Vietjet leads Southeast Asia in emissions efficiency on intra-regional flights

(Ho Chi Minh City, April 21, 2026) – Vietjet has been recognized as the most emissions-efficient airline for intra-Southeast Asia operations, according to the 2025 Flight Emissions Review by Cirium, a leading global aviation data and analytics provider. This achievement reinforces Vietjet’s position among the region’s most efficient and sustainable airlines.

The results are based on Cirium’s EmeraldSky methodology, which uses CO₂ per Available Seat Kilometre (CO₂/ASK) as the primary metric—reflecting how much fuel an airline burns relative to the passenger capacity it operates. According to the report, Vietjet recorded 64.5 grams CO₂/ASK, placing first in the Southeast Asia intra-regional ranking, ahead of Singapore Airlines (66.7 grams), Lion Air (67.1 grams), and other carriers.

The ranking compares emissions performance on flights operating entirely within Southeast Asia, where the predominance of short- and medium-haul routes makes fuel efficiency more challenging to optimize. Under comparable operating conditions, Vietjet’s ability to maintain the lowest emissions intensity highlights its strength in optimizing operations across the entire value chain, from aircraft configuration and network planning to load management.

A new-generation fleet forms a key foundation for Vietjet’s emissions performance. The airline primarily operates Airbus A320 and A321 aircraft, including the latest “NEO” variants, which deliver approximately 15–20% fuel savings compared to previous-generation models. With one of the youngest fleets in the region, Vietjet significantly optimizes fuel consumption and CO₂ emissions per flight. Alongside fleet investment, the airline enhances technology adoption across its operations, from flight data analytics platforms such as SkyBreathe to fuel optimization initiatives like SFCO₂, improving efficiency across its entire network.

Previously, Vietjet was named among the Top 7 global airlines for sustainability in 2025 by AirlineRatings, in recognition of its efforts in emissions reduction, fuel efficiency, and green transition. The airline has also received ESG (Environmental, Social, and Governance) recognition in markets such as Taiwan (China).

The Flight Emissions Review is Cirium’s annual ranking, providing an independent assessment of the world’s 100 largest airlines based on actual operational data. It enables transparent comparisons of emissions performance across airlines by scale and geographic region, serving as a benchmark for the global aviation industry.