- Delta Air Lines leads airline market capitalisation at $52.08bn (€44.27bn).
- United Airlines Holdings ranks second at $32.71bn (€27.80bn).
- Ryanair ranks third at $27.44bn (€23.32bn).
- International Airlines Group stands at $22.16bn (€18.84bn).
- IndiGo is the highest-ranked Indian airline at $18.81bn (€15.99bn).
Delta Air Lines has led the global airline market capitalisation ranking at $52.08bn (€44.27bn) according to CompaniesMarketCap data. United Airlines Holdings ranked second at $32.71bn (€27.80bn) followed by Ryanair at $27.44bn (€23.32bn). International Airlines Group stood at $22.16bn (€18.84bn) and Southwest Airlines at $20.96bn (€17.82bn).
IndiGo ranked as the highest Indian airline at $18.81bn (€15.99bn). Air China stood at $17.43bn (€14.82bn) and Singapore Airlines at $16.26bn (€13.82bn). The ranking includes full-service airlines, low-cost carriers, regional airlines and airline groups. Private or state-owned carriers such as Emirates, Qatar Airways and Ethiopian Airlines are excluded because they lack public market capitalisations.The ranking highlights the importance of connectivity through GDS, NDC and direct APIs for OTAs and aggregators. Market values fluctuate with fuel prices, economic conditions and tourism demand. The data reflects the diverse nature of the modern airline industry
