The best eSIM for a long stay in Thailand is one plan that covers the whole season instead of a new 30-day plan every month. On provider pages checked on 27 October 2026, TonMobile lists 50 GB for 90 days at $45.00 and 100 GB for 180 days at $89.00, and Holafly lists unlimited plans up to 90 days. Most other travel eSIMs stop at 30 days, so a winter in Chiang Mai means three to six separate purchases.
Key takeaways
- TonMobile lists the longest fixed-data plans for Thailand: 50 GB for 90 days and 100 GB for 180 days.
- Holafly lists unlimited plans from 1 to 90 days, with hotspot capped at 500 MB per day.
- Saily, Airalo and Nomad list Thailand plans of 30 days or less, so long stays mean repeat purchases.
- Travel eSIMs in this comparison are data-only. A Thai tourist SIM is the route to a local number.
Why buying a 30-day eSIM every month gets old
A monthly eSIM routine costs more than money for a digital nomad in Thailand. Each new plan means a new purchase, a new profile or top-up, and a short window where your data line has to be switched over. Miss the renewal date and you land in Chiang Mai or on Koh Samui with no data until you find Wi-Fi.
Data on a travel eSIM starts being consumed when the eSIM is activated on a device, according to TonMobile's terms. That rule applies to every plan, so a 30-day clock runs whether you used 2 GB or 20 GB.
Thai tourist SIM cards have the same ceiling. The AIS Traveller SIM, dtac Happy Tourist and TrueMove H Tourist packages listed by Saily's 2025 guide top out at 30 days for ฿1,199, so a season on a tourist SIM also means monthly renewals.
- Track a renewal date every 30 days
- Install or top up a new plan each month
- Lose any unused data at each expiry
Which eSIM providers list 90-day and 180-day plans for Thailand
Only two providers in our comparison list Thailand plans longer than 30 days: TonMobile and Holafly. The others top out at 30 days on the pages checked on 27 October 2026.
| Provider | Longest Thailand plan listed | Data | Listed price |
|---|---|---|---|
| TonMobile | 180 days | 100 GB | $89.00 |
| TonMobile | 90 days | 50 GB | $45.00 |
| Holafly | Up to 90 days | Unlimited, fair usage | Not listed on the page checked |
| Saily | 30 days | 20 GB or unlimited | $19.99 (20 GB) |
| Airalo | 30 days | Unlimited | $49.00 |
| Nomad | 30 days | 10 GB | $10 |
TonMobile's Thailand page shows a price per GB that falls as the plan grows, from $4.00 on the 1 GB plan to $0.89 on the 100 GB plan.
- 1 GB7 days$4.00 per GB$4.00
- 3 GB30 days$1.83 per GB$5.50
- 5 GB30 days$1.50 per GB$7.50
- 10 GB30 days$1.10 per GB$11.00
- 20 GB30 days$0.95 per GB$19.00
- 50 GB90 days$0.90 per GB$45.00
- 100 GB180 days$0.89 per GB$89.00
Holafly takes a different approach with unlimited data and plan lengths from 1 to 90 days. Holafly notes that a fair usage slowdown is possible, so unlimited means no fixed cap rather than unlimited full speed.
Cost math: monthly plans vs one long plan
One long plan beats stacking 30-day plans on price per GB, but not always on total spend. The answer depends on how much data you use each month. Every figure below comes from provider pages checked on 27 October 2026.
A 90-day stay
| Option | Arithmetic | Total data | Total cost |
|---|---|---|---|
| TonMobile 50 GB / 90 days | 1 x $45.00 | 50 GB | $45.00 |
| TonMobile 20 GB / 30 days, three times | 3 x $19.00 | 60 GB | $57.00 |
| Saily 20 GB / 30 days, three times | 3 x $19.99 | 60 GB | $59.97 |
| Nomad 10 GB / 30 days, three times | 3 x $10 | 30 GB | $30.00 |
| Airalo unlimited 30 days, three times | 3 x $49.00 | Unlimited | $147.00 |
| Holafly unlimited 30 days, three times | 3 x $74.90 | Unlimited | $224.70 |
The TonMobile 90-day plan works out to $15.00 a month ($45.00 divided by 3) for about 16.7 GB a month. Three 20 GB monthly plans give 10 GB more in total but cost $12.00 to $14.97 more. A light user who fits inside 10 GB a month spends less with three Nomad plans, at $30.00.
A 180-day stay
TonMobile's 100 GB / 180 days plan costs $89.00, or about $14.83 a month ($89.00 divided by 6). Six TonMobile 20 GB monthly plans cost $114.00 (6 x $19.00) for 120 GB, and six Saily 20 GB plans cost $119.94 (6 x $19.99).
Six Thai tourist SIMs at ฿1,199 each come to ฿7,194 (6 x ฿1,199), with a passport registration at each purchase. For a full winter, the single 180-day plan removes five renewals and still costs less than six 20 GB plans.
How to read this
If your monthly use stays under about 16 GB, the long plans fit. If you stream or upload video most days, compare unlimited options and check our guide on how much data a Thailand trip needs.
Remote work setup: hotspot and video calls
Hotspot policy matters more than headline data for a digital nomad eSIM in Thailand. A laptop on a tethered phone can burn through a day's allowance in one long call.
