Airalo vs Holafly: which European eSIM is actually cheaper for UK travellers

You will burn £20–£40 on roaming on a 7-day European trip if you do nothing. An eSIM cuts that to £4–£22 depending on the provider and how predictable your data use is.

Here is the entire decision in one table, then the steps to land on the right plan.

Airalo vs Holafly: what is the difference?

All prices verified 26 May direct on each provider’s Europe landing page. Holafly bills in USD; the GBP figures are converted at the day’s rate.

	Airalo	Holafly
Entry price	£4 / 1 GB / 3 days	£15.41 / unlimited / 5 days
Model	Pay for the data you predict	Unlimited, pay for the days
Countries	42	33
Top-ups	In-app, reuse the same eSIM profile	Not needed (unlimited)

What you need before you start

Three things, none of them paid:

• A phone that takes an eSIM (iPhone XS / XR onward, most Android phones from 2020)
• Wi-Fi to activate the eSIM at home before you fly
• A rough sense of how much data you actually use on your trips

Step 1: Confirm your phone takes an eSIM

Settings → Mobile → Add eSIM. If the option exists, you are eligible.

iPhone: Settings → Mobile Data → Add eSIM. Android: Settings → Network & internet → SIMs → Add eSIM (path varies by maker). If you see the option, your phone is eSIM-capable. If you do not, neither Airalo nor Holafly will work for you.

Step 2: Estimate your data appetite

Pick a daily GB number you can defend — the honest one.

Heavy data days (Instagram on, Google Maps all day, the occasional video call) burn 1–2 GB per day. A 2 GB-per-day average for a week lands at 14 GB total. Airalo’s biggest single plan is 5 GB at £15.41 — so a heavy week needs top-ups, which is where Holafly’s unlimited plan starts to compete.

Step 3: Buy Airalo if you can predict your data

Predictable use + the same Wi-Fi habits as home = Airalo wins on £-per-trip.

A three-day weekend with light data needs: Airalo’s 1 GB / 3 days at £4 is the floor. If you under-buy, the in-app top-up flow adds another £4–£8 instantly, reusing the same eSIM profile — no re-install. Airalo covers 42 countries; if your trip crosses Albania, Montenegro, or North Macedonia, Airalo’s coverage matters.

Step 4: Buy Holafly if you cannot predict your data

If you are a heavy or unpredictable user — long trips, lots of tethering, video calls — Holafly’s unlimited-per-day model removes the top-up maths. You pay for the days, not the gigabytes.

How much will this save you?

Doing nothing on a 7-day trip: £20–£40 in roaming. An eSIM: £4 (light Airalo) to ~£22 (unlimited Holafly). The break-even sits around a steady 2 GB/day for a week — below that, Airalo wins; above it, Holafly.

When does this not work?

• Phones with no eSIM slot (see Step 1)
• Trips outside the provider’s covered countries
• Data needs so low that a home-network EU roaming add-on is cheaper — check yours first

Prices verified 26 May 2026, 19:55 direct on each provider’s Europe page. Prices move — re-check before you buy.