Confirm that your phone is unlocked and eSIM-compatible, then install before the flight. Keep the travel eSIM switched off until arrival unless your provider says otherwise; activation timing differs by plan.
Thailand eSIM comparison
Compare Thailand eSIM plans for 7, 10 or 15 days.
Compare Airalo, Saily and Yesim by data allowance, trip length, payment options and practical trade-offs. Prices for Thailand are refreshed every three days and should be confirmed at checkout.
Compare 15-day pricesChecked against provider pages and published terms. Network speed was not field-tested.
BKKHKTCNX5 · 10 · 20 GB · ∞15 / 30 days · 3 providers
Automated price check: Sep 16, 2026 · 3/3 sources refreshed
Thailand eSIM prices at a glance
Choose a 15- or 30-day trip and compare the same data allowance in USD. A dash means we could not verify a matching plan, not that the provider has no other Thailand products.
Trip length
For fixed data, the table shows the shortest verified validity that covers your trip. Unlimited is shown only for the exact 15- or 30-day duration.
↔ Swipe the table sideways to compare all providers.
| Data | AAiraloRefreshed Sep 16, 2026 | SSailyRefreshed Sep 16, 2026 | YYesimRefreshed Sep 16, 2026 |
|---|---|---|---|
| 5 GB | $7.9930 days · shortest available term | $8.4030 days · shortest available term | |
| 10 GB | $10.9930 days · shortest available term | $13.2030 days · shortest available term | |
| 20 GB | $19.9930 days · shortest available term | $20.4030 days · shortest available term | |
| ∞ Unlimited | $39.0015 days | $38.9915 days |
Airalo · Saily · Yesim
Where each provider wins — and where it does not
A global eSIM marketplace with low-cost fixed-data Thailand plans and separate unlimited options.
Good for
- Fixed-data and unlimited options are easy to compare
- The Maew plan uses the True and AIS networks
- Some plans let you add more data later
Watch out for
- Most plans are for mobile data only
- If you need calls, Airalo also has a separate dtac plan with different terms
- Unlimited plans may slow down after heavy data use
Payment methods
See plan — Airalo - opens in a new tabVisa, Mastercard, American Express, UnionPay, JCB, PayPal, Airmoney; Apple Pay, Google Pay, or Alipay where available.
A travel eSIM from the team behind NordVPN, combining competitive Thailand prices with app-based security tools.
Good for
- App-based plan management with built-in security features
- Unlimited includes 5 GB of full-speed data per day, then speeds of up to 1 Mbps
- Hotspot, auto top-up, security tools, and 24/7 support
Watch out for
- Fixed-data package terms can change between checks
- Install and activate the eSIM within the period shown by Saily
Payment methods
See plan — Saily - opens in a new tabCredit or debit card, PayPal, Google Pay, and Apple Pay on supported devices.
A flexible provider with competitively priced unlimited data and optional plans that include a local number and calls.
Good for
- 15- and 30-day unlimited options are included in the live comparison
- Optional Thailand plans with a local number and calls
- Alternative payment methods and balance top-up are available
Watch out for
- Fixed-data availability and prices can change between checks
- Unlimited speeds may slow down after heavy data use
- Promotional prices can change
Payment methods
See plan — Yesim - opens in a new tabVisa, Mastercard, PayPal, Apple Pay, Google Pay, Klarna, iDEAL, Binance Pay, selected cryptocurrencies, Ycoins, and American Express; availability varies.
Independent buying guide
Travel eSIM or a Thai tourist SIM?
A travel eSIM is mainly a convenience purchase: install it before departure and connect after landing. A local tourist SIM can be attractive when you need a Thai number, local calls or a specific AIS, True or dtac promotion. Compare those two use cases before comparing prices.
Research reviewed Aug 12, 2026Choose a travel eSIM
Best when you want maps, messaging and ride apps immediately after landing without finding a counter, registering a new SIM or replacing your home line.
Check local tourist plans
AIS, True and dtac sell official tourist products that can include a local number and calls. Expect passport registration and compare the airport, online and shop offers carefully.
Prioritise the partner network
Bangkok performance does not predict every ferry route, beach or mountain road. A plan that names its Thai network gives you more useful information than a generic coverage claim.
What Airalo, Saily and Yesim actually differ on
These travel products are primarily data services. Confirm the exact local partner, voice/SMS inclusion and fair-use rule on the package you buy.
| Provider | Local network | When it starts | Hotspot | Top-up & refunds |
|---|---|---|---|---|
| AAiralo | The Maew 10 GB plan lists True and AIS. Other Thailand products, including unlimited options, can list a different combination. | The Maew package starts when it first connects to a supported Thai network, not merely when purchased. | Generally supported when the phone and local partner allow tethering; check the exact product information. | Maew is marked rechargeable. Airalo refund options are more limited after installation, activation or data use. |
| SSaily | The app selects a local partner automatically; public product pages do not guarantee one network for every traveller and plan. | Install before travel and the plan normally activates automatically after arrival in Thailand. | Saily states that its Thailand eSIM allows hotspot use, subject to the phone and network working normally. | Plan management and support run through the app. Unlimited products can reduce speed after the daily high-speed allowance. |
| YYesim | The eSIM chooses from supported Thai partner networks; the exact network can vary by package and location. | Validity begins on the first supported-network connection, with an activation deadline shown for the product. | Usually available, but Yesim says operator restrictions can make tethering unavailable in some cases. | Top-up is available. Unlimited packages remain subject to partner fair-use and possible speed management. |
Set it up before the airport queue
A little preparation is the difference between instant arrival data and troubleshooting on public Wi-Fi.
