Ryanair (RYAAY): the best airline in my screener
2026-06-24 · By Lubin Danilo, founder of Lubin Investment
Ryanair is Europe's number one airline by passengers, with a free cash flow margin of 11.6%, no net debt, and a capital return of 20.6%. Its ultra-disciplined low-cost model, single Boeing 737 fleet and obsessive cost structure allow it to generate cash where competitors destroy value. Score 9 out of 10 in my screener.
- Score 9/10 in my screener: the only airline to pass my financial quality criteria.
- Positive and growing free cash flow: FCF margin of 11.6%, 5-year FCF per share CAGR of 8.9%.
- Sound balance sheet: net cash position (no net debt), Cash ROCE of 20.6%.
- Reasonable valuation: P/FCF of 18.8x for the best cash machine in global aviation.
- Real risks: fuel (35-40% of costs), pilot strikes, European regulation to monitor.
Why I generally avoid the airline sector
When I run the airline sector through my screener, the result is systematically brutal. Delta, United, Air France-KLM: zero, or close to it. The reason is simple. Aviation is one of the most capital-intensive sectors that exists: every plane costs tens of millions of dollars, airport slots are worth a fortune, and maintenance never stops. As a result, almost all the cash generated goes straight back into the production tool. Free cash flow, the money that truly remains in the bank after paying every bill including investment, is often negative or erratic in traditional aviation. Add brutal cyclicality (crises, pandemics and oil shocks hit airlines first) and chronic debt, and you have a sector that Warren Buffett himself called a structural value destroyer.
And yet, one company in the sector passes my 10 criteria with a score of 9/10. Just one. Ryanair.
The low-cost model: a discipline the majors cannot copy
Ryanair Holdings plc, listed as RYAAY on NASDAQ (as an ADR) and RYA.I on Euronext Dublin, carries more than 200 million passengers a year across 37 countries via 245 airports. It is Europe's busiest airline. But size is not what interests me. What interests me is the cost structure.
Ryanair's low-cost model rests on three pillars. First: secondary airports. Ryanair lands at Beauvais rather than CDG, at Bergamo rather than Milan Linate. These airports are less congested, cheaper in fees, and often offer subsidies to attract traffic. The result: airport costs structurally below those of traditional carriers. Second: a single fleet. Ryanair only operates one type of aircraft, the Boeing 737. One fleet means unified pilot training, simplified maintenance and standardized spare parts. That is cost discipline taken to the extreme. Third: ancillary revenue, meaning everything outside the base ticket price. Checked bags, priority boarding, hotel bookings, car rentals: these revenues are a growing share of turnover and allow very low ticket prices while preserving margin.
Michael O'Leary has run Ryanair since 1994. Provocative, outspoken, obsessive about costs: he is the architect of this model. His longevity at the helm is a sign of stability. He does not manage an airline; he manages a cost-compression machine.
What the numbers say: why Ryanair is in a category of its own
My screener evaluates 10 objective financial criteria. Ryanair validates 9 of them. Here is the raw data.
| Criterion | Value | Reading |
|---|---|---|
| P/FCF | 18.8x | Price paid for each dollar of annual free cash flow |
| Market cap | ~$30.3bn | Total market capitalization |
| Price | $63.73 | RYAAY share price on NASDAQ |
| FCF margin | 11.6% | Share of revenue converted to free cash |
| Net margin | 14.0% | Net profit relative to revenue |
| 5-year revenue CAGR | 13.0% | Average annual revenue growth |
| 5-year FCF/share CAGR | 8.9% | Annual free cash flow per share growth |
| Cash ROCE | 20.6% | Return on capital employed (cash basis) |
| Net debt | Negative (-0.69) | Net cash: the company holds more cash than debt |
| Screener score | 9/10 | Only airline at this level in my screener |
Start with the P/FCF (price-to-free-cash-flow), the ratio I use to assess valuation. It measures how many years of free cash flow you are paying today to own the business. A P/FCF of 18.8x is reasonable for a company growing at 13% per year with a Cash ROCE of 20.6%. It is neither cheap nor excessive. It is the price of rare quality in a sector that normally destroys value.
An FCF margin of 11.6% is remarkable for an airline. For comparison, most majors such as Air France or United show FCF margins close to zero, or even negative over the cycle. At Ryanair, for every 100 dollars of revenue, 11.60 end up as genuinely available cash to buy back shares, repay debt or invest. That is proof the low-cost model actually works, not just on paper.
The negative net debt deserves an explanation. A net debt to FCF ratio of -0.69 means Ryanair holds more liquid assets than net financial debt. That is a net cash position, an extremely rare thing in a sector accustomed to borrowing heavily to fund fleets. Ryanair has financed its growth without wrecking its balance sheet.
The only missing criterion: working capital, and why it makes sense
My screener gives a score of 9/10 rather than 10/10. The missing criterion is the NWC ratio (net working capital ratio). Working capital is the difference between short-term assets (what the company owns or will collect soon) and short-term liabilities (what it must pay soon). A slightly negative working capital means the company owes more in the short term than it has in immediate liquidity.
At Ryanair, the NWC ratio is 0.90, slightly negative. But here is the context: customers pay for their tickets before they board the plane. The company therefore collects millions of ticket payments weeks or months in advance, before paying the corresponding fuel, salaries and fees. This timing gap mechanically creates a negative working capital. It is a sign of market power, not financial fragility. My method is conservative and applies the same filter to every company without exception. Ryanair loses this point not because it is fragile, but because my screener is rigorous.
