Looking for the best eSIM for Japan in 2026? After testing eSIMs on my recent trip to Tokyo, Kyoto and Osaka, my top recommendation for most travelers is still Airalo.

The reason is simple: Airalo offers almost 20 different Japan eSIM plans, competitive prices, 5G access and operates on both the KDDI and SoftBank networks. That makes it one of the most reliable and flexible eSIMs for traveling in Japan.

However, if you are a heavy data user, content creator, remote worker or you simply do not want to worry about running out of data, then the Sim Local AU eSIM for Japan is the best unlimited data eSIM for Japan.