See plans
ConnectivityHuB / Thailand eSIM / eSIM vs roaming

eSIM vs Roaming in Thailand: Which Is Cheaper?

eSIM vs roaming in Thailand — it sounds like a small decision, but it can easily be the difference between a £20 trip cost and a £150 phone bill. Here's an honest comparison of every option.

The four options at a glance

Option Typical cost Setup
ConnectivityHuB eSIM £13.99–£34.99 one-off Instant — QR code by email
UK network roaming £5–12/day (£35–168 for 2 weeks) Automatic — uses your existing SIM
Local Thai SIM (airport) £10–20 for 15–30 days 20–30 min queue at airport counter
Pocket WiFi rental £40–70/week Pre-order, collect at airport

UK network roaming in Thailand

Thailand sits outside the EU, so the Brexit-era roaming protections that keep costs low in Europe simply do not apply. EE, O2, Vodafone and Three all charge daily add-ons for data use in Thailand.

A worked example: 14 days on EE at £5.99/day = £83.86. At the premium tier that jumps to £140 for the same trip. These charges appear on your monthly bill with no prior warning — hence the term "bill shock".

The one advantage of roaming is zero setup: your existing SIM just works. But for anything longer than a weekend, it's rarely worth the cost.

Local Thai SIM

Pros: The cheapest option overall. AIS, TrueMove H and DTAC all sell tourist SIM cards at Bangkok Suvarnabhumi, Don Mueang and Phuket airports for around £10–20, covering 15–30 days of data.

Cons: You need to physically swap out your UK SIM (which means no calls or texts on your UK number), queue for 20–30 minutes at the airport counter after a long-haul flight, and deal with the faff of keeping track of a loose SIM card.

For travellers who want the absolute cheapest data and don't mind the friction, a local SIM is a reasonable choice.

Pocket WiFi

Pros: One device can share WiFi with multiple people — useful for groups or if you're travelling with a laptop and tablet.

Cons: You're carrying an extra device that needs charging. If it runs out of battery or gets left in a tuk-tuk, you have no internet. Rarely worth it for solo travellers or couples, especially now that phones can hotspot from an eSIM.

Our verdict

For most solo UK travellers and couples, an eSIM is the best balance of price and convenience. It costs roughly the same as a local Thai SIM, requires no queuing, and lets you keep your UK number active for incoming calls.

A local Thai SIM is marginally cheaper — but not by enough to justify the airport queue and SIM swap after a 12-hour flight. Roaming should be avoided unless your specific UK tariff includes Thailand at low daily cost (check with your network before you go).

Save up to 90% vs roaming

Pick your Thailand eSIM plan. One-off price, no daily charges.

See Thailand plans

Frequently asked questions

  • Do UK networks include Thailand in their roaming plans?
    Thailand is not covered by the EU roaming rules that apply in Europe. Most UK networks (EE, O2, Vodafone, Three) charge separate daily roaming fees for Thailand, typically £5–£12 per day.
  • How much does roaming in Thailand cost with EE or Vodafone?
    EE charges around £5.99–£10 per day for data roaming in Thailand depending on your plan. Vodafone charges £8–£12/day. Over a two-week trip that's £84–£168 — versus a one-off eSIM fee of under £35.
  • Is a local Thai SIM cheaper than an eSIM?
    Marginally, yes — local SIMs from AIS or TrueMove H at the airport cost around £10–20 for 15–30 days. The trade-off is queuing 20–30 minutes at the airport counter and swapping your physical SIM.
  • Can I use an eSIM alongside my UK number?
    Yes. Because an eSIM is a separate digital profile, your UK SIM stays active. You'll receive calls and texts on your UK number while using the eSIM for mobile data.