The Czech Republic (Czechia) is easy and cheap to stay connected in. Prague has strong 4G and 5G, Český Krumlov and Kutná Hora are well covered, and trains to Vienna, Berlin and Budapest keep signal along most of the route. It is also very often one stop on a multi-country trip.
Short answer: a 5GB Czech plan covers a week in Prague. Doing Prague, Vienna and Budapest? Compare a Europe bundle.
What a Czech eSIM costs
At the time of writing (October 2026), Wanderly's Czech Republic plans start at $2.99 for 1GB, with 3GB for 30 days around $4 and 10GB for 30 days around $8. The median across data-only Czech plans is about $0.80 per GB, well under the $1.43 median across 187 countries in the Wanderly eSIM Price Index.
Do you need an eSIM with your phone plan?
EU plans roam in Czechia at domestic rates, subject to fair use. UK, US and Canadian plans usually charge for roaming — see eSIM vs international plan.
Coverage where you will actually be
Czechia's networks are O2, T-Mobile and Vodafone. Travel eSIMs connect to a partner network automatically.
- Prague (including the metro): excellent.
- Český Krumlov, Kutná Hora, Karlovy Vary: good.
- Bohemian Switzerland National Park: patchy in the sandstone gorges.
- Krkonoše mountains: good in resorts; patchier on high trails.
- Trains to Vienna, Berlin, Budapest: good along most of the route.
How much data you need
| Trip | Suggested data |
|---|---|
| Prague long weekend | 1–3 GB |
| One week | 5 GB |
| Two weeks or remote work | 10–20 GB |
See how much data you need for travel.
Czechia on a Central European trip
A Czech plan covers Czechia only. See the best eSIM for Austria, the best eSIM for Hungary, the best eSIM for Germany and the best eSIM for Europe.
Setting it up
- 1Confirm your phone supports eSIM and is unlocked on our compatibility checker.
- 2Install the eSIM over WiFi before you fly — iPhone or Android steps.
- 3In Prague, select the eSIM for mobile data and turn on data roaming for that line.
FAQ
How much does an eSIM for the Czech Republic cost? Wanderly Czech plans start at $2.99 for 1GB, with a median of about $0.80 per GB.
Does my EU plan work in Prague? Yes, under EU roaming rules, subject to fair use.
Is there coverage on the Prague metro? Yes, in stations and tunnels.
Does a Czech eSIM work in Vienna? Not unless the plan lists Austria.