Transportation from the Narita Airport to Tsukuba
Tsukuba (or "Tsukuba Science City") is located about 60 km north of Tokyo and about 40 km northwest of the Narita International Airport. The Tsukuba Center bus terminal, Okura Frontier Hotel Tsukuba and Okura Frontier Hotel Tsukuba Epochal are all in the central area of Tsukuba, and are about 10 km south of KEK.

How to reach Tsukuba is explained in the KEK web page. The easiest way is to take a direct bus service, called the Airport Liner "NATT'S", from the Narita Airport through Tsukuba Center to Tsuchiura Station. Tickets are available at the "Airport Limousine Keisei" counter on the 1st floor in the arrival lobby. (Remind that the "Airport Limousine Bus" counter on the same floor, by another company, does not take care of the NATT'S bus service.) The fare is 2,540 yen per person. The bus leaves the Airport every ~ 90 minutes (see the time schedule), and it takes about one hour and 40 minutes to Tsukuba Center. (Since the bus does not go through Japanese Expressways and is hardly caught in a traffic jam, the schedule would be reliable.) The last bus leaves the Airport at 20:00. There are four bus stops: "Shin-Tone-Machi" (which is skipped occasionally), "Hitachino-Ushiku Station", "Tsukuba Center" and "Tsuchiura Station"; you should ride off the bus at Tsukuba Center (not Tsuchiura Station).

The easiest way to move to the Narita Airport from Tsukuba is again to take the direct bus service. The ticket going to the airport, however, needed to be reserved and purchased at least one day in advance.