Best Regional eSIM for Thailand, Singapore and Malaysia in 2026

Last updated: July 25th, 2026

Most travelers visiting all three countries only need one regional eSIM. It covers Thailand, Singapore and Malaysia without a new installation at every border.

We recommend the Travelsim Asia three-country eSIM for travelers who want fixed data. It costs $10.99 for 5 GB, $22.99 for 10 GB or $33.99 for 20 GB. Every plan lasts 30 days.

Ten gigabytes is enough for the way many people use their phone on a two to four week trip: maps, messaging, bookings, social media and some video. Pick 5 GB if you mostly need the basics. Pick 20 GB if you upload often or use your phone as a hotspot.

Heavy streamers should look at the unlimited plans from Airalo, Ubigi, Holafly and Saily. Their prices and speed limits differ quite a bit.

The plans at a glance

Travelsim Asia is the cleanest route match. Airalo, Ubigi, Holafly and Saily cover more countries, which helps if your itinerary grows beyond these three.

What the regional plans cost

We included plans that fit a trip of roughly two to four weeks. Short five-day and seven-day plans are out. Long-term plans aimed at much longer trips are out too.

Every price in the table is the provider's own US dollar price. For Airalo, Holafly and Saily, we used the currency switcher on the official product page. We did not convert euro prices.

The local networks behind each eSIM

An eSIM company buys access to mobile networks in each destination. The operator names tell you more than a vague promise of "regional coverage."

Travelsim Asia names its networks on the three-country product page. Airalo and Ubigi also publish network information for their regional plans.

Holafly only names the operators on its individual destination pages: Celcom and Digi in Malaysia, Singtel and StarHub in Singapore, and True and DTAC in Thailand.

Saily says it connects through local providers but does not name them on the pages we checked. We will not guess.

What "unlimited" means in practice

Unlimited plans normally keep working after you cross a usage threshold. Full speed is a separate question.

A fixed plan is less ambiguous. Buy 10 GB and you have 10 GB to use during the 30-day validity period.

Why we recommend the Travelsim Asia plan

It fits the route. Thailand, Singapore and Malaysia are the whole product, not three entries in a long country list.

The 30-day validity also removes a decision. You only choose the data amount: 5 GB, 10 GB or 20 GB. Travelsim Asia names its partner networks in each country, and you install one profile before moving through the region.

There is a limit. Twenty gigabytes is the largest option, so regular laptop tethering or heavy streaming may push you toward an unlimited competitor.

Cases where a competitor fits better

Airalo cost $49.00 for 15 days and $73.50 for 30 days. That was more than Ubigi but less than Holafly and Saily. Its published default gives you 3 GB at full speed every 24 hours, then 1 Mbps until the next reset.

Saily costs more but raises that daily full-speed amount to 5 GB. It is a straightforward trade: more high-speed data each day for a higher price. The product pages do not name the mobile operators.

Ubigi measures high-speed use across the whole trip. You get 30 GB on the 15-day unlimited plan or 60 GB on the 30-day plan. After that, the connection drops to 2 Mbps. That reduced speed is higher than the 1 Mbps published by Airalo and Saily.

Holafly makes sense for a trip with an exact duration such as 14 days. Its fair-use wording is less precise. The provider can reduce speed for excessive use but does not state the threshold for this Asia plan.

One regional eSIM or three country plans?

Three separate eSIMs let you assign a different amount of data to each country. They also mean three purchases, three balances and more profile switching.

This example buys 10 GB for Malaysia, 10 GB for Thailand and 5 GB for Singapore:

Ubigi had no comparable one-off 5 GB Singapore plan, so the example uses its 10 GB plan there.

The separate Travelsim Asia combination gives you 25 GB for $33.97. The regional plan gives you 20 GB for $33.99. Separate plans win on data in this specific example. The regional plan wins on setup.

Pick the data amount, then stop comparing

Five gigabytes covers maps, messaging, bookings, email and light browsing. Ten gigabytes adds room for regular social media and some video. Twenty gigabytes is safer for frequent uploads and hotspot use.

Video, cloud photo backup and automatic app updates can burn through a smaller plan. Download offline maps before you leave and pause background syncing if you want the data to last.

If you already know you will stream or tether every day, skip the fixed plans and compare the unlimited rules instead.

Our pick for a two to four week trip

Start with the 10 GB Travelsim Asia plan for $22.99. It covers the full route for 30 days without installing a new eSIM in each country.

Move down to 5 GB if your phone is mostly for maps and messages. Move up to 20 GB if you watch more video or upload often. If 20 GB turns out not to be enough, you can top up the same eSIM during your trip.

If you already know that you will use well over 20 GB, compare the unlimited plans too. Ubigi had the lowest listed US dollar price at 15 and 30 days and the highest published reduced speed. Airalo uses a daily high-speed allowance. Saily gives more full-speed data each day. Holafly lets you buy an exact number of days but publishes no numerical fair-use threshold for Asia.

Dig deeper

Travelling to just one of these countries, or want the single-country breakdown? We cover each in detail:

Sources

We checked the following provider pages on 25 July 2026:

We used provider-owned pages for prices, networks and fair-use rules. Third-party comparison sites were not used.