Airalo

For a European trip that touches several countries, Airalo's regional Europe eSIM covers a wide swath of the continent under one profile, avoiding the country-hopping problem of country-specific plans running out or needing replacement at each border. Unlike Holafly's flat-rate approach, Airalo sticks to its usual fixed-GB, fixed-validity structure here too, so you pick a data size upfront rather than paying one price regardless of usage.

That structure rewards travelers who can estimate their needs reasonably well: a lighter user on a two-week, four-country trip can buy a smaller, cheaper bundle than they'd pay for an unlimited competitor, while someone planning to stream video and use maps heavily may find a fixed-GB plan runs out faster than expected. Airalo also sells single-country eSIMs for travelers visiting just one European destination, often cheaper per gigabyte than the regional bundle if you're staying put. Everything is data-only, with the standard 30-day technical-failure refund window. It's a good fit for budget-conscious, moderate-data travelers touring Europe who don't want to pay for unlimited data they won't use.