Euronews.green writes that domestic flights that have a rail alternative in under two and a half hours will be banned, "except in cases of connection with hub airports that link with international routes." Spanish authorities have considered this measure since 2021 as part of the effort to reach carbon neutrality by 2050.

Additionally, experts in Spain also want to look into the potential climate benefits of restricting the use of private jets, as the European Union could soon start taxing energy products, such as kerosene.

The initial draft presented by the political leader of the Sumar party, Yolanda Díaz, proposed banning domestic flights where train-travel can happen in under four hours. According to experts at Ecologistas en Acción, this measure would have saved 300,000 tons of CO2 per year, as well as cut the number of flights by 50,000.

Members of the aviation industry believe that the emissions-saving benefits won't be that large and say that 'in the face of such reduced benefits, the damage that would be caused to the air transport industry in Spain will be considerable."

Currently, there's no word on when the measures are to be enforced or which routes will be affected, as the proposal needs to go through a few more stages of amendment before it will be approved by the Senate.