Why Delta, United and Air France fail where Ryanair succeeds
The question comes up often: why don't the big traditional carriers pass my criteria? The answer is structural. A major like Air France-KLM operates dozens of aircraft types, some of the world's most expensive airport hubs, and complex connection systems requiring large crews. Unit costs are two to three times higher than Ryanair's. The FCF margin is near zero over the cycle. Debt is chronic: Air France-KLM has been nationalized twice in twenty years.
American carriers like Delta or United have a slightly different profile but share the same flaws: extreme capital intensity, brutal cyclicality, and a rigid cost structure (union agreements, pensions, slots at Heathrow or JFK at extraordinary prices). Their balance sheets carry colossal debt. Their FCF is positive at the top of the cycle and negative at the bottom. My screener looks for consistency. It does not find it in traditional aviation.
Ryanair solved this problem through discipline. Not through size, not through prestige. Through obsession with the lowest possible unit cost, repeated for 30 years.
Risks that cannot be ignored
Ryanair is an exception in its sector, but it is not a company without risks. The first risk is fuel. Jet fuel represents between 35 and 40% of Ryanair's operating costs. A major oil shock directly compresses margins. Ryanair partially hedges via financial instruments, but a sustained oil price surge remains the main exogenous risk to the model.
The second risk is industrial relations. Pilot strikes have already cost Ryanair dearly, notably in Ireland and Spain. Michael O'Leary long refused to recognize unions. He finally relented in 2018 under the pressure of coordinated strike waves. Social risk is structural in aviation and can flare up at collective bargaining renewals.
The third risk is regulatory. The European Commission monitors low-cost carriers' pricing practices, particularly ancillary fees sometimes seen as opaque. The environmental agenda (carbon tax, ETS emission quotas) also weighs on long-term costs. Finally, any major crisis (pandemic, geopolitical conflict closing European airspace) hits Ryanair hard: its dependence on short-haul European routes is a geographic and sectoral concentration.
Ryanair's moat: why it is hard to copy
A moat is a company's competitive advantage: what stops a competitor from taking its market share. In low-cost aviation, Ryanair's moat is real but different from that of a software company or a specialty insurer.
It rests first on exclusive agreements with secondary airports that give it long-term negotiated fee advantages. Once in place, these agreements create an entry barrier for any competitor wanting to operate the same routes. It also rests on scale: with 200 million passengers a year, Ryanair obtains among the world's lowest aircraft purchase prices (its 2023 order for 300 Boeing 737 MAX was negotiated with massive discounts). Scale creates cost advantages that smaller operators cannot replicate. Finally, Europe's best-known low-cost brand generates massive direct distribution (the majority of tickets are sold without an agency, without commission). These are real advantages, even if they are less deep than those of a software publisher.
Verdict: 9/10, reasonable valuation, worth watching
Ryanair is an anomaly. In a sector I structurally avoid, it is the only company that passes my quality filters. Its free cash flow is regular and growing. Its balance sheet is sound. Its return on capital is high. Its ultra-disciplined low-cost model is a cost-compression machine that its competitors, weighed down by decades of bad habits, have not managed to replicate.
At a P/FCF of 18.8x, this is not a screaming opportunity. It is a reasonable valuation for a quality asset in a difficult sector. If the price were to correct on an oil shock or a passing crisis of confidence, it could become potentially very interesting to watch closely. For now, I follow it, I note the price, and I wait for the right entry point. That is the whole point of my screener.
FAQ
What is free cash flow (FCF)?
Free cash flow is the money that truly remains in a company's bank account after paying all its operating expenses and investments. It is the number I prefer over accounting profit because it is much harder to dress up.
What does a P/FCF of 18.8x mean?
The P/FCF (price-to-free-cash-flow) measures how many years of free cash flow you are paying to acquire the business at the current price. A P/FCF of 18.8 means you are paying 18.8 times the annual free cash flow. That is reasonable for a company growing at 13% per year with a 20% return on capital.
Why does Ryanair have negative working capital, and is it a problem?
No, it is not a problem in this case. Working capital is negative because customers pay for their tickets in advance, before Ryanair settles its suppliers (fuel, airports, etc.). This timing gap is a sign of market power, not fragility. My screener is conservative and flags this criterion, but it is the only missing point.
Why do Air France or Delta not score as high?
Because traditional carriers suffer from a rigid cost structure, extreme capital intensity, chronic debt and brutal cyclicality. Their free cash flow is often zero or negative over the cycle. Ryanair has solved these problems through cost discipline that its competitors have not managed to replicate.
Is this a buy recommendation on Ryanair (RYAAY)?
No. This article is informational and educational analysis. I share my method and my financial observations, not personalized recommendations. Do your own research and consult a professional if needed.
Voir l'analyse RYAAY sur Lubin Investment
About the author
Written by Lubin Danilo, founder of Lubin Investment. A self-taught individual investor, I have analyzed stocks through their fundamentals for several years and invest my own money with this method. I codified it into a tool that judges a company's quality and its price separately, using criteria drawn from the financial literature (Warren Buffett, Michael Mauboussin, Aswath Damodaran).