September is the beginning of the off-peak travel season, when airplane tickets become cheaper and popular tourist spots see fewer visitors. While many travelers focus on saving money on flights and accommodation, mobile connectivity while abroad is often overlooked. For those traveling outside the European Union, data roaming can be extremely expensive, with costs rising sharply once you leave the coverage area of your domestic plan. To help travelers avoid these high fees, Saily—a service provided by Nord Security, the parent company of NordVPN—offers eSIM packages that can be purchased in advance and automatically activated when you arrive at your destination, without the need to switch SIM cards. Saily’s eSIM service allows users to select data packages tailored to their travel needs, and by using the promo code "CLUBIC" during checkout, travelers can enjoy a 10 percent discount on all packages, including local, regional, global, and Ultra options. This discount applies to all destinations and is valid even for packages already on sale. For example, the Saily eSIM Europe 10 Go package normally costs 31.06 euros, but with the code, it drops to 27.95 euros. Prices start at around 3.10 euros for data in countries like Spain or Italy, and 3.44 euros for the United States, before the discount is applied. Using Saily is a simple three-step process: choose a destination and data volume, install the eSIM profile via the app, and the package automatically activates when you arrive in the country or up to 30 days after purchase. Whether you're planning a week-long trip to Rome or Lisbon, or a longer road trip in the U.S., Saily offers packages designed to meet different needs. Each eSIM also includes features like an ad blocker, protection against malicious websites, and access to over 115 virtual locations, all inherited from NordVPN. Saily has received a high rating of 9.5/10 and is ranked as the top international eSIM service for September 2026. While Saily has several strengths—such as the 10 percent discount with no minimum purchase, automatic activation, integrated security, and 24/7 support—it also has some limitations. It does not include voice calls or SMS, and users may need a separate solution for verification codes. Additionally, Saily doesn’t disclose the local operators used in each country, which could be important for travelers visiting rural areas with poor coverage. The eSIM also requires a compatible, unlocked smartphone, which may not be available on older models. For those traveling outside Europe this autumn, however, the Saily eSIM with the CLUBIC code offers a transparent and cost-effective alternative to expensive roaming charges.