The Last Journey North: Remembering Japan’s Cassiopeia Overnight Express

In Japan, long-distance travel has been compressed into hours.

What once required a full day can now be completed sometimes before finishing a meal, as high-speed trains carry passengers across the country with remarkable speed and efficiency.

But until recently, there was another way to travel. On certain evenings, a train would depart Tokyo for Japan’s far north. Passengers settled into private rooms, watched the city fade, and awoke the next morning in a different landscape. This was the Cassiopeia Overnight Express—a train that once turned long-distance travel into an experience itself. In our latest JRPass guide, we’ll take a look back at this special train.

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Redefining Overnight Rail Travel

When the Cassiopeia first entered service in 1999, it did so as something of a statement. Operated by East Japan Railway Company (also known simply as JR East), the train was conceived as a modern reinterpretation of overnight travel. At a time when sleeper trains were already beginning to disappear in Japan, the Cassiopeia leaned fully in the opposite direction—emphasizing comfort, privacy, and contemporary design.

Its rolling stock, known as the E26 series, was built specifically for the service. Unlike traditional sleeper trains, which often featured shared compartments or curtained berths, every room on the Cassiopeia was private. Even its most standard accommodation, the Cassiopeia Twin, offered two proper beds, a small seating area, and large windows that framed the passing landscape. Higher-tier options included deluxe rooms, as well as the coveted Cassiopeia Suite, complete with a lounge area and bathtub. In many ways, the train itself felt less like a means of transportation and more like a compact hotel.

At its rear, an elegant observation lounge (pictured above) invited passengers to gather as the train moved through the night. In the dining car, multi-course meals were served in timed seatings, recalling a tradition of rail travel that had largely disappeared elsewhere. The atmosphere was unhurried and even deliberate—a contrast to high-speed networks that were then increasingly coming to define travel in Japan.

The route reinforced that sense of occasion. Departing from Ueno Station in Tokyo, the Cassiopeia traveled north through the Tohoku region before entering the Seikan Tunnel, an undersea passage that crosses the Tsugaru Strait, linking Honshu and Hokkaido.

Completed in 1988 after decades of planning and construction, the Seikan Tunnel was an extraordinary feat of engineering in and of itself. The project gained urgency after the tragic 1954 sinking of the Toya Maru and several other vessels during a typhoon—underscoring the need for a safer, more reliable connection between Japan’s main islands. Stretching approximately 33.5 miles (53.85 kilometers), the Seikan Tunnel remains the longest undersea railway tunnel in the world, running deep beneath the seabed. Originally intended for conventional rail, it later became a critical piece of infrastructure enabling both freight traffic and, eventually, high-speed Shinkansen services.

For passengers aboard the Cassiopeia, the crossing marked the quiet transition from Honshu to Hokkaido, all without interrupting the journey.

By morning, they awoke to a different landscape entirely: open skies, cooler air, and the quiet expanse of Japan’s northernmost island. The journey concluded in Sapporo, Hokkaido, roughly 16 and a half hours after departure.

For many, the appeal lay not only in reaching their destination, but in how one arrived there. The Cassiopeia offered continuity, and that was itself part of the experience.

The Shinkansen Effect

The forces that would eventually reshape the Cassiopeia’s fate had been building for decades, however.

Since the debut of the Tokaido Shinkansen in 1964, high-speed rail has steadily transformed how Japan moves. Each expansion of the network has shortened travel times and redefined expectations. Journeys that once required a full day could increasingly be completed in a matter of hours.

Nowhere was this shift more pronounced than in the connection between Honshu and Hokkaido.

In 2016, the opening of the Hokkaido Shinkansen extended service through the Seikan Tunnel to Shin-Hakodate-Hokuto Station. Although the line did not yet reach Sapporo, it significantly reduced travel time between Tokyo and southern Hokkaido.

Plans to extend Shinkansen service northward date back decades and were closely tied to the construction of the Seikan Tunnel itself. That being said, it was only with advances in engineering and considerable investment that those plans came to fruition, allowing high-speed trains to share infrastructure originally designed for conventional rail. Today, ongoing expansion is set to extend the line to Sapporo by 2038—further reducing travel times and reinforcing the dominance of high-speed rail.

This was part of a broader phenomenon sometimes described as the “Shinkansen effect.” As high-speed rail expands, it does more than offer an alternative. It reshapes the entire travel ecosystem. Airlines adjust routes. Regional economies reorient. And slower forms of transport, such as overnight trains, begin to lose their practical advantage.

For much of the 20th century, sleeper trains had served a clear purpose: they allowed passengers to cover long distances while sleeping, maximizing both time and efficiency. But once the same journey could be completed in hours, often more conveniently, the logic of an overnight journey began to fade away. The Cassiopeia was not immune to this.

In 2016, the same year the Hokkaido Shinkansen opened, the Cassiopeia ceased its regular scheduled service between Tokyo and Sapporo. Rather than disappearing entirely, however, it entered a second phase of life. The train was reimagined as a “cruise train,” operating on limited, tour-based itineraries across eastern and northern Japan.

