Delta Air Lines today filed applications with the European Commission and the U.S. Department of Transportation requesting permission to operate twice-daily year-round service between London’s Heathrow Airport and Boston, and daily year-round service between Heathrow and Miami.
The oneworld alliance, which includes American Airlines and British Airways, holds 47 percent of Heathrow’s takeoff and landing slots, while the Star Alliance, which includes United Airlines, US Airways, BMI and Lufthansa, accounts for 25 percent of Heathrow’s slots. 
SkyTeam, whose members include Delta, Air France-KLM and Alitalia, holds only 5 percent of Heathrow’s slots.
Sounds to me like Delta is growing up from the sandbox and don’t know should they keep their Pampers on or off. Would be interesting to compare how much slots they have for example in Chigago, and BA is not sueing them from those slots.
