Free NewsletterPro Login

Rising Jet Fuel Costs Push Up Borrowing Prices For U.S. Airlines

Published Sep 4, 2026
Share:
Summary:
  • High-yield airline bond spreads are hovering near 4 percentage points, more than twice their January level.
  • Gulf Coast jet fuel hit its priciest point in months amid the escalating US-Iran fight, upping perceived risk for lenders.
  • Big carriers can lean on premium and international sales, while smaller, domestic-focused airlines face tougher questions from creditors.

What changed in the debt market

Risk premiums on below-investment-grade airline debt are now around 400 basis points, exceeding their level at the start of the year by more than twofold. Investors are asking for richer payouts to hold notes from names like JetBlue Airways Corp. and American Airlines, which has pushed up funding costs.

The divergence showed up early in 2024. United Airlines Holdings Inc. sold $2 billion of bonds in two February offerings before the war began, while Alaska Air Group Inc. tapped markets for $500 million in May. Even with nearly the same BB ratings, Alaska had to offer 6.5% on a five-year deal, compared with the 5.375% yield on United's $1 billion five-year slice.

Why fuel is the swing factor

As the conflict involving Iran intensifies, jet fuel prices have jumped, and Gulf Coast benchmarks reached their highest in months this week. Because fuel sits alongside labor as one of the biggest line items for carriers, lenders see more risk when energy costs climb. "Roughly 20% of costs are jet fuel," said Joseph Rohlena, lead analyst for North American airlines at Fitch.

A global refining squeeze - tied to wars in Ukraine and the Middle East - could keep fuel elevated. Chad Campbell, a Barings managing director who covers sub-investment-grade names in industrials, transportation and aviation, said that uncertainty points to higher costs for refinancing and new borrowing ahead. "Now, with the conflict escalating and lasting longer than anticipated, future borrowing transactions are likely to require a premium to compensate for heightened risk," he said.

How it splits the industry

Big networks have more levers. United, like Delta, said strong demand, especially for premium cabins and international trips, is helping counter higher costs, even as large U.S. airlines have trimmed earnings outlooks. Carriers have also pushed through higher prices: Delta Air Lines Inc. and JetBlue Airways saw revenue per available seat mile climb 11% in the second quarter versus a year earlier. In July, Delta Chief Executive Officer Ed Bastian said fares will likely stay elevated.

Smaller domestic players serving price-sensitive travelers have less room to pass along fuel spikes. "The fare increases have been quite successful," said Savanthi Syth, an equity analyst who covers airlines at Raymond James. But she added, "we do wonder what happens to the JetBlues and the Frontiers of the world if things get worse or stay really bad in terms of jet fuel prices." The strain has already shown up: following a rocky stretch that included multiple bankruptcy filings, Spirit Aviation Holdings Inc. halted operations earlier this year.

A few minutes a day is enough to stay genuinely informed about your money. Join Market Briefs free and start tomorrow.

What investors are watching

With little relief showing up in fuel markets, bondholders are dissecting balance sheets at the smaller end of the industry. JetBlue's 9.875% notes secured by its loyalty program slid to roughly 84 cents per dollar in July from about 104 cents in February, after the company asked investors to an August session focused on liquidity and its balance sheet. After the 2031 notes rebounded partially in the wake of the company's second-quarter earnings call held later that month, they were back down to about 84 cents by Thursday.

Those JetBlue bonds account for 12% of the high-yield airline bond index, the second-largest weight. The company is prioritizing revenue growth and cost discipline since fuel is outside airlines' control, said spokesperson Derek Dombrowski.

Volatile prices make it tough to know how long wider spreads will last. "They feel more confident about the bookings that they're going to get for the next six months of the year," said Geoffrey Wilson, an analyst at S&P Global Ratings. "The one thing that remains the big uncertainty is fuel costs."

The takeaway for your wallet

Airline borrowing is getting pricier, and the fuel wildcard is keeping pressure on smaller, more domestically focused carriers. Debt from these names is already feeling it, while larger players are leaning on premium seats and long-haul routes to cushion the blow. If you are exposed to airlines, expect funding costs and bond prices to keep reacting to fuel headlines and any further flare-ups in the conflict. Keep an eye on upcoming deals for the risk premiums Campbell flagged.

Disclosure

Recent News

1 2 3 … 105

Get Market Briefs delivered to your inbox every morning for free!

No fluff. No noise. No politics. Just finance news you can read in 5 minutes.

