The Largest Airlines in the World
This article highlights the top 10 largest airlines in the world by market capitalisation and the largest airlines by revenue in 2026, using the latest available data. We’ll also provide insights into the difference between measuring companies by market value and revenue, helping readers understand why an airline may be highly valued by investors even if its annual revenue is smaller than its competitors.
The information in this article is provided for educational purposes only and does not constitute financial advice. Consult a financial advisor before making investment decisions.
Table of Contents
Top 10 Largest Airlines in the World by Market Capitalisation (2026)
Market capitalisation measures the total market value of a publicly traded company. It is calculated by multiplying a company's share price by the number of shares outstanding.
The following are the largest airline companies in the world by market cap. These rankings highlight the biggest airlines in the world from an investor perspective and include major carriers from North America, Europe and Asia.
| Rank | Airline | Country | Market Capitalisation (USD) |
| 1. | Delta Air Lines | United States | $38.71 billion |
| 2. | Ryanair Holdings | Ireland | $33.49 billion |
| 3. | United Airlines Holdings | United States | $29.49 billion |
| 4. | International Airlines Group (IAG) | United Kingdom | $23.73 billion |
| 5. | Southwest Airlines | United States | $22.14 billion |
| 6. | Air China | China | $18.59 billion |
| 7. | InterGlobe Aviation (IndiGo) | India | $18.53 billion |
| 8. | China Southern Airlines | China | $16.70 billion |
| 9. | Singapore Airlines | Singapore | $16.44 billion |
| 10. | China Eastern Airlines | China | $15.21 billion |
Market capitalisation figures are approximate as of 11 March 2026. Market cap is subject to change on a daily basis.
1. Delta Air Lines
| Market Capitalisation: $38.71 billion |
Delta Air Lines is currently the largest airline in the world by market capitalisation, reflecting its strong profitability, premium brand positioning and extensive global network.
Founded in 1929, Delta is one of the oldest and most established airline companies in the world. The airline operates a vast network of domestic and international routes, with major hubs in Atlanta, Minneapolis, Detroit and New York.
It has been one of the strongest performers among global airline stocks since the pandemic, supported by high-margin premium cabins and robust demand for international travel.
2. Ryanair
| Market Capitalisation: $33.49 billion |
Ryanair is the largest airline in Europe by market capitalisation and one of the most successful low-cost carriers in the industry.
Founded in 1984, the airline has built its business around an ultra-low-cost model, allowing it to become Europe’s biggest airline, not only by market cap, but also by passenger numbers.
Ryanair’s strong balance sheet and profitability have helped it gain one of the highest valuations of any airline company in the world.
3. United Airlines Holdings
| Market Capitalisation: $29.49 billion |
United Airlines is the third biggest airline in the world by market cap and operates one of the most extensive route networks globally.
Headquartered in Chicago, United serves over 300 destinations across six continents. The airline has invested heavily in fleet expansion and premium offerings, helping to improve investor confidence and drive share price growth.
Alongside Delta and American Airlines, United forms part of the traditional “big three” US carriers.
4. International Airlines Group
| Market Capitalisation: $23.73 billion |
International Airlines Group (IAG) is one of the largest airline companies in the world and one of Europe’s leading airline groups.
Formed in 2011 after a merger between the flag carriers of the United Kingdom and Spain, IAG owns several major airlines, including:
- British Airways
- Iberia
- Aer Lingus
- Vueling
The group benefits from strong positions in key international markets, particularly transatlantic travel between Europe and North America.
5. Southwest Airlines
| Market Capitalisation: $22.14 billion |
Southwest Airlines is the largest low-cost airline in the United States. Founded in 1967, Southwest pioneered the low-cost airline model and remains the largest domestic carrier in the US by passenger numbers.
Its simple fleet structure and strong brand have helped it remain one of the most valuable airline companies globally.
6. Air China
| Market Capitalisation: $18.59 billion |
Air China is the flag carrier of China and one of the country’s “big three” state-owned airlines.
Based in Beijing, the airline operates an extensive domestic network alongside long-haul international services.
Despite challenges in recent years, Air China is one of the largest airline companies in Asia by market value.
7. InterGlobe Aviation (IndiGo)
| Market Capitalisation: $18.53 billion |
InterGlobe Aviation, which operates under the IndiGo brand, is the largest airline in India and one of the fastest-growing airline companies in the world.
IndiGo dominates the Indian domestic aviation market and has benefited from the country’s rapidly growing middle class and increasing demand for air travel.
Its strong growth prospects have helped make it one of the biggest airline companies globally.
8. China Southern Airlines
| Market Capitalisation: $16.70 billion |
China Southern Airlines is Asia’s largest airline by fleet size and another of China’s major state-owned carriers.
The airline operates a vast domestic network and serves international destinations across Asia, Europe and North America.
