Narita airport has lots of international flights, so you might use the airport. But Narita is a bit far from center of Tokyo. If you have hours for transit or layover, how about strolling around Narita and explore local Japan?? At Narita, there is a big Naritasan Shinshoji temple which has over 1,000 years history. In front of that temple, there is 800m long street called Omotesando. Let's walk and find Japanese local culture and food! (It's private tour, so we could change your itinerary based on your request.)