Quick verdict: which Czech Republic eSIM to buy
Prague and the wider Czech Republic have dense, fast 4G/5G coverage, and O2 and T-Mobile keep prices low even on fixed-data plans. This is one of the rare countries where a small local competitor prices a fixed 10 GB plan close to Flysimio — worth knowing before you buy.
| Trip length | Recommended plan | Approximate cost |
|---|---|---|
| Long weekend in Prague | Flysimio 3 GB / 30 days | $5.75 |
| 1–2 weeks (Prague + Český Krumlov) | Flysimio 5 GB / 30 days | $8.50 |
| 2–3 weeks, remote work or heavy use | Flysimio 10 GB / 30 days | See live price in the index above |
| Extended stay | Flysimio 20 GB / 30 days | $24.75 |
Flysimio Czech Republic eSIM
$1.43 from · instant QR · 7-day refund
Czechia eSIM price index — August 2026
Across 4 providers and 17 plans compared in August 2026, the cheapest Czechia eSIM data on a standard 3–50 GB plan works out at $1.07/GB (Flysimio, priced live). On the same measure the cheapest rival plan is Nomad at $0.90/GB — cheaper than our best equivalent plan, which costs 19% more per gigabyte.
| Provider | Plan | Price | Price per GB | Network | Best for | Price checked |
|---|---|---|---|---|---|---|
| Nomad | 50 GB / 30 days | $45.00 | $0.90/GB | O2 / Vodafone | Easy app | Aug 14, 2026 |
| Nomad | 20 GB / 30 days | $20.00 | $1.00/GB | O2 / Vodafone | Easy app | Aug 14, 2026 |
| Flysimio | 10 GB / 30 days | $10.70 | $1.07/GB | O2 / Vodafone | Live | |
| Flysimio | 20 GB / 30 days | $23.65 | $1.18/GB | O2 / Vodafone | Live | |
| Flysimio | 5 GB / 30 days | $5.95 | $1.19/GB | O2 / Vodafone | Live | |
| Flysimio | 3 GB / 15 days | $3.75 | $1.25/GB | O2 / Vodafone | Live | |
| Flysimio | 50 GB / 180 days | $71.18 | $1.42/GB | O2 / Vodafone | Live | |
| Flysimio | 1 GB / 7 days | $1.43 | $1.43/GB | O2 / Vodafone | Live | |
| Nomad | 10 GB / 30 days | $16.00 | $1.60/GB | O2 / Vodafone | Easy app | Aug 14, 2026 |
| Airalo | 10 GB / 30 days | $16.00 | $1.60/GB | O2 | Coverage & app | Aug 14, 2026 |
| Nomad | 5 GB / 30 days | $12.50 | $2.50/GB | O2 / Vodafone | Easy app | Aug 14, 2026 |
| Nomad | 1 GB / 7 days | $4.50 | $4.50/GB | O2 / Vodafone | Easy app | Aug 14, 2026 |
| Airalo | Unlimited (3 GB/day) / 7 days | $27.00 | — | O2 | Coverage & app | Aug 14, 2026 |
| Holafly | Unlimited / 7 days | $27.50 | — | Vodafone CZ / O2 CZ | Unlimited data | Aug 14, 2026 |
| Airalo | Unlimited (3 GB/day) / 30 days | $69.00 | — | O2 | Coverage & app | Aug 14, 2026 |
| Holafly | Unlimited / 30 days | $73.90 | — | Vodafone CZ / O2 CZ | Unlimited data | Aug 14, 2026 |
| Flysimio | Unlimited (2 GB/day) / 30 days | $75.90 | — | O2 / Vodafone | Live |
- Airalo · 10 GB / 30 days: The only fixed-data Czech plan Airalo lists; the rest of its Czech range is unlimited-only.
- Airalo · Unlimited (3 GB/day) / 7 days: Airalo bills this as "Unlimited": 3 GB per day at full speed, then throttled to about 1 Mbps.
- Holafly · Unlimited / 7 days: Unlimited with no daily high-speed cap; Holafly applies a fair-use policy for at most one day at a time.
- Airalo · Unlimited (3 GB/day) / 30 days: Airalo bills this as "Unlimited": 3 GB per day at full speed, then throttled to about 1 Mbps.
- Holafly · Unlimited / 30 days: Unlimited with no daily high-speed cap; Holafly applies a fair-use policy for at most one day at a time.
- Flysimio · Unlimited (2 GB/day) / 30 days: 2 GB per day at full speed, then 1 Mbps. Sold as 1–30-day passes; 30 days is priced here for comparison.
How this table is priced. Flysimio prices are read live from our carrier catalog every time this page loads, so the figure here is the figure at checkout. Competitor prices are the US-dollar price shown on each provider's own site, read on the date in the last column and linked to the page we read it from; promotional prices are marked alongside the list price. Price per GB is the plan price divided by its included data — unlimited passes have no per-GB figure and are ranked by total price instead. Full method: how we test, the eSIM Price Index and what an eSIM costs.
- Nomad — checked Aug 14, 2026 — www.nomadesim.com/czech-republic-eSIM
- Airalo — checked Aug 14, 2026 — www.airalo.com/czech-republic-esim
- Holafly — checked Aug 14, 2026 — esim.holafly.com/esim-czech-republic/
Czech Republic coverage: Prague and beyond
- Prague Metro (lines A, B, C): 4G in stations and throughout tunnels between stations — a genuine rarity among European metros.
- Český Krumlov: solid 4G across the historic centre, the castle, and the Vltava riverbank.
- Bohemian Switzerland National Park (Hřensko, Pravčická Gate): 4G at the main tourist sites; deep gorge hiking trails thin to 3G.
- Karlovy Vary spa zone: 4G throughout.
- The Prague–Brno D1 motorway: continuous 4G along the route.
Frequently asked questions
What is the best eSIM for the Czech Republic?
Flysimio and Airalo are close in price for fixed-data plans here — Flysimio's 10 GB plan is marginally cheaper unless you specifically want Airalo's bundled calls and texts, which are worth a small premium if you need a Czech number.
Does the eSIM work on the Prague Metro?
Yes. All three Prague Metro lines (A, B, C) have 4G in stations and throughout tunnels between stations — most European metros don't manage in-tunnel coverage this well.
Is there coverage in Český Krumlov?
Yes. The historic centre, the castle, and the Vltava riverbank all have solid 4G.
Does this eSIM work in Bohemian Switzerland National Park?
Yes at Hřensko village and Pravčická Gate, the largest natural arch in Central Europe. Deep gorge hiking trails thin to 3G.
What currency does the Czech Republic use?
Czech koruna (CZK / Kč) — the Czech Republic is an EU member but has not adopted the euro. Most tourist venues accept card payments.
How much data do I need for a week in Prague?
For typical use — maps, messaging, and photos — 3 GB comfortably covers a long weekend, and 5 GB covers a full week to ten days.
Sources & further reading
Maya Okafor
Senior Travel Connectivity Editor
Maya has tested eSIMs across 40+ countries over five years of full-time travel — from Tokyo subways to Patagonian backroads. She runs Flysimio’s hands-on network and speed testing.