请问没有英国签证，去美国可以从伦敦转飞机吗？

Thank you very much, Haruka1987. I have Resident permit for NL, and visa to US is B1/B2.  I have booked round tickets AMS-London Heathrow-Boston, waiting times would be 3h and 7h. If it is like what you said I don't have to check the embassy for this. Thanks a lot!

恩，应该没有问题的．
ｈｅａｔｈｒｏｗ机场是欧洲最大的机场，最近的ｄｕｔｙ　ｆｒｅｅ应该很吸引人！！！

Good or bad news...7 hours would make my wallet empty...