Blogs

October 16, 2026
How Boring Math Makes You Rich: The Briefs Money Spreadsheet, Explained
  • Briefs Money shows you what to do with every paycheck, and in what order: how much to spend, save, and invest, when to build an emergency fund, and which debt to pay off first.
  • The Climb to Wealth course walks you through the system step by step, and the Personal Finance Spreadsheet is where you track your own numbers.
  • Investing is one piece of building wealth. The system that gets money to your investments, and keeps it there, decides the outcome.
Read More
October 16, 2026
Common Investing Mistakes: Why a Stock Grade Is One Tool, Not the Whole Toolkit
  • The Briefs Score shows growth, income, and wealth preservation investors how well a stock fits their goal, with a separate letter grade for each one.
  • The most common mistake is treating the letter as an instruction. An A tells you a stock scores well for one goal, not that you should buy today.
  • Research works best as one input in a process you own. The grade shows how a stock stacks up. You supply the goal, the timeline, and the rules for being wrong.
Read More
October 16, 2026
How to Read a Company's Numbers Without a Finance Degree (Using Briefs Terminal)
  • Briefs Terminal lets you size up any public company in about ten minutes: what the stock costs, what it earns, how fast sales are growing, and what it pays you, all on one page.
  • It lines those numbers up against the company's closest competitors for you, so you can tell if a number is impressive or just average.
  • Below that are the income statement, balance sheet, and cash flow statement from the company's SEC filings, the latest news, and transcripts of its earnings calls.
Read More
October 16, 2026
What Type of Investor Am I? The Three Investor Archetypes, Explained
  • Briefs sorts its stock grades and monthly reports by three investor goals: growth, income, and wealth preservation. Pick yours and you know which report and which grade to read first.
  • Growth investors want stocks that beat the S&P 500. Income investors want to get paid in cash. Wealth preservation investors want stocks that hold up when the market drops.
  • The same stock can score an A- for one goal and a D- for another, so picking your goal comes before picking any stock.
Read More
October 16, 2026
How to Build a Stock Watchlist That Isn't Just Stocks You Heard About
  • A watchlist on Briefs Terminal lets you group stocks by the idea you're tracking and follow each one's price, one-day move, and 52-week high and low in one place.
  • Each list has its own name and description, so you always know why a stock is on it, and you can make as many lists as you have ideas.
  • The monthly growth, income, and wealth preservation reports under the Briefs Research tab hand you new themes to track that you didn't hear about online.
Read More
October 16, 2026
How to Choose an ETF That Matches Your Idea (Using the ETF Planning Tool)
  • The ETF planning tool takes an idea like "I want to invest in fast food companies," asks what you mean, and finds the ETFs that match, with the reasons, the holdings, and the sources.
  • Build a Plan then shows what your money could grow to in those ETFs over the years you choose, with conservative, expected, and optimistic estimates next to the S&P 500.
  • It gets you from an idea to an actual plan without researching dozens of companies one at a time.
Read More
October 16, 2026
Is This Stock a Good Buy? How to Use the Briefs Score to Tell If a Stock Fits the Way You Invest
  • The Briefs Score shows growth, income, and wealth preservation investors how well a stock fits their goal, with a separate letter grade for each one.
  • One stock can score very differently for each. Nvidia showed an A- for growth and a D- for income, because it grows fast and pays almost no dividend.
  • Seven sub scores under each grade show what earned the letter, so you can see exactly where a stock is strong or weak for your goal.
Read More
October 16, 2026
How to Tell an Asset From a Liability: The One Question to Ask Before You Buy Anything
  • The typical American household earned more in 2025 than in any year on record, yet only 30% of Americans say they could pay a surprise $1,000 bill from savings, so the problem isn't income but what the income gets spent on.
  • An asset puts money in your pocket and a liability takes money out, and the wealthy buy assets first, then let the assets pay for the fun stuff.
  • Before you buy anything, ask one question: does this put money in my pocket, or take money out of my pocket? Then you need a plan for the money you keep.
Read More
October 16, 2026
How to Build Your First $2,000 Emergency Fund and Wipe Out Every Debt Over 10%
  • Your first money goal isn't investing, it's $2,000 in its own account named Do Not Touch, built by moving 10% of every paycheck into it automatically.
  • More than a third of American adults couldn't cover a $400 surprise bill with cash or savings, according to the Federal Reserve, and that's how one bad day turns into years of credit card payments.
  • Once the $2,000 is there, attack every debt charging more than 10% interest, highest rate first, because you can't out-invest a 22% credit card so paying it off is the investment.
Read More
October 16, 2026
How to Invest Through a Crash: 3 Rules From the Worst-Timed Investor Alive
  • Meet Bunty, a fictional investor with the worst timing in history: he put $100,000 into the market in four chunks right before four crashes, never sold, and by 2025 it had grown to more than $500,000.
  • Investors who jump in and out of the market miss its best days, and missing just a handful of those days can cut your final result roughly in half.
  • The fix is ABB, Always Be Buying: you buy on a schedule through booms, crashes and scary headlines, which matches the market, and beating it takes knowing where the money is moving first.
Read More
1 2 3 … 29
Share via
Copy link