The low-cost carrier is doubling down on a familiar partner, signing for hundreds of new-generation engines and decades of maintenance in one move. Behind the contract sits a French-led manufacturer whose powerplant has become the default choice for most of the world’s single-aisle jets.
Pegasus signs record engine deal for its 737-10 fleet
Pegasus Airlines has finalised an agreement with CFM International for 300 LEAP‑1B engines, including spare units and a long-term support package.
This engine order mirrors the scale of the airline’s historic 100‑strong Boeing 737‑10 purchase, announced in December 2024. That aircraft deal was the largest in Pegasus history and one of the most ambitious single-aisle expansion plans in Europe.
CFM’s LEAP‑1B, developed in France and the US, now sits at the heart of one of the biggest low-cost fleet upgrades of the decade.
For a carrier built on tight schedules and high utilisation, the contract is less about shiny kit and more about locking in predictability. Every unscheduled engine removal means lost flights, refunds, and crew repositioning. A combined engine and maintenance deal cuts that risk.
An old friendship in a brutally competitive market
A long-running Pegasus–CFM partnership
Pegasus is not switching horses mid-race. The Turkish carrier grew up on CFM engines, starting with the CFM56 series that powered generations of Boeing 737 and Airbus A320 aircraft.
Over time, its fleet moved through several variants — CFM56‑3, CFM56‑5B, CFM56‑7B — before shifting toward the LEAP family. That continuity matters. It gives Pegasus familiarity with performance, maintenance patterns, and spare parts management.
There is also a milestone that aviation insiders like to mention: in July 2016, Pegasus became the first airline on earth to operate the LEAP engine in commercial service, on a flight between Istanbul and Antalya. The airline effectively acted as an early proving ground for CFM’s new technology.
That early bet now feeds back into preferential pricing and deep technical cooperation — advantages that rival engine makers struggle to match.
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Why the LEAP‑1B fits a low-cost workhorse
The LEAP‑1B, chosen for the Boeing 737 MAX family, is not a simple upgrade of the CFM56. It represents a generational leap in engine design.
- Composite fan blades reduce weight and tolerate high stresses.
- Ceramic matrix composites in hot sections allow higher temperatures and better efficiency.
- Advanced health-monitoring systems track wear and spot anomalies early.
CFM advertises about 15% lower fuel burn and roughly the same reduction in CO₂ emissions compared with previous-generation engines. For a low-cost carrier, that margin is huge: fuel is typically the single largest operating expense after staff.
On dense, short and medium routes, a 15% fuel saving can decide whether a fare remains profitable or has to rise sharply.
The LEAP‑1B is designed for high-frequency flying with quick turnarounds, exactly how Pegasus sweats its assets. That design focus — robust performance under constant use — is one reason the engine has secured such a dominant share of the single-aisle market.
Boeing 737‑10: more seats, same runway
A capacity lever in crowded markets
The Boeing 737‑10 is the largest model in the 737 MAX line. It can seat up to around 230 passengers, depending on layout, allowing Pegasus to carry more travellers on each rotation without adding new flight numbers.
On busy Turkish and regional routes, airport slots and ground capacity can be tight. Increasing seats per movement gives the airline a way to grow without relying on extra time on the runway or additional gates.
The LEAP‑1B supports this strategy by keeping operating costs per seat in check. Higher capacity normally means higher fuel burn, but better efficiency spreads that cost across more passengers.
A young fleet as a structural advantage
Pegasus already operates one of the youngest fleets in the industry, with an average age of around 4.9 years. That position brings several benefits:
- Lower fuel burn than older jets.
- Fewer unexpected technical issues.
- Easier compliance with tightening environmental rules.
By renewing and expanding its fleet with 737‑10s and LEAP engines, Pegasus leans into that advantage. A modern fleet acts as a buffer against future fuel price spikes and climate-linked regulation, both of which can hit legacy carriers with older aircraft hard.
How a €3–5 billion deal is built
Engines first, then decades of service revenue
Neither Pegasus nor CFM has disclosed the exact value of the contract. Industry benchmarks, though, allow a rough estimate.
