Cheapest eSIM Plans for UK Travellers in 2026

What Makes an eSIM Plan "Cheap"?

The headline price of an eSIM plan doesn't tell the full story. A £5 plan with 1 GB costs you £5 per gigabyte. A £12 plan with 5 GB costs £2.40 per gigabyte — nearly half the price per GB even though it costs more upfront.

When comparing eSIM plans, look at:

• Cost per GB — The real measure of value
• Validity period — A 7-day plan is no good for a 10-day trip
• Coverage — Regional plans covering multiple countries can be cheaper than buying separate plans
• Data type — "Unlimited" plans often throttle after a few GB of high-speed data

Price Comparison: Popular Destinations

Here's how the major eSIM providers compare on price for UK travellers heading to the most popular destinations. Prices are in GBP and based on similar plan sizes (5 GB, 7–15 days).

Destination	CocoRoam	Airalo	Holafly	Nomad
Europe (regional)	From £5.50	From £7	From £19 (unlimited*)	From £8
USA	From £4.50	From £6	From £19 (unlimited*)	From £6
Japan	From £4	From £5.50	From £19 (unlimited*)	From £6
Thailand	From £3.50	From £5	From £19 (unlimited*)	From £5

*Holafly's "unlimited" plans include a daily high-speed data cap, after which speeds are reduced. Their pricing reflects their flat-rate model which costs more if you only need a few GB.

Key takeaway: CocoRoam consistently offers the lowest per-GB pricing across popular destinations. Holafly is only worth considering if you genuinely need heavy daily data usage.

Tips for Getting the Best Value

1. Right-size your data

Most travellers overestimate how much data they need. If you're on Wi-Fi at your hotel and cafes, 3–5 GB is plenty for a week-long trip. Use our data calculator to estimate your actual usage before buying.

2. Choose regional plans for multi-country trips

If you're visiting more than one country in the same region, a regional plan is almost always cheaper than buying separate country plans. A single Europe eSIM covers 30+ countries.

3. Avoid unlimited plans unless you need them

Unlimited plans from providers like Holafly cost £19+ regardless of whether you use 1 GB or 20 GB. If you need less than 10 GB, a measured plan from CocoRoam will save you money.

4. Buy before you travel

Airport SIM shops and last-minute purchases are always more expensive. Buy your eSIM from home days before departure — it takes minutes to set up and doesn't activate until you connect at your destination.

5. Check your data usage habits

Not sure how much data you typically use? Read our guide on how much data you need when travelling for a realistic breakdown by activity.

Beyond the Price Tag

Cheap doesn't have to mean low quality. When choosing a provider, also consider:

• Network quality — Does the provider use top-tier local carriers?
• Setup experience — Is installation straightforward with clear instructions?
• Support — Can you get help if something goes wrong abroad?
• Top-up options — Can you add more data if you run out?

CocoRoam partners with premium local networks in every destination and offers step-by-step setup guides. Plans can be topped up mid-trip if you need more data.

How to Find the Right Plan

1. Work out how much data you need with the data calculator
2. Browse destinations to see plans for your specific country or region
3. Compare per-GB costs, not just headline prices
4. Purchase and install before you leave — you'll have data the moment you land

The Bottom Line

The cheapest eSIM for UK travellers isn't always the one with the lowest price tag — it's the one that gives you the right amount of data at the best per-GB rate. CocoRoam offers competitive pricing across all major destinations, with no hidden fees and a clear breakdown of what you're paying for.

Compare plans for your destination and find the best value eSIM for your next trip.