1. Free shuttle bus: Narita Airport has free shuttle buses between t 1, t2 and t3 terminals. The t 1 terminal is far away from the t2 and t3 terminals, so it takes about 10 minutes for the bus to run once. T2 is connected with t3, which takes about 15 minutes to walk and about 3 minutes to take the bus each time.

2. Walking: You can walk from t3 to t 1 through the communication channel in the airport, which takes about 15 minutes.