International Consolidated Airlines Group (IAG) and Rolls-Royce Holdings (RR) have posted sharp gains this month, driven by distinct but equally powerful tailwinds. IAG shares climbed to 488p, their highest level since 1997, while Rolls-Royce touched a record 1,532p before settling at 1,426p. Year-to-date, IAG is up 14.5% and Rolls-Royce has risen 23%, far outpacing the FTSE 100’s roughly 5% gain.
Jet Fuel Plunge Lifts IAG Margins
The primary catalyst for IAG and other airline stocks is a steep decline in jet fuel prices. Brent crude and West Texas Intermediate (WTI) have fallen to their lowest levels since February, amid US-Iran talks in Switzerland and resumed oil flows through the Strait of Hormuz. The average jet fuel price has dropped 24% month-on-month to $119.17 per barrel, with further declines expected if energy prices continue to slide.
Lower fuel costs directly improve airline margins. IAG’s first-quarter results already showed operating profit up 77.3% and an operating margin of 4.9%. With jet fuel falling, those margins are likely to expand further, easing earlier market concerns about profit weakness. IAG’s diversified brand portfolio—including British Airways and Aer Lingus—and its relatively limited exposure to Middle East routes have also helped insulate it from regional disruptions.
The broader airline sector has benefited, with the US Global Jets ETF (JETS) rising 40% from its 2026 low to $32.50.
Rolls-Royce: Multiple Growth Drivers
Rolls-Royce’s rally is supported by several factors. Civil aviation has rebounded to pre-war levels, boosting revenue from long-term service contracts. Management has guided for operating profit of £4.0–£4.2 billion and free cash flow of £3.6–£3.8 billion for the current year.
Falling aluminium prices—down 16% from their 2026 high—are also improving margins for the engineering group. Additionally, the company is benefiting from the artificial intelligence boom: its power systems business has a backlog of £7.3 billion from data center demand. The small modular reactor (SMR) division continues to gain traction, most recently winning a bid for a Swedish project.
Rolls-Royce’s valuation also appears attractive relative to rival GE, adding to investor interest. For more on the company’s recent performance, see Rolls-Royce Soars: 5 Catalysts Driving Shares Past 1,500p.
Broader Market Context
The gains in IAG and Rolls-Royce come amid a broader market rally, with the FTSE 100 edging higher and US futures surging. The AI-driven demand for data center infrastructure has also lifted other industrial and tech stocks, as seen in MasTec Shares Surge 6% on $1.65B Superior Deal to Expand AI Data Center Reach.
While the near-term outlook for both stocks appears positive, risks remain. For IAG, a reversal in oil prices could quickly erase margin gains. For Rolls-Royce, any renewed geopolitical shock or aviation downturn could pressure guidance and cash flow targets.
This article is for informational purposes only and does not constitute financial advice.
