Eos Airlines start their two daily flights between New York JFK and London Stansted today. There is also a press release on their website saying the airline is experiencing a 62% rise in bookings for the month of September compared to the past three months.
If you go to book flights within the next few days, there are lots of flights with very few seats available. Saturdays JFK - STN has sold 47 seats with only 1 seat currently free.