Best eSIM for Southeast Asia in 2026
Bangkok, Bali, Hanoi and a few stops in between? Find a data plan that follows your route, without buying a new SIM at every border.
Compare Saily, Airalo and Yesim regional packages.
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Start with your route
For a trip through Thailand, Vietnam, Cambodia and Laos, start by comparing Saily and Airalo. If your travels also include Australia or New Zealand, Saily is worth a closer look. Yesim is another option for its included destinations, but its South East Asia package leaves out Cambodia and Laos.
The best buy is the package that covers every stop, lasts until you fly home and gives you enough data. Use the checker below to narrow it down.
Which plans cover your trip?
Select every country where you want mobile data, including stopovers.
Choose at least one country, then show matching plans.
Saily Asia & Oceania
Airalo Asia / Asialink
Yesim South East Asia
This checks country inclusion for these three packages, not signal at a particular hotel or beach. Check the selected package’s current country list before paying. For a country not shown, use the provider’s full destination list.
Three regional eSIMs to compare
Saily
One plan for a longer route
If you want to arrange your data once and get on with the trip, Saily is a sensible starting point. Its Asia & Oceania package includes 22 countries, with Cambodia, Laos, Australia and New Zealand among them.
Fixed-data choices include 5 GB for 30 days at US$19.49, 10 GB for 30 days at US$35.99 and 25 GB for 60 days at US$48.99. Hotspot sharing is allowed; the devices sharing your connection still use your allowance. Unlimited packages are also available.
Buy Saily Asia & Oceania eSIMAiralo
An alternative for the mainland loop
Going from Thailand through Laos, Vietnam and Cambodia? Airalo’s Asia / Asialink package covers those stops, along with 14 other destinations. Compare its final price with Saily for the same trip length and data allowance, especially if you already use the Airalo app.
It offers fixed and unlimited data options. Australia and New Zealand are outside this Asia package, so add the cost of another plan if either is part of your journey.
Buy Airalo Asia eSIMYesim
Another choice for island trips and onward travel
Yesim’s South East Asia bundle covers Thailand, Vietnam, Indonesia, Malaysia, Singapore, the Philippines, Australia and New Zealand. That makes it worth comparing for a Singapore–Bali–Australia trip. It does not include Cambodia or Laos.
Choose between fixed data and unlimited packages. If you plan to work from a laptop, confirm hotspot support for your package: it depends on the operator. Unlimited plans can slow under fair-use rules, so do not buy one assuming unlimited full-speed video calls.
Buy Yesim South East Asia eSIMPrices are a snapshot, not guaranteed checkout totals. Compare offers in the same currency, including any tax or promotion, for equal data and validity.
Country coverage at a glance
| Your stops | Saily | Airalo | Yesim |
|---|---|---|---|
| Thailand, Vietnam, Indonesia, Malaysia, Singapore, Philippines | Included | Included | Included |
| Cambodia and Laos | Included | Included | Not in this package |
| Australia and New Zealand | Included | Not in this package | Included |
Only the regional packages named above are compared. Country coverage does not mean continuous reception on every road, island or ferry.
Choose around the trip you are taking
Thailand, Laos, Vietnam and Cambodia
Write down your first arrival and final departure before choosing validity. Two weeks in Thailand plus ten days in Laos and ten in Vietnam already exceeds a 30-day plan, even before Cambodia. Budget for a longer package or a top-up instead of discovering that the plan expires halfway through your route.
For slow travel, compare one regional package with separate country plans. Include the full number of days you need in each country; a cheap seven-day offer is not a substitute for a three-week stay.
Thailand, Malaysia and Singapore overland
A regional plan can save another SIM purchase when you cross the border. Keep the next accommodation address and transport booking available offline, and allow time for the phone to reconnect after entering a new country. Being on an included country list does not guarantee a connection inside a train carriage or border building.
Bali or the Philippines, then Australia
Check your onward stop as part of the original purchase. Compare the total cost of a regional plan with a country plan for each leg. If you already have data included at home in Australia, there is no need to pay twice just because a regional bundle includes it.
For a trip in one destination, use the dedicated guides: Thailand, Vietnam, Malaysia or Bali and Indonesia. For more regions, see our travel eSIM guide.
How much data should you buy?
Look at your phone’s recent usage before picking a package. Maps and messages, daily video calls and uploading a camera roll are very different budgets. Hotel Wi-Fi can handle big uploads; a phone hotspot may also trigger laptop updates and cloud backups you did not plan for.
Here are three planning examples, not measured averages, for a 21-day trip with a 20% buffer:
- 0.2 GB a day: budget about 6 GB.
- 0.5 GB a day: budget about 13 GB.
- 1.5 GB a day: budget about 38 GB.
Choose an allowance that covers your own estimate and all your travel days. For a couple, sharing one connection may save money if you stay together. Separate smaller plans are more useful if one person goes hiking while the other stays in town.
When unlimited makes sense
Compare the full-trip cost with a fixed allowance plus a possible top-up. Read how much high-speed data is available, what happens after it is used and whether hotspot is supported. An unlimited label alone does not tell you whether a plan will suit a working day on Zoom.
Set up before you leave
- Check the exact phone model and carrier lock. Use the provider’s compatibility checker before paying. Regional versions of a phone can differ.
- Install on reliable Wi-Fi. Keep the setup instructions available on another device if you need to scan a QR code.
- Check when validity starts. Saily starts in the first covered country with its eSIM and roaming enabled. If you live in an included country, switching it on at home can start the clock before departure.
- Choose the travel line for mobile data. Follow the provider’s roaming instructions. Keep home-line data roaming and automatic data switching off if you want to avoid accidental home-carrier charges.
- Test when you arrive. Turn Wi-Fi off and load a page before leaving the terminal. Test hotspot too if another traveller depends on it.
If the connection fails, check the active plan, data line, roaming and required APN settings against the installation instructions. Get help while Wi-Fi is available; deleting the eSIM should not be your first troubleshooting step.
Ready to sort your data?
Choose your countries first, then compare the final price for enough data and days. You can open the matching regional packages directly from your results.
Check my route and choose a planCommon questions
Which eSIM covers Thailand, Vietnam, Cambodia and Laos?
Saily Asia & Oceania and Airalo Asia / Asialink both list all four. Yesim’s South East Asia bundle does not include Cambodia or Laos. These are specific package lists, not a claim that the whole provider lacks service there.
Will one regional eSIM last for my whole backpacking trip?
Only if its country list, data allowance and validity all fit. Count from the first day it connects in a covered country, including a stopover or time at home if applicable. A 30-day allowance does not restart at the next border.
Can I share an eSIM with my partner?
A hotspot can share one phone’s data with another device when the package allows it. You need to stay near that phone, and both people use its allowance and battery. Separate plans make more sense if you split up during the day.
Should I buy a regional plan for a single-country holiday?
Compare it with that country’s own packages first. Paying for extra destinations is useful only if you will visit them or the regional package has a better total price for the data and days you need.
Will I get a local phone number?
The regional packages compared here are data-only. Messaging apps work over data, but ordinary local calls and SMS need a suitable separate service. Keeping a home SIM active can incur roaming charges; check your home carrier’s terms.
Sources and how we compare
Checked 16 September 2026 against the providers’ package pages and country lists. This is a comparison of published features and trip suitability; we have not measured network speeds across these routes.