Cheapest Unlimited Data eSIM 2026: 22 Countries Compared
Unlimited eSIM prices in 22 countries, 27 Oct 2026: ONE eSIM's daily plans vs Airalo, Holafly, Saily and Nomad, by full-speed data a day.
Short answer: For a 7-day trip, ONE eSIM has the cheapest unlimited data eSIM in 22 of the 50 countries we checked: 21 in Europe, plus China. Its 1 GB a day plans start at $10.43 a week, and at 2 GB a day it is cheaper than Nomad's 2 GB a day plan in every one of them. From 3 GB a day, Airalo or Saily is often cheaper; the country pages show each case. Prices checked 27 October 2026 across Airalo, Holafly, Saily and Nomad.
Unlimited data plans are not all the same plan. Most give you a set amount of full-speed data each day and then slow you down until the next day: Nomad 2 GB, Airalo 3 GB, Saily 3 or 5 GB, and ONE eSIM from 500 MB to 10 GB, the amount you choose. Holafly is the exception, with no daily allowance. So the fair comparison is the price for the same full-speed data a day, which is what this page and each country guide show.
Unlimited eSIM prices for 7 days in 22 countries
| Country | ONE eSIM 1 GB/day | ONE eSIM 2 GB/day | Nomad 2 GB/day | Cheapest other unlimited |
|---|---|---|---|---|
| Austria | $10.43 | $19.46 | $25.00 | $25.00 (Nomad, 2 GB a day) |
| Belgium | $11.20 | $19.46 | $25.00 | $21.00 (Airalo, 3 GB a day) |
| China | $12.53 | $23.10 | $25.00 | $25.00 (Nomad, 2 GB a day) |
| Croatia | $10.43 | $19.46 | $25.00 | $24.50 (Airalo, 3 GB a day) |
| Czech Republic | $10.43 | $19.46 | $25.00 | $25.00 (Nomad, 2 GB a day) |
| Denmark | $10.43 | $19.46 | $25.00 | $25.00 (Nomad, 2 GB a day) |
| Finland | $10.43 | $19.46 | $25.00 | $25.00 (Nomad, 2 GB a day) |
| France | $12.53 | $22.33 | $25.00 | $23.50 (Airalo, 3 GB a day) |
| Germany | $10.43 | $19.46 | $23.00 | $23.00 (Nomad, 2 GB a day) |
| Greece | $10.43 | $19.46 | $25.00 | $25.00 (Nomad, 2 GB a day) |
| Hungary | $10.43 | $19.46 | $25.00 | $25.00 (Nomad, 2 GB a day) |
| Iceland | $10.43 | $23.10 | $25.00 | $25.00 (Nomad, 2 GB a day) |
| Ireland | $10.43 | $19.46 | $25.00 | $25.00 (Nomad, 2 GB a day) |
| Italy | $10.43 | $19.46 | $25.00 | $22.99 (Saily, 5 GB a day) |
| Netherlands | $10.57 | $18.48 | $25.00 | $25.00 (Nomad, 2 GB a day) |
| Norway | $10.43 | $19.46 | $25.00 | $25.00 (Nomad, 2 GB a day) |
| Poland | $11.55 | $19.46 | $25.00 | $25.00 (Nomad, 2 GB a day) |
| Portugal | $10.43 | $19.46 | $25.00 | $25.00 (Nomad, 2 GB a day) |
| Spain | $10.43 | $18.90 | $25.00 | $22.99 (Saily, 5 GB a day) |
| Sweden | $10.43 | $19.46 | $25.00 | $25.00 (Nomad, 2 GB a day) |
| Switzerland | $10.43 | $19.46 | $25.00 | $24.99 (Saily, 5 GB a day) |
| United Kingdom | $10.43 | $19.46 | $25.00 | $25.00 (Nomad, 2 GB a day) |
Where the others are cheaper
ONE eSIM wins on the plans most travellers need, up to 2 GB a day. Above that it is not always the cheapest: at 3 GB a day, a rival's plan costs less for a week in 20 of these 22 countries (Saily in 14, Airalo in 6). Heavy users who stream video for hours every day should look at Saily's 5 GB a day plans or Holafly's plans with no daily cap. Each country guide names the cheaper plan where there is one.
What 'unlimited' means with each provider
- ONE eSIM: daily unlimited, from 500 MB to 10 GB a day at full speed depending on the country, then a slower speed shown on the plan (384 Kbps to 1 Mbps) until the next day. Choose 1 to 30 days: one purchase and one price for all the days.
- Airalo: 3 GB a day at full speed, then 1 Mbps, unless the package states a different limit.
- Saily: 3 or 5 GB a day without a speed limit depending on the country, then up to 1 Mbps.
- Nomad: 2 GB a day at 4G/5G, then 1 Mbps (512 Kbps in a few countries).
- Holafly: no daily allowance; a local operator's fair use policy may still slow very heavy use.
How much data a day do you need?
- Under 1 GB a day: maps, messaging, email, social media and a little video. Most travellers who are on hotel or café Wi-Fi in the evening fit here.
- 1 to 2 GB a day: video calls home, uploading photos and short videos, streaming music all day.
- 3 GB a day or more: streaming video for hours, working on a laptop through your phone's hotspot.
How we check prices
We read each provider's public country page on 27 October 2026 and took its unlimited plans in US dollars before any coupon or sale credit, with the full-speed data a day the provider states. ONE eSIM prices are our live list prices on the same day, multiplied by the number of days. We only list countries where ONE eSIM is cheapest both at 1 GB a day and at Nomad's 2 GB a day; we re-check every month. If a number is out of date, write to support@oneesim.app and we will correct it.