Typhoon Dujuan Japan travel alert: trains, flights and ferries

Typhoon No. 25, internationally named Dujuan, is approaching the Izu Islands and the Pacific side of eastern Japan. Transport changes have already begun. JR East has confirmed suspensions in Chiba for September 21, ANA has cancelled all Hachijojima flights on September 20, and Tokai Kisen has cancelled several island ferry services through September 21.

Not every Tokyo train or flight is cancelled. Some reports describe a risk, not a final operator decision. Check the company responsible for each part of your trip before leaving, and check again immediately before departure.

Original editorial image created for this guide. It does not depict a specific station, operator, passenger or event from Typhoon Dujuan.

The immediate decision: if you need a rural Chiba train, a Hachijojima flight or an Izu Island ferry on September 20 or 21, assume the published change applies and contact the operator now. For other routes, do not cancel from a weather headline alone. Check the live service attached to your train, flight or sailing.

Typhoon Dujuan travel status at a glance

This table was checked at 00:52 JST on September 20. Conditions and operator decisions can change quickly.

The Japan Meteorological Agency typhoon map is the primary weather source. Transport decisions belong to the relevant operator, even when the weather map looks better or worse than an earlier forecast.

What the current weather notice says

FNN's report of the JMA general weather notice said Typhoon No. 25 had central pressure of 975 hPa at 15:00 JST on September 19, with maximum sustained wind of 30 m/s and maximum gusts of 45 m/s. It was forecast to approach the Izu Islands and the Pacific side of eastern Japan from September 21 into September 22.

The same notice forecast up to 300 mm of rain in Kanto, Tokai and the Izu Islands during the 24 hours ending at 18:00 on September 21. It also warned of severe wind, high waves, flooding, landslides and swollen rivers.

These are forecasts, not totals already measured. The track, timing and impact can change. Use the latest JMA warning for the municipality where you are staying, not a screenshot saved the previous day.

If a local authority issues an evacuation instruction, follow it. A travel article cannot determine whether a particular building, road or neighborhood is safe.

JR East train cancellations and possible Chiba disruption

JR East has confirmed a limited set of September 21 changes. Reporting based on the operator's notice lists:

• all-day suspension on the Kururi Line between Kisarazu and Kazusa-Kameyama;
• all-day suspension of the Shinjuku Sazanami limited express;
• all-day suspension of the Wakashio limited express; and
• all-day suspension of the Shinjuku Wakashio limited express.

JR East also warned that sections of the Uchibo, Sotobo and Sobu Main lines and other Chiba-area routes may stop from the evening of September 21 through the last train. Some first services on September 22 could also be affected. Check the JR East Kanto service page for the current line status.

The words may stop matter. Do not describe every Chiba train as cancelled before the operator does. Equally, do not build a tight airport connection around a train carrying an advance disruption warning.

If your route crosses Chiba

Travelers using Tokyo Station, Chiba, Kisarazu, Tateyama, Kamogawa, Narita or the Boso Peninsula should inspect each rail segment separately. A route can look available in a map app while one rural section is suspended.

If the trip is optional, moving it away from the highest-risk period may be simpler than building a chain of replacement buses and taxis. If it is essential, save the station names in Japanese, identify a staffed station and allow for the road network to be affected by the same weather.

For a flight from Narita, the operating airline should decide whether the flight remains worth pursuing. If the flight is operating but the usual airport train is not, compare another rail operator, an airport bus or an earlier airport transfer. Check those services directly because heavy rain can affect roads as well as tracks.

Haneda, Narita, Hachijojima and Shizuoka flights

ANA's weather notice does two different things: it identifies flights eligible for flexible handling and separately confirms some cancellations.

As of the September 19 update, ANA allowed fee-free changes and refunds regardless of the current operating display for these windows:

• Narita and Haneda: September 20 at 12:00 through the final flight on September 21;
• Hachijojima: the first flight on September 20 through the final flight on September 21; and
• Shizuoka: all flights on September 21.

