Determining the best airline to fly economy class to Europe is subjective as it can depend on individual preferences and priorities. However, some airlines are consistently recognized for their quality of service and amenities in economy class when flying to Europe. For example, carriers like Emirates, Qatar Airways, Singapore Airlines, and Turkish Airlines have been highly regarded for their spacious seating arrangements, entertainment options, inflight meals and beverages, as well as attentive cabin crew. Nonetheless, it's recommended to check customer reviews and compare prices before booking a flight as experiences may vary depending on factors such as routes and aircraft configurations.