consequences for margins and planning. Reports note carriers are treating the fuel surge as an industry-level problem that will influence network and capacity choices through 2026.

Executives have told investors the sudden rise in fuel bills is a primary driver of near-term margin pressure, according to one of the reports. Faced with much higher fuel prices, several carriers have already lowered or withdrawn their 2026 financial forecasts and scaled back expansion plans to avoid deploying capacity that would burn expensive fuel. The DOT figures are the common data point that anchors both accounts.

Operational fallout and single-sourced details

The broader reporting links the cash hit directly to decisions about routes and fleet plans. Carriers are weighing whether to reduce growth or redeploy aircraft to limit exposure to high-cost flying, reports say. The data have also prompted more cautious capacity announcements for the year, and they have altered financial guidance from multiple airlines ahead of spring earnings season.

Mastheads

Some consequential details appear in only one outlet. CNBC reports that jet fuel prices climbed further in April in some markets as the conflict continued, which intensified supply pressure.

CNBC also reported that higher fuel costs contributed to the weekend collapse of Spirit Airlines, saying the spike undermined Spirit’s plan to exit bankruptcy midyear.

That same CNBC story quotes carriers telling investors they expect customers to absorb higher jet-fuel costs by early 2027 if not sooner. And CNBC additionally cites travel-industry data showing March ticket-sales growth compared with the year before, a detail used to suggest demand held up even as fuel prices jumped.

Combining the DOT numbers with carrier statements points to a period of active adjustment across the industry. Airlines face a mix of choices: trim schedules, slow fleet deliveries, raise fares or accept compressed margins. The immediate operating response has been conservative. Several carriers have scaled back announced growth, while others are re-examining the timing of capacity additions for the rest of 2026, reports say.

For investors, the fuel shock complicates modelling. Higher oil and jet-fuel costs make quarterly results more volatile and raise the bar for carriers forecasting profit improvement. Executives have already been signalling to shareholders that they may need to temper expectations for margin recovery soon, according to one report. Analysts will be watching whether companies shift costs onto customers or find other ways to protect profitability.

The DOT data serve as a tidy, comparable measure of how fast the shock arrived.

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Airlines will lay out the financial impact during second-quarter earnings and investor calls, where carriers are expected to update guidance given the March fuel spike.

This article was created with AI assistance.