Best eSIM for Thailand and Southeast Asia (2026)

Thailand is a top eSIM destination, and prices there are among the lowest in Asia. Whether you are spending a week in Bangkok or island-hopping for a month, here's what the main providers publish, and when a regional plan covering several countries is the better buy.

Last checked
Reading time
10 minutes
By
The Signal Atlas research desk
On this page 7 sections
  1. Thailand at a glance
  2. Thailand: single-country plans
  3. Calls and texts
  4. Multiple countries? Consider a regional plan
  5. Practical notes
  6. FAQ
  7. Sources and method

Thailand at a glance

Checked 4 November 2026
Cheapest plan listed
$2.99Saily, 1 GB for 7 days
30 days unlimited
$49.00Airalo on dtac (Holafly: $73.90)
Regional Asia plans
Airalo Asia from $4.00; Saily Asia and Oceania from $4.99 (22 countries)
Calls and texts
Nomad says some of its Thailand plans include them

Thailand: single-country plans

Unlimited by day

Thailand, unlimited data by trip length (USD)
DaysAiralo (dtac)Holafly (True / DTAC)
3 days$9.50 (lowest listed)$11.90
5 days$15.00 (lowest listed)$20.50
7 days$21.00 (lowest listed)$27.50
10 days$31.00 (lowest listed)$36.50
15 days$39.00 (lowest listed)$50.50
30 days$49.00 (lowest listed)$73.90

Lowest listed price in the row Official pages, checked 4 November 2026.

Thailand: 30-day unlimited (USD)Drawn by Signal Atlas from prices on the providers' official pages, checked 4 November 2026 (USD).
  1. Airalo, 30 days$49.00
  2. Holafly, 30 days$73.90

For Thailand specifically, Airalo's published unlimited prices were noticeably lower than Holafly's at every trip length we looked at. Saily also offers an unlimited Thailand plan priced by duration (15 days was shown at $38.99).

Small fixed-data plans

Saily lists Thailand plans from $2.99 for 1 GB over 7 days, and $5.99 for 3 GB over 30 days. For a short trip where you mostly use Wi-Fi, that's hard to beat.

Affiliate links. Prices are set by the provider and confirmed at checkout.

Calls and texts

Most travel eSIMs are data-only. Nomad's help center notes that Thailand is one of the few destinations (with the UK and the Maldives) where some of its plans include calls and texts. Saily sells an optional US number with call and text plans. If you need a Thai number for local deliveries or bookings, a local SIM from a Thai operator is still the most direct route.

Multiple countries? Consider a regional plan

Airalo's Thailand page points to its Asia regional packages "from $4.00". Saily's "Asia and Oceania" plan starts from $4.99 and covers 22 countries. Holafly says its Southeast Asia eSIM includes both Singapore and Thailand. Before buying, confirm every country on your route is in the plan; Saily, for example, notes its Thailand plan does not cover Malaysia.

Which plan type fits your route
Your tripUsually sensible
Thailand only, up to 1 week, light useSmall fixed plan (1–3 GB)
Thailand only, heavy useUnlimited single-country plan
Thailand plus 1–2 neighborsCompare a regional plan vs. two single-country plans
Long multi-country backpackingRegional plan with top-ups

Practical notes

  • Holafly warns that coverage may be weaker in jungles, small islands and on sea crossings, naming Khao Sok National Park as an example. Download offline maps before ferry days.
  • Saily notes its plans activate automatically when you arrive, as long as the eSIM line is on and roaming is enabled.
  • Keep your home SIM installed so you can receive bank one-time codes by SMS (data roaming off on that line).

Frequently asked questions

What is the cheapest Thailand eSIM?

Of the pages we checked (4 November 2026), Saily listed the smallest plan: 1 GB for 7 days at $2.99, and 3 GB for 30 days at $5.99.

Airalo or Holafly for unlimited data in Thailand?

Airalo's published unlimited Thailand prices were lower at every trip length we checked, for example $49.00 vs $73.90 for 30 days.

Does a Thailand eSIM work in Malaysia?

Not necessarily. Saily notes its Thailand plan does not cover Malaysia. For multi-country trips, look at a regional plan and check its country list.

Sources and method

Last checked 4 November 2026

All prices and plan facts on this page were read from these official pages on 4 November 2026. We have not purchased or tested these plans ourselves; we summarize what the providers publish, in our own words. Read our method.

  1. Airalo — Thailand eSIMsChecked 4 November 2026
  2. Holafly — eSIM for ThailandChecked 4 November 2026
  3. Saily — eSIM for ThailandChecked 4 November 2026
  4. Nomad Help Center — Is Nomad eSIM legit and any good?Checked 4 November 2026