ANA also said all Hachijojima flights on September 20 were cancelled. Use the ANA domestic status page for the flight and the weather ticket-handling page for the applicable change conditions.

A waiver is not the same as a cancellation. If a Haneda or Narita flight still shows as scheduled, decide whether to travel based on the airline's live record, the airport route and your tolerance for delay. Do not assume the airline will refund a self-cancelled ticket outside its published conditions.

International connections

Check the operating airline rather than only the company that sold the ticket. For a codeshare, the operating carrier controls the aircraft and usually publishes the live status.

If all flights are on one reservation, contact the airline when a disruption breaks the connection. If you hold separate tickets, the second airline may not protect a missed flight. Contact both carriers before their check-in cutoffs and review travel insurance terms.

Keep medication, documents, a charger and one change of essentials in cabin baggage within the airline's rules. Weather disruption can separate a passenger from checked baggage even when the flight eventually operates.

Izu Island ferry cancellations

Tokai Kisen's current schedule shows substantial disruption. Its September 19 update listed:

• Tokyo-departing large ships on September 19 and 20 as cancelled;
• jetfoil services on September 20 and 21 as cancelled; and
• island-departing large ships on September 20 and 21 as cancelled.

Open the Tokai Kisen schedule and match the exact island, vessel and date. The company also published a disruption notice and separate change and refund guidance.

Do not travel to Takeshiba or an island port expecting a standby sailing after a published cancellation. Contact accommodation and onward transport as soon as the ferry change is confirmed. An island booking can involve a hotel, rental vehicle and return flight, each with separate conditions.

For tickets affected by a cancelled service, follow the operator's cancellation procedure. Save the cancellation notice, booking confirmation and any operator message before the page changes.

Could Shinkansen services be affected?

Weathernews has warned that the storm could affect Shinkansen services and roads in eastern Japan. That is a forecast of possible disruption, not a blanket cancellation announcement.

Check the operator responsible for the actual route. A Tokyo to Kyoto journey, a Tokyo to Sendai journey and a local connection in Chiba do not share one status page. Do not rely on a social post that says only "the Shinkansen is stopped" without a line, station pair and time.

If an operator suspends the booked train, use its official change or refund channel. Keep the ticket, booking record and a screenshot of the service notice if you need evidence for an insurer or another supplier. For a digital ticket, save the reservation number somewhere other than the app.

Should you leave Tokyo, Chiba or an island early?

There is no single answer for the whole region. Use the most restrictive part of the itinerary.

Consider moving earlier when

• your only island ferry or Hachijojima flight is already cancelled;
• the only rail link serving your accommodation has a confirmed suspension;
• a separate-ticket flight would be lost if the airport transfer fails;
• the accommodation or local authority advises visitors to move; or
• you need medical, mobility or child-care support that becomes harder during a long interruption.

Waiting may be reasonable when

• the service still operates and the operator has not advised early travel;
• moving earlier would put you into the peak weather window;
• the accommodation is secure and local guidance favors staying indoors; and
• the booking can be changed after the operator makes a final decision.

Do not leave solely to outrun a forecast track. Moving during heavy rain and high wind can create a worse problem than remaining in suitable accommodation. Use current local instructions.

Tokyo Game Show and Silver Week trips

Visitors attending Tokyo Game Show in Chiba should keep the event plan separate from the transport status. The Tokyo Game Show 2026 guide owns the venue, ticket and event-specific travel details. Recheck the event organizer as well as JR East before setting out.

For the wider holiday period, the Japan Silver Week 2026 travel guide covers reservation pressure and general transport planning. Typhoon disruption can make already-busy alternatives fill faster, but this article does not claim that every holiday service is affected.

If a hotel, event or tour remains open while transport is cancelled, contact the supplier with the operator notice. Ask what it can change before buying a replacement at your own expense.

What to save before service deteriorates

Create one offline folder with:

• passport and insurance details;
• every train, flight and ferry booking number;
• operator cancellation or waiver screenshots;
• accommodation address in Japanese and English;
• one route to a staffed station or airport counter;
• the local emergency alert and weather pages;
• prescription details and essential contacts; and
• receipts for reasonable replacement costs.

