As globalization proceeds, proper planning of airports has become increasingly important in Japan. This study aims to provide data for the planning process of airport terminals. To this end, we selected four representative airports in Japan and made questionnaire surveys to collect the visitors' opinions about the environment,of the terminals. Analyzing the opinions, we obtained the following results: (1) Comfort, thermal condition, design quality and the politeness of the staff at the terminals were felt fine. (2) Improvement of waiting time, mobility, variety of shops and sufficiency of furniture was demanded.