Narita Airport and Haneda Airport are the largest and busiest airports in Japan, but each has its own characteristics.

1. Haneda Airport has the advantage of convenient transportation and close to the core area of Tokyo. It doesn't take long for either rail transit or taxis to get to and from the airport. In addition, Haneda Airport mainly undertakes domestic flights in Japan, especially JAL and ANA flights.

2. Narita Airport is more suitable for long-distance and international travel, because the facilities and services are relatively complete and the international route network covers a wide range. However, it is worth noting that although Narita Airport has a wide international network coverage, its flight density is lower than Haneda Airport.