The offline maps guide explains how to prepare navigation before a connection slows. The mobile boarding pass offline study covers why a screenshot should complement, not replace, the airline's current record.

Japan's emergency numbers are 110 for police and 119 for fire or ambulance. The Japan National Tourism Organization provides a visitor emergency page and the Safety Tips app for weather and disaster alerts. Follow local authority instructions when they differ from a general travel plan.

Mobile data during Typhoon Dujuan

Mobile data helps with operator alerts, maps, rebooking and messages to accommodation. It cannot keep a railway, airport or ferry operating, and no mobile plan guarantees reception during congestion, a power interruption or infrastructure damage.

The public Roaming eSIM catalog returned 43 Japan packages when checked at 00:52 JST on September 20. A Japan Roaming eSIM can provide a separate travel-data line on a compatible, unlocked phone. Package allowances, validity, activation rules, networks and top-up eligibility vary, so check the selected package rather than relying on a catalog-wide assumption.

Roaming eSIM is more useful than depending only on hotel or station Wi-Fi when the traveler must move between accommodation, a staffed station and an airport. It is not better than an official operator notice or emergency alert. Use the data connection to reach those primary sources, then save the critical information offline.

Install while reliable internet is available and keep the home line active if it is needed for bank or airline verification messages. The Japan eSIM guide covers the broader country choice. Check whether the phone supports eSIM and follow the pre-travel installation guide before changing settings.

Typhoon Dujuan Japan travel questions

Should I cancel my Tokyo trip because of Typhoon Dujuan?

Do not cancel from a general headline alone. Check the airline, railway and accommodation attached to your trip. Change the plan promptly when an essential segment is cancelled or local authorities advise against travel.

Are all Tokyo trains cancelled on September 21?

No. JR East has confirmed specific Chiba-area and limited-express suspensions and warned that more services may stop. Use the live line status for the exact route.

Will Haneda and Narita flights operate?

Some flights may operate while others are delayed or cancelled. ANA has published flexible handling for specified travel windows, but a waiver does not mean every flight is cancelled. Check the operating carrier.

What if my flight operates but the train to the airport is cancelled?

Look for another operator, an airport bus or an earlier transfer, and verify that option directly. Contact the airline if reaching the airport becomes impossible, but do not assume a ground-transport failure automatically changes the flight ticket.

Are Hachijojima flights cancelled?

ANA said all Hachijojima flights on September 20 were cancelled. Check the airline for September 21 and later because the status can change.

Are Izu Island ferries cancelled?

Tokai Kisen listed jetfoils on September 20 and 21 and several large-ship departures through September 21 as cancelled. Match the current schedule to the exact island and vessel.

Can I change a JR ticket after a typhoon cancellation?

Use the rail operator's current disruption and refund instructions. Conditions depend on the ticket and service. Keep the booking record and service notice if another supplier or insurer asks for proof.

Should I leave Chiba earlier?

Consider earlier travel when the only needed line has a confirmed suspension or a separate flight connection is at risk. Do not move into severe weather solely to get ahead of a forecast. Follow local instructions.

What proof should I keep for travel insurance?

Save the booking, operator cancellation or delay notice, rebooking correspondence and itemized receipts. Ask the insurer what evidence and cost limits apply before making an expensive replacement booking when possible.

How long will disruption last after the typhoon passes?

There is no reliable region-wide restoration time. Operators may need to inspect tracks, aircraft, ports and roads after wind and rain ease. Check the next service, not only the weather radar.

Check each Typhoon Dujuan route before leaving

Open the exact operator page for every segment, then check JMA and the local authority. Treat confirmed cancellations as final unless the operator publishes a replacement. Treat forecasts as reasons to prepare, not as proof that a service has stopped.

Charge the phone, save the booking and status pages offline, and avoid tight separate-ticket connections. The useful plan is the one that still works if the next train, flight or ferry does not.