Flying planes is an expensive business, and turning a profit in aviation has never been guaranteed. Fuel costs swing wildly, labor deals eat into margins, and a single bad quarter can wipe out a year’s worth of gains. Still, a handful of carriers have managed to consistently post standout numbers, and the gap between the biggest revenue earners and the biggest profit earners is often surprising.
Based on full-year 2024 and fiscal-year 2024-25 results, which represent the most complete and reliable data available, five airlines and airline groups stand well above the rest when it comes to net profit. This ranking looks at actual bottom-line earnings rather than revenue size alone, since the two don’t always move together.
1. Emirates
Emirates sits comfortably at the top of the profitability table, and it isn’t particularly close. The Dubai-based carrier’s 2024 profit of $4.7 billion was already eclipsed in 2025, as it reported record full financial year profits of $5.2 billion. More recent figures push that even higher, with the airline reporting a record profit before tax of $6.2 billion for the 2025-26 fiscal year, up 7% from the prior year, alongside record revenue of $35.7 billion.
What makes Emirates stand out isn’t just the raw dollar figure but the efficiency behind it. The airline secured an operating margin of over 14% in 2024, edging out Singapore Airlines by a slim margin to claim the top spot among efficient carriers. The airline’s success has been so pronounced that it agreed to a 22-week profit share bonus for all its eligible employees, a rare move in an industry where labor and management often clash over pay.
2. Delta Air Lines
Delta holds the title of most profitable airline in the United States and second most profitable in the world. The carrier ranked second globally with a net profit of $3.46 billion in 2024, closely followed by United Airlines with $3.15 billion in net income. That profit came on the back of an operating revenue of $61.6 billion for the full year, an operating income of $6.0 billion, and an operating margin of 9.7%, with pre-tax income tallying $4.7 billion and around $3.5 billion after tax.
Delta’s leadership team has been vocal about the year’s performance, declaring in January 2025 that “2024 was a great year for Delta,” adding “our people finished the year strong, delivering industry-leading operational and financial performance.” The airline’s momentum has continued into 2025, with the carrier generating $3.8 billion in profit across the first three quarters of 2025 alone, representing about 81% of the US Big Three’s combined earnings. Delta has also become the world’s most valuable airline by market capitalization, a reflection of investor confidence in its long-term earning power.
3. United Airlines
United rounds out the trio of highly profitable American carriers, and its 2024 numbers were genuinely strong. United posted a net income of $3.1 billion, up 20% on 2023, with an adjusted net income of $3.5 billion, pre-tax earnings of $4.2 billion offering a pre-tax margin of 7.3%, full-year revenue of $57.1 billion up 6.2% over the previous year, and an overall profit margin of 5.5%, an improvement over the 4.9% margin seen in 2023.
United also carries significant weight in terms of scale and market value. As the second most valuable airline globally with a market capitalization of $32.8 billion, United operates one of the world’s largest fleets. The airline runs an extensive international network that stretches across Europe and Asia, and its steady improvement year over year suggests the carrier has found a sustainable formula for balancing growth with cost discipline, even as it continues investing heavily in fleet renewal.
4. International Airlines Group (IAG)
IAG, the London-headquartered parent company of British Airways, Iberia, Vueling, and Aer Lingus, put together one of Europe’s strongest financial years in 2024. At the end of 2024, IAG reported a net profit after tax of around $3.1 billion, with the group crediting revenue growth of 9.0% year on year to “our market-leading network, strong brands and operational focus.” The group recorded revenue for the year of around $37 billion.
The group’s structure gives it an advantage that standalone carriers don’t have, since it can pool resources and route networks across multiple national brands. Since its formation in 2011 following the merger of British Airways and Iberia, IAG has since acquired BMI, Vueling, and Aer Lingus, building a portfolio that spans budget, premium, and flag-carrier segments simultaneously. That diversification has helped IAG post an operating margin that, according to some analyses, ranks among the best of the major legacy groups, comfortably ahead of the global industry average.
5. Turkish Airlines
Rounding out the top five is Turkish Airlines, a carrier that has quietly built one of the most profitable long-haul networks in the world. The airline recorded a net profit of $2.4 billion from an income of $22.7 billion in 2024, with total revenues increasing by 8.2% year on year, passenger revenue rising by 4%, and cargo surging around 35% compared with the previous year, helping Turkish Cargo become the world’s third-largest air cargo carrier.
Turkish Airlines’ path to profitability hasn’t been perfectly smooth, and that’s worth noting. In the first quarter of 2025, the airline recorded a net loss of around $47 million, a reversal from the profit of $164 million it posted in the same period the previous year. Even so, the airline’s full-year 2024 result was strong enough to secure its place among the world’s top five earners, and its strategy of flying to more international destinations than any other carrier continues to pay off despite currency pressures from a weakening Turkish lira.
