How to call the Czech Republic from the UK

From mobile
+420 xxx xxx xxx
From landline
00 420 xxx xxx xxx

From $0.07/min in your browser, no plan needed

How to dial the Czech Republic from the UK

How to make a call to the Czech Republic from the UK: dial the exit code, the country code, and the number. Dial 420 straight after 00, because Czech numbers have no leading 0 to drop.

  1. 00The UK exit code
  2. 420Country code of the Czech Republic
  3. xxx xxx xxxThe number, area code first
  • From a mobile: +420 xxx xxx xxx

Paste or type a number here to see how to dial it from anywhere

+420

Example: +420 212 345 678

Mobile
+420 212 345 678
Landline
00 420 212 345 678

Main area codes in the Czech Republic

The area code comes right after 420, then the local number

  • Prague00 4202then 8 digits
  • Central Bohemian Region00 4203100 42032then 7 digits
  • Karlovy Vary Region00 42035then 7 digits
  • Plzeň Region00 42037then 7 digits
  • South Bohemian Region00 4203800 42039then 7 digits
  • Ústí nad Labem Region00 4204100 42047then 7 digits
  • Pardubice Region00 42046then 7 digits
  • Liberec Region00 42048then 7 digits

Before you call the Czech Republic

Dial Prague with the code 2

Prague numbers take 8 digits after the code, so a Prague line is a 9-digit number after 420.

What you dial
  1. 00exit
  2. 420Czech Republic
  3. 2Prague
  4. xx xx xx xxlocal number

Dial a region by its code

Every region outside Prague takes 7 digits after its code.

  • Plzeň00 420 37
  • Liberec00 420 48
  • Hradec Králové00 420 49

Calling the Czech Republic cell phones

Dial the number as for a landline. From a UK mobile, +420 replaces 00 420.

Calling the Czech Republic from the UK without an international plan

Suparelay calls the Czech Republic for $0.07/min from your browser, with no plan. Without one, carriers in the UK charge up to $0.33/min

CarrierPer minute
SuparelayNo plan neededUp to 4× cheaper
$0.07 landline$0.27 mobile
EELower rate with Calling Abroad from the UK add-onee.co.uk · 2026
$0.33$0.066 landline · $0.079 mobile with plan
O2500 min included with £30 Rolling plano2.co.uk · 2026
$0.30
Vodafone500 min included with International Saver 500vodafone.co.uk · 2026
$0.32

Want to call the Czech Republic?

Type the number and call from your browser, with no app and no plan

+420

Type it with or without the country code

From$0.07/min
  • Per started minute
  • Suparelay caller ID

When to call the Czech Republic

The time now in the Czech Republic, and the best hours to call. The time difference stays at 1 hour, so daylight saving time does not change it.

Time difference
All year: 1 hour ahead of London
Daylight saving time
Clocks change twice a year
Holidays in the Czech Republic

Why a call to the Czech Republic fails

O2 blocks international calls on a £0 Spend Cap

A £0 Spend Cap on O2 bars chargeable use outside the monthly and Bolt On allowances. International calls are in that group, so the call fails.

O2, What are spend caps?

From any country, a call to the Czech Republic also fails when

  • The exit code is wrong for your country
  • The number does not take calls from abroad
How to fix each one

Questions

How to call the Czech Republic from the UK on a cell phone or mobile?

Dial +420, then the number. It works from any mobile in the UK

Are calls to the Czech Republic included in UK phone plans?

On some plans. O2 includes calls to the Czech Republic in its plans. EE and Vodafone charge less with an add-on or another plan. Without one of these plans, you pay the carrier's rate per minute

How much does it cost to call the Czech Republic from the UK?

With no plan, carriers in the UK charge up to $0.33 a minute. Suparelay charges each started minute, from your browser

How to call Prague from the UK?

For Prague, dial 00 420 2, then the 8-digit local number

Do I need to dial 00 to call the Czech Republic?

From a landline, yes: dial 00, then 420. From a mobile, type + instead, and the phone adds the exit code

How do I dial a +420 number?

Press and hold 0 until + appears, then dial 420 and the number

Can I call the Czech Republic on my iPhone?

Yes. In the Phone app, press and hold 0 for +, then dial 420 and the number. Your plan must allow calls to the Czech Republic

Why isn't my call going through to the Czech Republic?

The usual causes: the exit code is wrong for your country and the number does not take calls from abroad. Each one is listed above, with a link to its fix

How to call the Czech Republic from the UK for free?

An app calls for free only when both sides have it. A call to a landline, or to a phone without the app, costs money

How to call the Czech Republic from the UK on WhatsApp?

WhatsApp and FaceTime call for free, but only someone with the same app. To ring a landline or a phone in the Czech Republic without the app, use your phone plan, a calling service, or Suparelay

How to call the Czech Republic landline from the UK?

From a landline in the UK, dial 00 420, then the number

When is the best time to call the Czech Republic?

Call between 8:00 and 22:00 in the Czech Republic. All year: 1 hour ahead of London

How do I call the Czech Republic from the UK with an international call?

Dial 00 420, then the number. From a mobile, +420 works too

Somebody in the Czech Republic is waiting for your call from the UK.

Call the Czech Republic