 The aviation industry has set an ambitious goal of reducing its climate impacts. To achieve this, airlines need to balance their plans with both financial considerations and climate objectives. We developed a multi-objective framework to facilitate climate-aware network design by incorporating the objective to minimize the flight average temperature response, ATR, when optimizing the airline network. Additionally, we analyzed the operational improvements, OIs, which are introduced to improve sustainability in airline operations. These include intermediate stopovers, ISO, and lower flight altitudes. We then evaluated the impact of these OIs on the climate impact of three different airline types, KLM, TAP, and EasyJet. The results showed that airlines can reduce their environmental impact by up to 36%, but at the cost of a 20% reduction in profit. Adducting lower altitude flying with ISO could mitigate their climate impact by up to 49% while reducing profits by around 6%. This study highlights the importance of considering the airline network as a whole and demonstrates the potential benefits of operational improvements from a network perspective. This article was authored by Madi Narafsa, Bruno F. Santos, Alexei Sharpenskik, and others. We are article.tv, links in the description below.