Unrestricted
Saily
Saily lists hotspot as unrestricted on its Thailand page. Its unlimited plans run 5 GB a day at full speed, then up to 1 Mbps.
Supported
Nomad
Nomad's FAQ says hotspot is supported. Nomad also lists True, AIS and dtac with network switching.
Capped
Holafly
Holafly lists hotspot at 500 MB per day. That cap is tight for a laptop that runs daily video calls.
Not stated
TonMobile
TonMobile does not state a hotspot policy on the pages we checked. Ask support before you rely on tethering for work.
Upload speed decides how you look on a video call. Opensignal's August 2026 report puts AIS upload at 15.0 Mbps, TrueMove H at 9.8 Mbps and dtac at 8.3 Mbps. TonMobile does not name its Thai network partner, while Ubigi lists AIS and True Move.
For an eSIM in Chiang Mai or on the islands, coverage experience counts too. Opensignal scores AIS at 8.9 out of 10 and dtac and TrueMove H at 8.6.
Pros of one long plan for remote work
- No renewal gap in the middle of a working week
- Lower price per GB on TonMobile's 50 GB and 100 GB plans
- One profile to manage in phone settings
Cons
- Hotspot policy not stated by TonMobile
- Holafly caps hotspot at 500 MB per day
- Fixed data can run out before the plan ends if usage is heavy
Adding a Thai number with a tourist SIM
Travel eSIMs in this comparison are data-only, with no Thai phone number. TonMobile and Holafly state this explicitly. If a landlord, bank or delivery app asks for a local number, a Thai tourist SIM fills that gap.
AIS, dtac and TrueMove H all sell tourist SIMs at kiosks in Thailand's international airports. A passport is required, and registration takes about 10 to 30 minutes, according to Saily's guide. Airport SIMs typically cost 20 to 30 percent more than city shops.
A common long-stay setup puts the eSIM on mobile data and keeps the tourist SIM for calls and SMS. On iPhone, pick the data line in SettingsMobile ServiceMobile Data. Our tourist SIM vs eSIM guide compares the two in more detail.
Tip
Apple notes the home line can still incur roaming charges while a travel eSIM carries data. Turn off data on lines you do not want to use.
Paying, activation and refunds
TonMobile accepts Visa, Mastercard, Apple Pay, Google Pay, Bitcoin, TON and TON via Telegram. The Thailand page lists $1.50 off the first eSIM.
Checkout
Payment method
TonMobile plans can be activated within 180 days of purchase. That window lets you buy before departure and install when you land, as covered in our guide to setting up an eSIM before Thailand.
Refund rules in TonMobile's terms
- Refunds cover an unsupported device, no network inside declared coverage, or an unresolved delivery or data fault
- Requests must come before the package expires and no later than 180 days after purchase
- Support may offer re-activation or a replacement eSIM instead
- Deleted or wrongly installed profiles are not refunded
- Card refunds take up to 14 calendar days; electronic and crypto refunds up to 5 business days
Never delete an eSIM profile to fix a connection problem on a long plan. Work through our eSIM not working in Thailand checklist first, since a deleted profile loses refund eligibility.
Verdict: which long-stay eSIM fits you
For a winter in Thailand on moderate data, one long plan is the simplest choice. TonMobile's 100 GB / 180 days at $89.00 and 50 GB / 90 days at $45.00 are the only fixed-data plans past 30 days in our comparison.
Pick a long plan if
- You stay 90 or 180 days
- You use around 16 GB a month or less
- You want one install for the season
Stack monthly plans if
- You need unrestricted hotspot every day
- You use under 10 GB a month
- Your dates may change
See how each provider scores on the eSIM rating, read how we score providers, or start with the full Thailand eSIM guide. Unfamiliar terms are explained in the glossary.
FAQ
What is the best eSIM for a long stay in Thailand?
TonMobile lists the longest fixed-data Thailand plans in our comparison: 50 GB for 90 days at $45.00 and 100 GB for 180 days at $89.00. Holafly lists unlimited plans up to 90 days for people who want no data cap.
Is there a Thailand eSIM for 90 days?
Yes. TonMobile lists a 50 GB plan valid for 90 days at $45.00, and Holafly lists unlimited plan lengths from 1 to 90 days. Saily, Airalo and Nomad list Thailand plans of 30 days or less.
Is a 100GB eSIM for Thailand cheaper than monthly plans?
TonMobile's 100 GB / 180 days plan costs $89.00, or $0.89 per GB. Six TonMobile 20 GB monthly plans cost $114.00 for 120 GB, so the long plan costs $25.00 less over six months.
Can I use a digital nomad eSIM in Thailand as a laptop hotspot?
It depends on the provider. Saily lists hotspot as unrestricted, Nomad says hotspot is supported, and Holafly caps hotspot at 500 MB per day. TonMobile does not state a hotspot policy, so check with support first.
Does a Thailand travel eSIM give me a Thai phone number?
No. The travel eSIMs in this comparison are data-only, and TonMobile and Holafly say so explicitly. A tourist SIM from AIS, dtac or TrueMove H, registered with your passport, gives you a Thai number.
Which network is best for an eSIM in Chiang Mai?
Opensignal's August 2026 report gives AIS the top coverage experience score in Thailand at 8.9 out of 10, against 8.6 for dtac and TrueMove H. City-level results for Chiang Mai are not broken out in that report.