The potential savings offered during AIRAC cycle 2604 compared to the equivalent AIRAC cycle in 2025:
European Route Network Improvement Plan (ERNIP) - Monitoring Report - AIRAC 2604
16 April 2026 - 13 May 2026
Our monthly European route network implementation plan (ERNIP) monitoring report provides an overview of the airspace design improvements applied by States during the past AIRAC cycle and an analysis of their potential and real-world effects.
Potential routes offered
619,000
NMs
flown less
3,713
tonnes
less fuel used
12,375
tonnes
less CO2 emitted
€
3,094,000
saved
Real-world performance
Based on our filed flight plan indicator, the actual gains calculated during AIRAC 2604 compared to the equivalent AIRAC cycle in 2025 were:
147,000
NMs
flown less
884
tonnes
less fuel used
2,947
tonnes
less CO2 emitted
€
737,000
saved
Key reasons
Potential causes having an impact on flight planning/ airline choices:
- Weather
- Airspace availability
- Industrial action
- Closed areas in adjacent airspace(s)
- Capacity issues in the network
For more details, download our monitoring report.