Best eSIM for Czech Republic 2026: 5 Providers Priced
Czech Republic eSIM prices checked 27 Oct 2026: ONE eSIM is cheapest at 4 of 5 sizes from 1 to 20 GB, from $1.57 for 1 GB.
Short answer: ONE eSIM has the cheapest 1 GB eSIM for Czech Republic at $1.57 for 7 days; the next cheapest is Saily at $1.99. Prices checked 27 October 2026 across ONE eSIM, Airalo, Holafly, Saily and Nomad; the full table is below.
Prague's old-town lanes, castle hill and beer halls draw short city-break crowds, while others use the capital as a base for day trips by train to Kutná Hora, Český Krumlov or across the border into Austria and Germany. Either way, a phone that holds a map, a translation app and a live train timetable matters more than hunting down a kiosk SIM on arrival day. We checked eSIM prices on 27 October 2026 for ONE eSIM, Airalo, Holafly, Saily and Nomad, lining up each provider's plans by data size and validity so you can see at a glance which Czech Republic eSIM suits a quick weekend in Prague versus a longer loop around the country.
Quick answer: Czech Republic eSIM prices by size
- 1 GB: ONE eSIM at $1.57 (7 days); next cheapest is Saily at $1.99 (7 days).
- 3 GB: ONE eSIM at $4.13 (15 days); next cheapest is Airalo at $4.50 (3 days).
- 5 GB: ONE eSIM at $6.55 (30 days); next cheapest is Airalo at $7.00 (7 days).
- 10 GB: ONE eSIM at $11.77 (30 days); next cheapest is Airalo at $14.00 (7 days).
- 20 GB: Nomad is cheapest at $20.00 (30 days); ONE eSIM is $26.02 (30 days).
Czech Republic eSIM prices compared (1 GB to 20 GB)
| Data | ONE eSIM Our price | Airalo | Holafly | Saily | Nomad |
|---|---|---|---|---|---|
| 1 GB | $1.57 (7 days) Cheapest, saves $0.42 | $4.00 (3 days) | – | $1.99 (7 days) | $4.50 (7 days) |
| 3 GB | $4.13 (15 days) Cheapest, saves $0.37 | $4.50 (3 days) | – | $4.99 (30 days) | $9.00 (30 days) |
| 5 GB | $6.55 (30 days) Cheapest, saves $0.45 | $7.00 (7 days) | – | $7.99 (30 days) | $12.50 (30 days) |
| 10 GB | $11.77 (30 days) Cheapest, saves $2.23 | $14.00 (7 days) | – | $14.99 (30 days) | $16.00 (30 days) |
| 20 GB | $26.02 (30 days) | $23.00 (15 days) | – | $23.99 (30 days) | $20.00 (30 days) Cheapest |
Holafly sells only unlimited plans for the Czech Republic, so it has no price in the GB rows; its 7-day plan is in the week table below.
A week of unlimited data in the Czech Republic
| Provider | 7 days | What you get |
|---|---|---|
| ONE eSIM | $10.43 | 1 GB a day at full speed, then 512 Kbps until the next day (7 × $1.49) |
| Airalo | $26.50 | 3 GB a day at full speed, then 1 Mbps (fair use) |
| Holafly | $27.50 | No daily cap; fair use may slow very heavy use |
| Saily | $26.99 | 5 GB a day at full speed, then up to 1 Mbps |
| Nomad | $25.00 | 2 GB a day at full speed, then 1 Mbps |
For a week, ONE eSIM's 1 GB a day plan is the cheapest way to stay online all day at $10.43. The cheapest of the others is Nomad at $25.00, which gives more full-speed data a day; compare by how much you use a day, not by the word unlimited.
Which networks power a Czech Republic eSIM
ONE eSIM connects Czech Republic travellers to O2 and Vodafone, both carrying 5G alongside 3G and 4G, so speed mostly comes down to what your handset supports rather than which of the two networks you land on. That pairing covers Prague densely and extends well along the rail corridors to Brno, Plzeň and the Austrian and German borders, with the usual dip in signal once you head into smaller villages or deep countryside. Because the eSIM rides on the same physical masts a Czech-bought SIM would use, there is nothing to configure beyond activating the profile; you are not trading away coverage for convenience.
Which eSIM should you choose for the Czech Republic?
- Short trip, light use (up to 3 GB): ONE eSIM's 3 GB plan at $4.13 (15 days), the cheapest at that size.
- Two weeks or more (5 to 10 GB): ONE eSIM's 10 GB plan at $11.77 (30 days), the cheapest at that size.
- Heavy use (20 GB): Nomad at $20.00 (30 days) is the cheapest at 20 GB.
- Streaming or video calls every day: compare the unlimited plans above by how much full-speed data each gives a day.
How to set up your Czech Republic eSIM
- Confirm your handset is eSIM-capable and unlocked before you book a plan.
- Install the eSIM profile over airport or home Wi-Fi ahead of departure, since the QR code download needs an internet connection but not mobile data.
- Land, switch on the eSIM line and data roaming, and check for an O2 or Vodafone signal before you leave Václav Havel Airport or your arrival station.
Czech Republic eSIM FAQ
- Will an eSIM work for a Prague city break and a day trip to Kutná Hora or Český Krumlov? Yes, coverage follows O2 and Vodafone's national networks, not just the capital, so a day trip out of Prague stays connected.
- Can I keep my home number active with a Czech Republic eSIM? Yes, most phones support dual SIM, so your home number stays on standby for calls and texts while the eSIM handles data.
- What happens if I use all my data in Czech Republic? Fixed-GB plans usually stop or throttle hard; ONE eSIM's daily plans instead drop to 500 Kbps for the rest of that day rather than cutting off, as shown above.
- Is 5G available on a Czech Republic eSIM? Yes, both of ONE eSIM's network partners, O2 and Vodafone, carry 5G alongside 3G and 4G, so speed depends mainly on your device.
- Is a Czech Republic eSIM available for a full month? Yes, the 5 GB and 10 GB plans both run for a full 30 days, at $6.55 and $11.77.
How we check prices
We read each provider's public Czech Republic page on 27 October 2026 and took its cheapest plan at or above each size, in US dollars before any coupon, with the validity in brackets; ONE eSIM prices are our live list prices on the same day. Prices move, so we re-check every month and keep the date on the page and in the short answer. If a number is out of date, write to support@oneesim.app and we will correct it.
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