伦敦国王十字火车站去希斯罗机场四号航站楼怎

King's Cross车站可以直接乘坐Picadelly line到希思罗机场，如果去四号航站楼要上能去四号的车。火车站转地铁挺方便的，应该是不用出站直接地下转到地铁

very easy, you can use the Picardily line to LHR directly from KGX
However you may consider whether you can handle all your luggages. If not, then a taxi would be better.

直接乘坐Picadelly line到希思罗机场1,2,3 & 4

TfL网站查询http://www.usihai.com/thread-1323526-1.html

http://www.heathrow.com/transport-and-directions/trains
http://www.heathrow.com/airport-guide

坐深蓝色Piccadilly线直接到

坐地铁可以直接过去。