How to Call the UK from USA Cheaply in 2026

Compare US carrier rates, VoIP apps, and other methods for calling the United Kingdom. Learn UK dialing codes and the best times to reach family across the Atlantic.

UK Dialing Codes: How to Format the Number

The country code for the United Kingdom is +44 — it covers England, Scotland, Wales, and Northern Ireland alike. To call from the US:

1. Dial 011 (US exit code) or use the + symbol on your mobile phone
2. Dial 44 (UK country code)
3. Dial the UK number without the leading 0

For example, a London landline that reads 020 7946 0958 in the UK becomes +44 20 7946 0958 from the US. A UK mobile number like 07911 123456 becomes +44 7911 123456.

Key UK area codes to know: London is 020, Birmingham is 0121, Manchester is 0161, Edinburgh is 0131, and Glasgow is 0141. UK mobile numbers always start with 07.

US Carrier Rates vs VoIP for UK Calls

The UK is one of the more popular calling destinations from the US, and carrier rates reflect this — they are lower than calls to some developing countries but still far more expensive than VoIP:

• AT&T (no plan): Charges a significant per-minute rate for UK calls
• AT&T (with international add-on): Monthly fee plus a reduced per-minute rate
• Verizon (no plan): High per-minute rate
• T-Mobile: Some plans include limited UK calling, but overages are expensive
• ZephyPhone: Published per-minute rates — no monthly fees, no contracts
• Google Voice: Moderate per-minute rate

Even though UK rates are lower than many other international destinations, the savings from using VoIP instead of a carrier still add up quickly. A 30-minute weekly call could save you a significant amount over the course of a year.

Mobile vs Landline: Price Differences to Know

Calling UK mobile numbers is generally more expensive than calling UK landlines, regardless of which service you use. This is because UK mobile carriers charge a termination fee for delivering incoming international calls.

With some providers, the difference between mobile and landline rates can be substantial. ZephyPhone keeps the gap as small as possible — check our rates page for the current pricing for both UK mobile and landline numbers.

If you are calling a UK business, it may be worth asking for their landline number, as this will often be cheaper to call. However, many UK businesses have moved to VoIP-based phone systems themselves, which can sometimes be classified as mobile-rate numbers.

ZephyPhone Rates to the UK

ZephyPhone lets you call the United Kingdom from your browser. Here is what you get:

• Competitive per-minute rates — check our rates page for the latest pricing
• No monthly subscription — pay only for the minutes you use
• No connection fees — you are not charged until the call connects
• HD voice quality — crystal-clear audio on every call
• No download required — works in any modern web browser
• Credit never expires — top up once and use it whenever you need

Sign up, add credit, dial. Under two minutes, start to finish.

Best Times to Call the UK from the US

The UK is on Greenwich Mean Time (GMT) in winter and British Summer Time (BST, UTC+1) from late March to late October. Here are good calling windows:

• Morning calls: 7:00 AM Eastern (12:00 PM UK) — catch them during lunch break
• After work: 1:00 PM Eastern (6:00 PM UK) — they are just getting home
• Evening calls: 4:00 PM Eastern (9:00 PM UK) — evening wind-down time

If you are on the West Coast, add 3 hours — 4:00 AM Pacific is 12:00 PM UK, and 1:00 PM Pacific is 9:00 PM UK. Weekend mornings Pacific time work well for afternoon UK calls.

Avoid calling before 8:00 AM UK time or after 10:00 PM UK time unless you know the person keeps unusual hours. Also keep in mind that the US and UK switch to/from daylight saving time on different dates, which can temporarily shift the time difference by an hour.