- 01
Verify eSIM and unlock status
Use the provider device checker and confirm your phone is not locked to your home carrier.
- 02
Install on stable Wi-Fi
Keep the QR code and manual details. Follow the product activation policy so the validity period does not start too early.
- 03
Protect the allowance
Disable photo backup, app updates and Wi-Fi Assist/cellular switching until you know how quickly you are using data.
- 04
Test after landing
Select the eSIM for data, enable roaming on that line, wait a few minutes and restart once before changing APN settings.
Official sources used for this guide
Product terms can change. We link to primary sources so you can verify the exact plan before paying.
How much data for 7, 10, or 15 days in Thailand?
These are planning ranges rather than exact promises. Video quality, cloud photo backup, and hotspot use can matter more than trip length.
7 days
Start with 5 GB for maps, messaging, tickets, and light browsing. Choose 10 GB for frequent social video, calls, or limited access to hotel Wi-Fi.
Disable mobile photo backup before the trip if you choose 5 GB.10 days
Ten GB is a practical middle option for most independent trips. It leaves room for navigation, translation, restaurant searches, and occasional streaming.
A 30-day package can still be the shortest fixed-data plan covering ten days.15 days
Ten GB suits regular use, 20 GB suits heavier video or hotspot use, and unlimited prioritizes convenience over the lowest price.
Unlimited plans still have fair-use and speed-management rules; read the provider terms.Official local benchmark
Travel eSIM or a Thai operator?
Local packages can cost less, but a travel eSIM buys time and predictability after a long flight. Choose between having data prepared before departure or getting a Thai number and local calls.
Airalo, Saily, or Yesim
The convenient choice when you want to select, pay for, and install your plan calmly before departure instead of sorting out connectivity after landing.
- Buy and install before the flight
- After landing, enable the eSIM and data roaming to connect without looking for an airport SIM counter
- No retail queue or passport handover to a shop assistant; most compared packages are data-only
AIS, True, or dtac
Often worth the extra setup when a lower local price, a Thai number, or local calls matter more than having everything ready before the trip.
- Thai phone number and package-specific voice benefits
- Identity registration and the operator's activation steps are required
- Airport, online, and shop prices can differ; buying after arrival may also mean a counter visit or queue
Local Thailand tourist eSIM alternatives
These offers are not part of our affiliate comparison. They are included as a reality check so you can compare convenience, a local number, and official-network pricing before buying.
AIS Lucky Tourist eSIM
- 15 days: 699 THB; 30 days: 1,199 THB
- Thai number, free calls within AIS, and a 100 THB call bonus on listed packages
Passport registration is required. Confirm the current package, activation, and fair-use terms before payment.
Official AIS plansTrue Tourist eSIM
- Unlimited True Wi-Fi
- Thai tourist number; voice allowances depend on the selected package
Online, airport, and promotional prices can differ. Check registration and package terms at checkout.
Official True plansdtac Happy Tourist eSIM
- 15 days with 30 GB at max speed: 599 THB
- Thai dtac number, dtac-network calls, and call credit on the listed packages
After the high-speed allowance, speed and fair-use conditions apply. Verify the exact package before paying.
Official dtac plansPlan by destination
One Thailand eSIM for Bangkok, Phuket, and Chiang Mai
The compared country plans are designed for use across Thailand. Coverage still depends on the local network, terrain, congestion, and your device—not only on the eSIM brand.
eSIM for Bangkok
Maps, ride-hailing, translation, mobile payments, and messaging make data useful from the airport onward. Five GB can cover a light city break; 10 GB is safer if you use social video every day.
Save your hotel address and airport transfer details offline before landing.eSIM for Phuket
A Thailand-wide plan can continue working around Phuket and on later domestic stops. Signal quality can change between busy beaches, hills, boats, and smaller islands regardless of provider.
Download ferry tickets and offline maps before island or boat trips.eSIM for Chiang Mai
The same country eSIM can be used in Chiang Mai after Bangkok or Phuket. City coverage and rural mountain coverage are different questions, so do not treat an eSIM as a guarantee on remote roads.
Keep emergency details and your accommodation address available offline.Continue planning
Compare another destination
Use the same like-for-like method for another trip.
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Open guide →Transparent methodology
How this comparison stays current
Airalo prices come from its official product feed. Saily and Yesim are checked on their official Thailand pages. The table compares only plan matches present in the latest validated snapshot. A dash means that no exact comparable plan was verified in that snapshot, not that the provider offers no other Thailand plans. A scheduled job refreshes the snapshot every three days, while the last verified value remains visible if a source is temporarily unavailable.
Affiliate links: we may earn a commission at no extra cost to you. Provider checkout is the final source for price, discounts, taxes, coverage, payment availability, activation, and fair-use rules.
Affiliate disclosure →FAQ
Thailand eSIM questions
Which Thailand eSIM is cheapest?
It depends on the allowance and trip length. Use the current comparison table above: it identifies the lowest checked price for the selected duration and data amount from the latest successful snapshot. Confirm the final price at checkout.
Will one eSIM work in Bangkok, Phuket, and Chiang Mai?
A Thailand country plan is intended to work across those destinations, but actual coverage and speed depend on local networks, terrain, congestion, and your phone.
Does unlimited really mean unlimited high-speed data?
Not necessarily. Saily states 5 GB per day without a speed restriction and then up to 1 Mbps; Yesim and Airalo also make unlimited use subject to plan or local-network fair-use rules.