List prices for a LEAP‑1B typically sit in the €12–14 million range per engine. Airlines that order in bulk and maintain long relationships often secure discounts of 40–50% off catalogue. Using those assumptions, the pure engine hardware for 300 units might fall somewhere near:
- Gross list value: about €3.6–4.2 billion
- After large-customer discounts: roughly €1.8–2.4 billion
Then come the layers that really matter to manufacturers’ bottom lines: spares and long-term maintenance contracts. Over a 20–30 year operating life, service deals often match or exceed the initial sale value.
Once maintenance and spare engines are added, analysts see a realistic total contract value of between €3 and €5 billion.
For CFM, this is not just a big sale; it is a multi-decade revenue stream. For Pegasus, it is a hedge against inflation in labour, materials, and shop-visit costs.
The French-led giant behind the deal
CFM’s grip on the single-aisle engine market
CFM International is a 50–50 joint venture between France’s Safran Aircraft Engines and US-based GE Aerospace. It dominates engines for single-aisle, or “narrow-body”, aircraft — the workhorses of global short and medium-haul travel.
By 2025, more than 4,000 LEAP engines had been delivered across different variants. The programme has become one of the fastest-growing in commercial aviation history.
Market estimates show why competitors feel the pressure:
| Segment | Engine maker | Estimated 2025 share | Main programmes |
|---|---|---|---|
| Single-aisle | CFM International | about 70–75% | CFM56, LEAP‑1A, LEAP‑1B, LEAP‑1C |
| Pratt & Whitney | about 25–30% | PW1100G, PW1500G, PW1900G | |
| Others | under 5% | Niche and ageing fleets | |
| Widebody | Rolls‑Royce | about 50–55% | Trent XWB, Trent 7000, Trent 1000 |
| GE Aerospace | about 35–40% | GE90, GEnx | |
| Pratt & Whitney | about 10–15% | PW4000 (declining fleets) |
In total commercial aviation, CFM is estimated to hold around 45% of the market by installed fleet, thanks largely to its single-aisle stronghold. Rolls‑Royce leads on long-haul widebody aircraft, but that segment is smaller in unit numbers.
Why Airbus still benefits when Boeing wins
While this particular contract is tied to Boeing’s 737‑10, the LEAP family also powers Airbus A320neo aircraft through the LEAP‑1A variant. On both sides of the Atlantic, airlines that pick CFM often like the idea of having the same manufacturer behind different fleets.
The more LEAP engines fly, the richer the operational data set becomes. That feedback loop helps CFM refine maintenance intervals and software tweaks, indirectly improving reliability for both Airbus and Boeing operators. A Turkish low-cost carrier, a US major, and a European flag carrier all benefit from the same growing knowledge base.
What this means for passengers and investors
Ticket prices, noise and emissions
Passengers will not see the LEAP‑1B, but they will feel its effects. Lower fuel burn gives airlines room to keep fares competitive, especially on leisure-heavy routes where price sensitivity is high.
Noise and local emissions also fall with the latest engine generation. That matters for airports battling with night curfews and environmental opposition. Quieter, cleaner aircraft can secure more flexible operating conditions, which in turn support more frequent flights or better timings.
Key terms worth knowing
Two expressions appear regularly around these deals:
- Single-aisle (narrow-body): aircraft with one central aisle, like the Boeing 737 and Airbus A320, mostly used on flights of one to six hours.
- Long-term service agreement (LTSA): a contract where the engine maker looks after maintenance over many years, often paid per flight hour.
Under an LTSA, the manufacturer carries much of the technical risk. If unexpected issues crop up, it has to fix them without blowing up the airline’s budget. In return, it gains predictable income over decades.
Risks and scenarios: what could go wrong, and what could go right
No large engine programme runs entirely smoothly. The LEAP family has already faced teething problems, from component wear to supply chain bottlenecks. If shop visits take longer than planned or spare parts run short, airlines can find themselves short of aircraft during peak seasons.
That is where locking in extra spare engines — as Pegasus has done — becomes a form of insurance. The carrier can rotate engines off-wing for maintenance while keeping aircraft flying with replacements.
On the upside, if fuel prices rise sharply, the value of a 15% efficiency gain grows quickly. A scenario where oil returns to very high levels would punish airlines with older fleets and reward operators that invested early in engines like the LEAP‑1B.
For the French side of CFM, through Safran, this Pegasus deal adds another long-term pillar under its civil aerospace business. Between booming single-aisle demand and a pipeline of support contracts stretching into the 2050s, the company’s dominance in this niche looks set to last, as long as it can keep delivering engines on time and on spec.
