Delta has abused their presence at HND. It's a privilege, not a right. They should be grateful for whatever they get and operate the flight in accordance to the rules. What the did with SEA-HND was incredibly disrespectful to the DOT and Japanese authorities. HND is their primary airport serving local traffic in Toyko just as LaGuardia is our primary airport serving local passengers in NYC. Even if the runways at LGA were long enough and we lifted the perimeter rule we still would give priority to US airlines just as Tokyo gives priority to their airlines at HND. If Delta doesn't like the arrival and departure times then they should go back to NRT.