To avoid unwanted charges, your safest bet onboard your cruise ship is to switch to airplane mode, reactivate your wireless feature and log in to the ship's Wi-Fi network. (Note: Switching to airplane mode will turn off wireless until you manually reactivate it.)

To use your phone on a cruise without incurring massive roaming charges, you must put it into Airplane Mode as soon as the ship leaves port. Cruise ships use a specialized satellite network (often labeled "Cellular at Sea") that is not covered by standard land-based international plans and can cost up to $15 per megabyte of data. Once in Airplane Mode, you can manually turn your Wi-Fi back on to connect to the ship’s Wi-Fi network. Most 2026 cruise lines offer a free tier of their app that allows you to view daily schedules and chat with other passengers without a paid internet plan. For external communication, you would need to purchase a shipboard Wi-Fi package, which typically costs $15–$30 per day. Another 2026 trend is using eSIMs for port days; you can download a regional data plan (like Airalo or Holafly) that activates the moment you step off the ship, allowing you to use local 5G networks for a few dollars rather than paying the cruise line's high daily internet rates or the carrier's roaming fees.