A Step-by-Step Guide to Understanding the Surge in Ryanair's Global Emissions

Introduction

Aviation remains one of the few sectors in Europe that largely escapes carbon pricing, allowing emissions to climb unchecked. New analysis by Transport & Environment (T&E) reveals that Ryanair’s global emissions in 2025 are 50% higher than in 2019—the largest increase of any airline worldwide. This guide walks you through the key factors behind this surge, the implications for climate policy, and actionable insights. You'll learn how to dissect the data, identify systemic gaps, and evaluate possible solutions—all while staying grounded in the same facts from the original report.

What You Need

• Basic understanding of carbon pricing: Familiarity with the EU Emissions Trading System (ETS) helps.
• Access to T&E’s analysis: The original report provides raw data on sector-wide and airline-specific emissions.
• Critical thinking: To question why aviation is exempt from full carbon pricing.
• Optional: A spreadsheet or notebook to track key numbers (e.g., 2019 vs. 2025 emissions).

Step-by-Step Guide

Step 1: Understand the Regulatory Loophole

Europe’s aviation sector currently benefits from a major exemption: two-thirds of its CO₂ emissions are not covered by the EU ETS. Unlike power plants or factories, airlines pay for only a fraction of their carbon output. This regulatory gap is the foundation for the emission increase. To grasp why Ryanair’s numbers are so high, you must first recognize that the market mechanism designed to cap emissions is largely ineffective for air travel. Jump to Step 2 to see how this plays out in practice.

Step 2: Identify the Scale of the Increase

According to T&E, total emissions from flights departing European airports in 2025 exceeded pre-pandemic levels for the first time. Ryanair alone saw a 50% increase relative to 2019—the largest percentage jump of any global airline. Compare this to the overall aviation sector, which also rose but not at such a dramatic rate. To verify, check the T&E data: look for absolute CO₂ figures (e.g., million tonnes) and calculate the percentage change yourself. This step highlights that Ryanair’s growth is not just a recovery—it’s an acceleration.

Step 3: Analyze the Drivers Behind the Surge

Several factors explain Ryanair’s disproportionate rise:

• Aggressive expansion: The airline added numerous new routes and increased flight frequency across Europe.
• Low-cost model: By keeping fares cheap, Ryanair stimulates demand, leading to more passengers and more flights.
• Lack of carbon cost internalization: Since aviation escapes full carbon pricing, Ryanair does not face a financial penalty for its emissions, encouraging continued growth.
• Inefficient aircraft utilization: Although newer planes are fuel-efficient, rapid expansion can offset those gains.

Use these drivers to create a mental model: a loop where cheap prices → high demand → more emissions → no cost incentive to change.

Step 4: Evaluate the Implications for Climate Policy

Ryanair’s 50% increase exposes a critical failure in European climate governance. If the ETS covered all aviation emissions, Ryanair would have had to purchase allowances for those extra tonnes, raising costs and potentially slowing growth. The current loophole means that the sector is effectively subsidized to pollute. Ask yourself: what if the same rule applied to cars or factories? The comparison reveals an inconsistency in how the EU treats different polluters. Also, note that the post-pandemic rebound is not uniform—Ryanair’s strategy specifically capitalizes on regulatory gaps.

Step 5: Propose and Compare Solutions

Based on the facts, possible remedies include:

• Full ETS coverage: End the exemption for aviation, forcing airlines to pay for all emissions.
• Frequent flyer levy: Tax high-emission travelers to curb demand.
• Mandatory fuel efficiency standards: Require airlines to adopt cleaner technologies at a faster pace.
• Invest in alternative fuels: Scale up sustainable aviation fuels (SAF) with binding targets.

Each option has trade-offs. For instance, full ETS coverage might increase ticket prices, affecting lower-income travelers. Compare the effectiveness of these measures against Ryanair’s business model. Which approach would most directly reduce the 50% gap? Use your analysis from previous steps to weigh pros and cons.

Step 6: Draw Conclusions for the Future

The T&E report implies that without policy changes, aviation emissions will continue to rise. Ryanair’s case is a warning: regulatory loopholes allow a single airline to produce dramatically more CO₂. As a final step, consider what this means for climate targets. If Europe aims for net-zero by 2050, the aviation sector must be part of the solution—not a loophole. Share your findings with others to raise awareness.

Tips & Conclusion

• Stay skeptical: Always verify emission claims from airlines against independent sources like T&E.
• Look beyond averages: Aggregate sector data can hide outliers like Ryanair’s 50% increase.
• Advocate for policy: Contact your MEP to demand full ETS coverage for aviation.
• Reduce your own footprint: Consider alternatives to flying, or offset unavoidable trips.
• Track updates: Follow T&E for annual emission reports—the trend may accelerate.

In conclusion, understanding the surge in Ryanair’s emissions requires dissecting regulatory failures, market incentives, and the airline’s aggressive strategy. By following these steps, you can turn a complex report into actionable knowledge and help push for meaningful climate action.