If your passport expires while you are in a foreign country in 2026, you must immediately contact the nearest embassy or consulate of your home nation. You cannot travel internationally (including returning home) on an expired passport. Most embassies provide an "Emergency Travel Document" or a "Temporary Passport," which is usually a one-way, limited-validity document that allows you to fly back to your home country. To get this, you will need to provide proof of citizenship (like a birth certificate or a digital scan of your old passport), a police report (if it was lost/stolen), new passport photos, and pay an expedited fee. In 2026, many countries have moved to digital appointment systems, so you should book an "Emergency Appointment" online as soon as you realize the expiration. Do not attempt to go to the airport; the airline will deny you boarding at the check-in desk. Once you return home, you will then need to apply for a standard 10-year replacement passport through your national passport office, as the emergency document is usually surrendered to immigration officials upon your arrival at your home border.