Air Europa has been recognized as the only Spanish airline among the world’s most efficient carriers, according to Cirium’s EmeraldSky 2025 report. The consultancy awarded the Globalia-owned airline a Gold rating, placing it fourth globally with emissions of 53.9 grams of CO2 per available seat kilometer (ASK) in 2025, an improvement of 0.6% from the previous year.
This positions Air Europa as the sole regular Spanish operator in the top ten and the only full-service airline in the leading efficiency group. Ahead of it are Scoot from Singapore, Hungarian low-cost carrier Wizz Air, and Tui Airways. Iberia ranked 13th with a Bronze rating.
The ranking draws from real operational data on CO2 emissions per ASK. Air Europa attributes its performance to initiatives like the OptiClimb application, which provided crews with tailored climb speed instructions, avoiding over 10,000 tons of CO2 emissions in 2025 without delaying flights. The airline also uses single-engine taxi-out (SETO) and taxi-in (SETI) procedures since 2023 to cut ground fuel use. Additionally, it partners with Chooose for a carbon offset program, giving passengers details on flight emissions and options to buy certified credits.