9. Singapore Airlines
| Market Capitalisation: $16.44 billion |
Singapore Airlines is widely regarded as one of the world’s leading premium carriers and one of the most valuable airlines in Asia.
It's known for its high-quality service and strong global brand, helping it maintain a high valuation relative to its size.
10. China Eastern Airlines
| Market Capitalisation: $15.21 billion |
China Eastern Airlines is headquartered in Shanghai and is one of China’s most important airline companies.
The airline plays a key role in connecting China’s financial centre with major global cities.
Biggest Airlines in the World by Revenue (2026)
Whereas market cap reflects a company’s market value, revenue measures its total sales, reflecting the scale of a company’s operations.
The largest airlines by revenue are ranked below using the latest full-year financial results published by each publicly traded airline group at the time of writing. These figures are taken directly from the airlines’ earnings releases. Where revenue was reported in a currency other than USD, the values have been converted.
* Exchange rate as of 9 March 2026.
Delta Air Lines — Revenue: $63.4 billion
Delta Air Lines reported $63.4 billion in revenue for FY2025, once again placing it top of the list.
Revenue was driven by premium cabin strength and improving international performance. Delta maintains one of the strongest financial profiles among global airlines, contributing to its position as the biggest airline in the world.
United Airlines Holdings — Revenue: $59.1 billion
United Airlines is the second largest airline in the world by revenue, reporting a record $59.1 billion in total operating revenue for the year ended 31 December 2025.
Revenue growth was driven by strong international travel demand, as well as growth in premium cabins and the MileagePlus loyalty programme.
American Airlines Group — Revenue: $54.6 billion
Although it didn’t appear in the top 10 airlines by market cap, American Airlines reported $54.6 billion in revenue for FY2025, which makes it the world’s third largest airline in terms of revenue.
The airline’s high revenue stems from a large domestic network, major international hubs including Dallas-Fort Worth and Charlotte, and high passenger volumes annually.
Lufthansa Group — Revenue: €39.6 billion ($45.8 billion)
Lufthansa Group reported €39.6 billion in revenue for FY2025.
This makes Lufthansa the largest airline group in Europe by revenue and the fourth biggest airline company in the world by this metric. The group comprises Lufthansa, SWISS, Austrian Airlines, and Brussels Airlines.
International Airlines Group (IAG) — Revenue: €33.2 billion ($38.4 billion)
IAG reported €33.2 billion in revenue for FY2025, placing it fifth globally by revenue.
Revenue rose 3.5% in 2025 as strong demand in Latin America and the Spanish domestic market helped offset weaker areas elsewhere.
Airline Rankings Comparison: Market Cap vs Revenue
Market capitalisation and revenue measure two different types of “size.”
Market capitalisation reflects the market’s valuation of a company at a point in time (share price × shares outstanding) and is driven by investor expectations about the company, its future profits, growth and risk.
Revenue (total sales over a reporting period) shows the scale of an airline’s operations and commercial activity but does not reflect profitability or balance sheet strength.
Some of the main reasons an airline can rank highly by market cap but lower by revenue are profitability, margins and growth expectations. Strong margins, predictable cash flow, a valuable loyalty programme or favourable investor sentiment might lift valuation even if absolute sales are smaller.
Conversely, a carrier can generate large passenger volumes and healthy revenue while trading at a lower market value because of thinner margins, higher capital intensity or perceived risks.
Low-cost carriers that sustain superior efficiency often enjoy higher price-to-sales (P/S) or price-to-earnings (P/E) multiples than full-service legacy carriers. An illustrative case is Ryanair; its low-cost model, robust balance sheet and strong cash generation help produce a market cap that outstrips many larger-revenue legacy groups.
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FAQ: Largest Airlines in the World
Which is the largest airline in the world by market capitalisation?
Delta Air Lines. As of the 11 March 2026, Delta Air Lines is the largest airline in the world by market capitalisation. Its market cap is around $38.71 billion at the time of writing.
Which is the biggest airline in the world by revenue?
Delta Air Lines is the biggest airline in the world in terms of revenue. In the full year 2025, Delta reported total revenue of $63.4 billion.
Why can a low-cost carrier be valued higher than a legacy carrier with bigger revenue?
Valuation can depend on a variety of factors, including margins, cash flows, balance sheet strength and growth prospects. Low-cost carriers may outperform on some of these metrics, meaning that the market may value it higher than legacy carriers despite its top line being smaller.
Are Emirates and Qatar Airways included in these rankings?
No. Privately held or state-owned carriers are excluded from market cap rankings because no public share price exists to calculate market capitalisation. Such carriers may still publish revenue-like figures, but their financial reporting and ownership structures differ from publicly traded groups and are therefore treated separately.
Which is the largest airline in Europe by market capitalisation?
International Airlines Group is the largest airline in Europe by market capitalisation at the time of writing, with a market cap of around $27.5 billion.
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