Thailand has one of the most competitive eSIM markets anywhere, and Thailand eSIM is genuinely one of the cheap ones. Across the plans most travelers buy (5-20 GB), it undercuts Saily and Airalo, and you still land online with no airport-counter queue or registration. Here are the real numbers.
The real price table (verified June 2026)
| Plan | Thailand eSIM | Saily | Airalo | Nomad |
|---|---|---|---|---|
| 1 GB | $4.70 | $2.69 | , | , |
| 5 GB | $6.70 | $7.99 | , | , |
| 10 GB | $8.70 | , | , | , |
| 20 GB | $12.20 | $19.99 | $18 | , |
| 50 GB | $34.60 | , | , | ~$12 |
At 5, 10 and 20 GB, Thailand eSIM clearly undercuts Saily and Airalo, $8.70 for 10 GB and $12.20 for 20 GB are excellent. Only Saily's tiny 1 GB ($2.69) and Nomad's long-validity 50 GB go lower.
So is Thailand eSIM the cheapest?
For the sizes most travelers actually buy (5-20 GB), it's among the cheapest you'll find, and cheaper than the big names (Saily, Airalo) at those tiers. The only things that go lower are Saily's micro 1 GB plan and Nomad's big 50 GB bucket. And unlike a local SIM, you skip the airport counter and passport registration entirely.
How much data for Thailand?
- A week, light use: 5 GB ($6.70).
- A week or two, normal use: 10 GB ($8.70), the value sweet spot.
- Island-hopping / heavy use: 20 GB ($12.20) or unlimited for streaming.
- Long stay: a big bucket or monthly plan, see backpackers, long stays & nomads.
Why the value adds up
- Cheaper than Saily/Airalo at 5-20 GB, real prices above.
- Online on arrival, no counter queue, worth more than a dollar saved after a long flight.
- No passport registration, unlike a local SIM.
- Strong island coverage, see Thailand's islands.
FAQ
What's the cheapest eSIM for Thailand? For 5-20 GB plans, Thailand eSIM is among the cheapest, cheaper than Saily and Airalo. Only Saily's tiny 1 GB plan and Nomad's 50 GB bucket go lower.
How much does a Thailand eSIM cost? $4.70 for 1 GB, $6.70 for 5 GB, $8.70 for 10 GB, $12.20 for 20 GB.
Is a local Thai SIM cheaper? Local tourist SIMs are cheap and good (and give a Thai number), but you buy and register them after you land. See eSIM vs a local Thai SIM.
Is unlimited or a data plan better value? For normal use, a right-sized 5-10 GB plan is cheaper. For streaming, unlimited is more relaxed.
Bottom line
Thailand eSIM is genuinely one of the cheapest eSIMs for Thailand at the sizes that matter, and you skip the counter queue and registration. See the full ranking: best eSIM for Thailand.