伦敦早机问题

In this case you can try to check when is the earliest Heathrow express departuring from Paddington. It takes 15 min if everything is running fine.
I heard that London is planning to run 24h underground, check more updates-- this could be helpful as well.

从市区到希思罗机场最快的方式是坐Heathrow Express，从市区的Paddington火车站出发，只要15分钟就到机场了，但票价也是最贵的。

再请问要提前多少到达机场？如果是3小时，那就是6点要到了，最晚也5：30出发了吧？

九点不早了吧。住机场附近，或者从市区早点出发啊！

9点还算早啊？ 如果怕来不及就住在机场附近就是了

http://www.heathrowairport.com/transport-and-directions/underground
https://www.heathrowexpress.com/timetable-schedule/london-heathrow