Upvote:1
If you are comfortable with trains, you can make the trip in 90-120 minutes, depending on your time of departure. This comes down to whether you check or carry-on, your facility in navigating the airport/rail station, and your tolerance for OJ Simpson-like sprints to the departure gates. Personally, I'd plan more time between flights. Here is a link for checking train schedules. http://www.hyperdia.com/ Easy to use and all in English.