Even during its years of regular service, special excursion runs hinted at a different future. In October 2012, to commemorate 140 years of rail in Japan, the Cassiopeia operated a commemorative cruise route from Ueno via Niigata to Aomori, returning from Sendai over a three-day journey. The following year, in 2013, the Cassiopeia Cruise Akita ran as part of the Akita Destination Campaign, further emphasizing regional tourism and curated travel experiences.

These services laid the groundwork for what would later be branded as Cassiopeia Cruise, and later the Cassiopeia Travelogue—a shift in identity that reflected a broader repositioning. No longer simply a means of getting from Tokyo to Hokkaido, the train became the destination itself.

These journeys emphasized scenery and experience over destination, echoing the model of other luxury trains such as the Seven Stars in Kyushu. For a time, the Cassiopeia found renewed relevance—not as a practical means of travel, but as an experience.

Still, the underlying realities remained unchanged. The train’s rolling stock was aging, maintenance costs were rising, and the infrastructure it depended on was evolving. The gradual disappearance of overnight services across Japan—from the Hokutosei to the Twilight Express—suggested what was to occur next.

A Final Departure and a New Beginning

In June 2025, after years of limited operation, the Cassiopeia completed its final journey. The end was not abrupt, nor entirely unexpected. For railway enthusiasts and longtime passengers, it had been clear for some time that the train’s days were numbered. And yet, the final run carried a particular weight, as it marked the closing of a chapter in Japan’s railway history.

By the time the Cassiopeia made its last departure, it stood as one of the final representatives of a once-extensive network of overnight trains. Its disappearance marked not just the loss of a route, but the fading of a way of traveling.

At the same time, its retirement does not signal an end to overnight rail in Japan altogether.

JR East has announced plans to introduce a new overnight express train, scheduled to debut in 2027. While details remain limited, early indications suggest a continuation of the “cruise train” concept, meaning a focus on comfort, design, and experience-based travel.

In this sense, the Cassiopeia’s legacy may be less about what has been lost, and more about what is to be reimagined.

The conditions that once made sleeper trains essential in Japan have largely disappeared. But the desire for meaningful travel—which unfolds gradually, allowing space for observation and reflection—nonetheless remains.

The Cassiopeia belonged to an era when distance was something to be experienced rather than minimized. Its final departure did not simply mark the end of a train line, but the conclusion of a particular relationship with travel itself.

And yet, as new forms of overnight rail begin to emerge, that relationship may not be entirely gone—only waiting once again to depart into the night.

Travel Tips

For those inspired to continue their journey by rail, travelers can continue exploring Japan with a Japan Rail Pass, or choose a Regional Pass for shorter regional trips.

And wherever the road leads, Pocket Wi-Fi keeps essential information—from directions to weather forecasts—readily accessible.

First-time visitors may also benefit from Meet & Greet services at the airport, which can help ease the transition into a city as large and fast-paced as Tokyo.

FAQs About the Cassiopeia Overnight Express

Q: Are there any limited express sleeper trains still in regular service in Japan?

A: Yes. The last regularly scheduled overnight sleeper trains in Japan today are the Sunrise Seto and Sunrise Izumo.

Operated by the JR Group, these trains run between Tokyo and western Japan, splitting en route to serve Shikoku (Takamatsu) and the San’in region (Izumo). Unlike older sleeper trains, they feature a mix of private compartments and more economical carpeted sleeping spaces known as nobi-nobi seats.

Q: What are the details of JR East’s new overnight express train?

A: JR East plans to introduce a new overnight express train in spring 2027, marking a return to long-distance overnight travel in eastern Japan.

The train is expected to:

Operate between Tokyo and the Tohoku region, with Aomori as a likely endpoint
Follow a 12-hour journey model
Feature private compartments for solo travelers and groups of up to four people
Include fully reclining seats, suggesting a hybrid between traditional sleeper and modern comfort seating
Be finished in two tones of blue

The concept suggests overnight rail may once again have a place in the country's travel landscape. For more on this read our recent news article about Japan's New Luna Azul Overnight Sleeper Train: Tokyo to Tohoku by Night.

Q: Can you still experience something like the Cassiopeia today?

A: While the Cassiopeia itself has been retired, similar experiences still exist in Japan—though mostly in the form of luxury cruise trains.

Services such as the Seven Stars or Train Suite Shiki-shima (also operated by JR East) offer multi-day journeys with high-end accommodations, fine dining, and curated itineraries. Otherwise see our answer about for the future of sleeper trains in Japan.

Q: Was the Cassiopeia considered a luxury train?

A: Yes, though it occupied a unique space in Japan’s rail landscape.

The Cassiopeia was more luxurious than traditional sleeper trains, but was generally more accessible than today’s luxury cruise trains, which can cost significantly more and operate on multi-day itineraries.

In this sense, it served as a kind of middle ground—combining comfort and atmosphere with a functional long-distance route.

Q: How much did it cost to ride the Cassiopeia?

A: Fares varied by room type, but before regular service ended in 2016, typical prices on the Cassiopeia (per person) were: