The journey from Osaka to Iwakuni is primarily served by the Sanyo Shinkansen, specifically the Hikari and Sakura services. The Hikari Shinkansen operates at speeds up to 285 km/h (177 mph), covering the distance in approximately 1 hour and 10 minutes with fewer stops. The Sakura Shinkansen slower than the Hikari, takes around 1 hour and 25 minutes, as it makes additional stops along the route, including key stations like Himeji and Fukuyama.
Both services offer comfortable seating in Ordinary and Green Class, allowing travelers to choose between standard and premium seating options. Onboard amenities include refreshments and luggage space, enhancing your travel experience. For travelers prioritizing speed, the Hikari is the quickest choice, whereas the Sakura provides access to more regional destinations, making it ideal for sightseeing along the way.