Delta Air Lines said on Tuesday it has added a $3 surcharge each way on fares purchased in the United States for flights between the United States and Europe, a move that would help offset the cost of the EU's new Emissions Trading Scheme.

Delta is the first major U.S. airline to raise the price of U.S.-to-Europe flights since the European Union's carbon law kicked in on Sunday. Europe's highest court last month backed the controversial EU law to charge airlines for carbon emissions on flights to and from Europe.