Cheapest United Kingdom eSIM: live price comparison
| Provider | Plan | Lowest advertised price |
|---|---|---|
| Flylo | Unlimited data | from $1.97/day |
| Holafly | Unlimited data | from $3.90/day |
| Airalo | 1 GB - 3 days (capped) | from £3.50 |
Flylo prices are our live unlimited per-day rates — the exact figure you pay at checkout. Holafly and Airalo are their lowest advertised prices, checked automatically from their public pages (last 2026-07-13). Plans differ in data and duration; this compares each provider's cheapest entry point for United Kingdom.
Why Flylo is the cheapest unlimited eSIM for United Kingdom
- $1.97/day, unlimited data — around 49% less per day than Holafly's cheapest unlimited plan, with no per-MB charges or overage bills.
- Real United Kingdom networks — runs on Three UK, O2 UK, Vodafone UK at up to 5G, the same carriers the big providers use.
- Installs in ~60 seconds from your browser — no app to download, no SIM swap, and tethering is included on every plan.
- Transparent pricing — the comparison above is refreshed from each provider's public prices, so you can check the claim yourself.
Which United Kingdom eSIM should you pick?
If you want the lowest price for unlimited data with a no-app install, Flylo is the value pick for United Kingdom. Choose Holafly if you specifically want 24/7 live chat and don't mind paying more per day. Choose Airalo only if you use very little data and prefer a small capped plan — but on a data-heavy trip, its per-GB pricing usually ends up costing more than Flylo's flat unlimited rate.
FAQs
What is the cheapest eSIM for United Kingdom?
Among the providers we track, Flylo is the cheapest unlimited-data eSIM for United Kingdom at $1.97/day — about 49% below Holafly's lowest unlimited rate ($3.90/day). You can see the live comparison above.
Is Flylo really cheaper than Holafly and Airalo in United Kingdom?
Yes — for unlimited data. The table above pulls each provider's lowest advertised United Kingdom price automatically from their public pages, so the comparison is verifiable rather than a marketing claim. Airalo's headline prices are small capped plans, which run out faster.
How much does a United Kingdom eSIM cost with Flylo?
Flylo United Kingdom unlimited plans start at $1.97/day. Pick the trip length that fits — the price you see is the price you pay at checkout, with no roaming or per-MB charges.
Do I need an app to use a cheap United Kingdom eSIM?
No. Flylo installs straight from your browser in about 60 seconds — no app download, no SIM swap. Tethering/hotspot is included.