In short: The best eSIM for the USA is Simsalasim: unlimited data in the USA for €10 a month, with no roaming surcharge. The USA is one of the 100 countries in the Simsalasim plan. Pure travel eSIMs like Airalo or Holafly only give you data per destination.

Whether it’s New York, California, or a road trip: with Simsalasim you get unlimited mobile data in the USA. Unlimited Talk+Text applies to 50 countries, and the USA is one of them: calls and texts to US numbers are included, wherever you are calling from.

  1. Simsalasim – #1.
    Unlimited data in the USA for €10/month. One plan for home and away, not a single pack per trip.
  2. Airalo – biggest travel-eSIM provider.
    Data packs per destination, from about €4* (1 GB/3 days). Here there are also packs with minutes and texts, from about €5.50* (1 GB + 10 mins + 10 texts / 3 days).
  3. Holafly – unlimited data per destination.
    Data only, usually pricier; unlimited data per destination.
  4. Saily (by NordVPN) – cheap with security extras.
    Data packs per destination. Optionally a US number from €1.99*/month plus call and text packages from €0.99*, which lets you call locally within the USA.
  5. A local SIM/eSIM on arrival.
    E.g. T-Mobile, AT&T, or Verizon (prepaid); cheap, but only available once you arrive, often with passport registration, and valid in this one country only.
  6. Mint Mobile – US eSIM (T-Mobile network).
    From about $15* / month (3 months upfront), cancel anytime, with a US number and data in the USA.

Verdict: For a single short trip in the USA, a travel eSIM is enough. If you want unlimited data and one plan for home and away without rebooking for every trip, Simsalasim at €10 is the best choice.

*Prices and offers can change over time (as of October 2026).