Note that for the Shinkansen, you need a “super (limited) express” ticket in addition to the basic fare ticket for that route (we sell these as a set). Do Shinkansen tickets sell out? Yes, especially for weekend travel and during peak seasons, Shinkansen services can be fully booked.

Yes, Shinkansen (bullet train) seats can and do sell out, particularly during Japan's three major holiday periods: Golden Week (late April/early May), Obon (mid-August), and the New Year period. During these times, reserved seats on popular lines like the Tokaido Shinkansen (Tokyo to Osaka) are often booked weeks in advance. However, on a "normal" travel day, you can almost always find a seat if you book at least a few hours or a day ahead. Even if the reserved cars are full, most Shinkansen trains feature "Non-Reserved" (Jiyu-seki) cars where seating is first-come, first-served; if the train is packed, you may have to stand in the aisle for a portion of the journey. In 2026, the "Nozomi" and "Hayabusa" trains are the most popular and sell out fastest. A "pro-tip" for travelers is to use the Smart EX app to book seats in advance, especially if you have large luggage, as seats with "oversized baggage areas" are limited and must be reserved separately to avoid a fine.