Cheapest eSIM for Southeast Asia in 2026
11 countries ranked by cost-per-GB. Prices verified weekly from 5 providers.
Price Summary:
Cheapest eSIM in Southeast Asia: HelloRoam in Thailand at $0.29/GB. Region average: $1.41/GB across 11 countries. 5 countries have sub-$1/GB plans. Prices verified May 2026.
HelloRoam Southeast Asia plan — 11 countries, 30+ networks, 5G in 8
Key carriers: AIS, CelcomDigi, Singtel. From $3/day — cheaper than airport SIM cards, activates before you land.
11 countries · sorted by $/GB ascending
Every Southeast Asia destination
| Country | Provider | $/GB | From |
|---|---|---|---|
 Thailand | HelloRoam | $0.29 | $14.38 |
 Singapore | HelloRoam | $0.74 | $36.99 |
 Indonesia | HelloRoam | $0.84 | $41.99 |
 Myanmar | Holafly | $0.90 | $4.50 |
 Malaysia | HelloRoam | $0.94 | $46.99 |
 Philippines | HelloRoam | $1.35 | $27.00 |
 Vietnam | HelloRoam | $1.37 | $27.49 |
 Cambodia | HelloRoam | $1.44 | $28.80 |
 Timor-Leste | Holafly | $1.70 | $8.50 |
 Laos | HelloRoam | $2.20 | $43.99 |
 Brunei | HelloRoam | $3.75 | $75.00 |
FAQ
Southeast Asia eSIM — frequently asked
What is the cheapest per-GB rate in Southeast Asia right now?
The cheapest per-GB rate in Southeast Asia is $0.29/GB from HelloRoam in Thailand. The regional average is $1.41/GB, so picking the lowest-cost destination saves budget travelers 80% compared to paying average rates. 5 countries in Southeast Asia offer sub-$1/GB prepaid plans. Rates verified weekly.
How do prepaid eSIM costs vary across Southeast Asia?
Prepaid eSIM prices across Southeast Asia range from $0.29/GB in Thailand up to $3.75/GB in Brunei. The regional average sits at $1.41/GB. On a typical 5 GB trip, that gap translates to a $17.31 difference in total cost. Choosing the right country plan over a regional bundle often cuts the bill by 20–40%.
Which budget eSIM saves the most money in Southeast Asia?
HelloRoam offers the best budget value in Southeast Asia at $0.29/GB for Thailand. At that rate, 10 GB of prepaid data costs just $2.88 — compared to the regional average of $14.10 for the same data. Rankings update weekly from 5 providers: Airalo, Holafly, HelloRoam, Saily, and Nomad.
Is a prepaid eSIM cheaper than airport SIM cards in Southeast Asia?
Yes. Airport SIM cards in Southeast Asia typically cost $8–$25 for 3–5 GB — roughly $2–$5/GB after markup and activation fees. The cheapest prepaid eSIM in Southeast Asia is $0.29/GB from HelloRoam. On a 5 GB purchase that is a saving of $13.56 or more versus airport pricing. Prepaid eSIMs also activate instantly before you land, so you skip the queues entirely.
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